Im the second owner of these VTV amps, and theyve been well taken care of. They current retail for $965 each, if its not totally obvious: there are two of them. I was running them with an XLR > RCA adapter wire that worked great. I liked the dimmable power LEDs. There is not a 12v trigger on these, I was using them with a power sensing on/off power strip and it worked AOK. Super high quality, plenty of overhead, these will not color the sound, and will faithfully reproduce whatever youre throwing at them. Youll need a pre-amp or something with a volume control here. I kept the box they came in for this day when theyd get sold and moved to the next person. You can see theyll certainly arrive to you safe and sound. You pay shipping. Not sure what the heck thatll be, we can work it out when the time comes. Monoblock VTV Amplifier with Purifi 1ET400A module and VTV amplifier custom input buffer. Selected modular plug-in discrete opamps from Sparkos.USA ASSEMBLED - Prompt Support in the USA This is a brand new amplifier featuring:—Hypex SMPS1200A400 power supply—fully balanced design—EMI/RFI filtered AC inlet—MOGAMI Input wiring standard—Heavy, custom designed aluminum case with blue LED pilot. (LED may be dimmed or shut-off by switch)—Silver-coated speaker output wiring with TFE jacket—Custom input buffer offers substantial improvement over stock OEM module combined with ease changing opamps to suit listening tasteThe VTV Buffer option:SPARKOS LABS SS78 & SS79 DISCRETE VOLTAGE REGULATORS provide power to the Op Amps and amplifier module. The Sparkos Labs SS78 and SS79 Discrete Voltage Regulators bring ultra low noise and fast transient response to VTV input buffer board. Customers notice low level listening ability, far superior 3D soundstage and high frequency details. The VTV Custom buffer accepts industry leading discrete opamps from Sparkos, Sonic Imagery and Weiss—-all in stock and available at VTV. —Unit is shipped with 7db buffer gain….factory 14db gain can be set with jumper–8?W x 11?D (not including speaker posts) x 3.125?H 8.7lbs

Vintage Realistic Record Vinyl LP Cleaner Brush Great Shape + Clean-sweep purifier. GR-2

eBay Shop Bewertungsprofil Weitere Auktionen MichSeite Apollon Pure 7 Premium Multichannel 7 Channel Purifi 1ET400A 7x450Watt UVP 4986€ | VERKAUF IM KUNDENAUFTRAG Artikelnummer: 23795 EAN: nicht zutreffend Hersteller: Apollon Herstellernummer: Nicht zutreffend Marke: Apollon Produktart: Mehrkanalendstufe Modell: Pure 7 Anzahl der Kanäle: 7 Anzahl der Eingänge: 7 Anzahl der Ausgänge: 7 Beschreibung Im Auftrag unseres Kunden verkaufen wir seine Apollon Pure 7 Premium Multichannel Endstufe in von uns geprüftem technisch und optisch einwandfreiem Zustand. Konfiguration siehe weiter unten. Das Gerät funktioniert einwandfrei und klingt fantastisch. Das Gerät stammt aus einem Nichtraucherhaushalt! Zubehör: Stromkabel Das Gerät hat unser Kunde direkt bei Apollon Audio in Slowenien am 19.01.2021 gekauft. Bei Kauf legen wir die Originalrechnung mit bei. . Die Rechnung auf Ihren Namen bei diesem Artikel erfolgt unter Verwendung der Differenzbesteuerung gemäß § 25a UStG. (Die MwSt. Ist im Preis zwar entsprechend der Regelungen zur Differenzbesteuerung enthalten, ein Umsatzsteuerausweis auf der Rechnung jedoch nicht möglich.) Bei uns erhalten Sie ein 30 tägiges Rückgaberecht auch auf Produkte, die im Kundenauftrag verkauft werden. Somit können Sie sich in Ruhe ein Bild vom technischen und optischen Zustand verschaffen, ohne ein Risiko einzugehen. Achtung: Da wir im Auftrag eines Kunden verkaufen, bestehen jedoch keinerlei Gewährleistungsansprüche Dieser Artikel befindet sich in folgender Konfiguration am Lager. Hypex SMPS3000A400 (2 pcs.) Purifi 1ET400A amplifier (7 pcs.) Apollon Audio Input Buffer Board with OPA1612 op amps Apollon Control Board for standby control Neutrik silver plated XLR line input socket Gold plated RCA input with selector switch WBT 0703 CU binding posts Pure UP-OCC 12AWG Solid Copper Speaker output wire 12V Trigger for wakeup from standby High quality Furutech FI-06 mains input socket Aluminium enclosure with black anti-vibration aluminium feet LEISTUNGSSTARK UND PRÄZISE Die Apollon Audio Purifi 1ET400A Mehrkanal-Verstärker basieren auf den Purifi 1ET400A Verstärkermodulen. Sie liefern erstaunliche Details für die anspruchsvollsten Studio-, Heimkino- und audiophilen Lautsprecher mit erstaunlicher Klarheit und brutal ehrlichem linearen Klang. Sie können ihn mit 6 bis 12 Kanälen konfigurieren. Der Verstärker kann aufgerüstet werden, wenn in Zukunft mehr Kanäle benötigt werden. GERÄUMIGER, LUFTIGER KLANG, REICH AN LEBENDIGEN DETAILS MIT UNSERER SPEZIELLEN EINGANGSPUFFERKARTE Der Apollon Audio Purifi Mehrkanal-Verstärker ist außergewöhnlich schnell, ungewöhnlich sauber und äußerst musikalisch mit artikulierten, tiefen, straffen und kraftvollen Bässen. Diese außergewöhnliche Leistung ist das Ergebnis sehr hoher Strom- und Spannungsausgangsfähigkeiten, die Stabilität bei niedrigen Impedanzen mit einem Spitzenausgangsstrom von 25A bieten. Leistung: 450Watt an 2Ohm 425Watt an 4Ohm 227Watt an 8Ohm Specs: Frequency Response: 0 – 50k Hz +0/-3dB Low Distortion: THD+N – – 0.00017 % 20Hz-20kHz High Input Impedance 100K Signal to noise ratio: 131dB Eingangsempfindlichkeit einstellbar: 12,8/20,5/27,5/29 dB Ultra High Damping Factor High Current Output Max 25A Power rating: 450W @ 2ohm | 425W @ 4ohm | 227W @ 8ohm Case Dimensions: 375mm depth x 200mm height (with feet) x 450 mm width Weight: 23 kg dd-20230823-ske-1 Kategorien AIV SONDERPOSTEN % Aktiv-Subwoofer Autoradios Autoradios Doppel DIN Autoradios mit Navigation Beamer / Projektoren Blu-Ray Player CD Player CD/MP3-Wechsler Centerlautsprecher DVB-T CarHifi DVD-Player und Recorder Einzelstücke Endstufen Kabel Kassettendecks Lautsprecher CarHifi Mini/-Micro Anlagen Mobile Navigation Moniceiver Moniceiver Doppel-DIN Monitore CarHifi Navigationsrechner PA-Beschallung Plasma & LCD TV Receiver HomeHifi Regallautsprecher Restposten SACD Player Sat Receiver Sonstige Standlautsprecher Subwoofer CarHifi Surroundanlagen Surround-Receiver Tuner (Radioteil) Verstärker CarHifi Vollverstärker Vorstufen Zubehör CarHifi Powered by MD Sound GmbH & Co. KG

NAD C 298 STEREO-ENDSTUFEHybridDigital Purifi Eigentakt VerstärkerIn der fast 50-ja?hrigen Firmengeschichte debu?tierten bei NAD bereits zahlreiche innovative Versta?rkertechnologien – angefangen beim Klassiker 3020 mit seiner enormen Stromlieferfa?higkeit bis hin zum Class D-Flaggschiff M2. Im August 2020 erschien mit dem NAD M33 ein brandneuer High End-Streaming-Vollversta?rker, der weltweit erstmals mit der innovativen neuen Purifi Eigentakt-Technologie arbeitet und prompt bereits mit dem mit dem EISA-Award als bester „smarter Versta?rker 2020/21“ ausgezeichnet wurde.Mit der neuen Stereo-Endstufe C 298 mo?chte NAD die einzigartige Purifi Eigentakt -Versta?rkertechnologie nun einem breiteren Publikum zuga?nglich machen. Sie ist der perfekte Kompagnon fu?r den BluOS-Streaming- Vorversta?rker C 658 und u?berzeugt mit einer enormen Leistungsfa?higkeit.Purifi ist ein da?nisches Technologieunternehmen, bei dem einige fu?hrende Entwickler der HiFi-Branche das Ziel verfolgen, die letzten noch bestehenden Schwa?chen in der digitalen Versta?rkertechnik zu identifizieren und zu eliminieren. Der aktuelle Stand ihrer Arbeit mu?ndete im Purifi Eigentakt-Versta?rker, den NAD als erstes Unternehmen in Lizenz herstellt und bislang exklusiv im BluOS-Streaming-Versta?rker M33 einsetzte.Die Purifi Eigentakt Technologie u?berzeugt messtechnisch mit extrem geringen Intermodulationsverzerrungen, einem u?ber den gesamten Frequenzgang und die komplette Leistungsbandbreite besonders niedrigen Klirrfaktor von nur 0,005 % sowie einem minimalen Eigenrauschen.Wegweisend fu?r die Entwicklung der Eigentakt Technologie war die Erkenntnis, dass in den Komponenten im Ausgangsfilter des Versta?rkers ein Memory-Effekt auftritt. Dieses Hysterese genannte Pha?nomen fu?hrt offensichtlich zu den bekannten klanglichen Einbußen konventioneller Digitalversta?rker. Durch eine Modifikation der Ausgangsstufe und die cleveren Algorithmen der Eigentakt-Technologie gelang es Purifi, die Hysterese-Effekte erheblich zu reduzieren. Ein weiterer Vorteil der Eigentakt Endstufen ist, dass sie absolut unempfindlich auf wechselnde Lautsprecherlasten reagieren. Ihre extrem niedrige Ausgangsimpedanz fu?hrt zudem zu einem sehr hohen Da?mpfungsfaktor, was sich in einer absolut sauberen und kontrollierten Basswiedergabe a?ußert.Enorme LeistungsreservenStatt altmodischer linearer Netzteile und Class-AB-Versta?rker, die fast die Ha?lfte der beno?tigten Energie in Wa?rme statt Leistung umwandeln, setzt NAD bei seinen aktuellen Versta?rkern nur noch auf Schaltnetzteile und Class-D-Endstufen. Diese Bauart arbeitet u?ber eine große Bandbreite sehr linear und bietet eine gleichma?ßige Leistung an alle Lautsprecherlasten, was einen dramatischen Fortschritt gegenu?ber fru?heren Techniken darstellt.Das groß dimensionierte Netzteil der C 298 ermo?glicht den Endstufen eine enorme Dauerleistung von 2 x 340 Watt (an 4 ?) und bis zu 2 x 570 Watt Impulsleistung (an 2 ?). Die innovative asymmetrische Power-Drive-Technologie nutzt jedes einzelne verfu?gbare Watt fu?r die Bereitstellung enormer Dynamikreserven, um die Musik ohne Verzerrungen oder Kompressionen pra?zise wiederzugeben. Außerdem u?berzeugt das hocheffiziente Netzteil u?ber seinen gesamten Arbeitsbereich eine nahezu perfekte Spannungsregelung und sorgt so fu?r eine solide, rauschfreie Stromversorgung der Versta?rkerstufen.HAUPTMERKMALE• HybridDigital Purifi Eigentakt Versta?rker• Dauerausgangsleistung: 2 x 185 W an 8 ?, 2 x 340 W an 4 ?• Impulsleistung: 2 x 260 W / 2 x 490 W / 2 x 570 W (an 8/4/2 ?)• Impulsleistung in Bru?ckenschaltung: 1.000 W an 8 ?, 1.100 W an 4 ?• symmetrische XLR-Einga?nge• vergoldete Cinch-Einga?nge• einstellbarer Eingangspegel• Hochpegelausgang zum Durchschleifen des Audiosignals an weitere Endstufen• Ein- und Ausga?nge fu?r 12 V-Trigger-Signale• justierbare Empfindlichkeit fu?r automatische Einschaltung• Ein- und Ausga?nge fu?r IR• Erdungsklemme• Separates Netzkabel

Up for sale is one pair of Purifi Audio PTT6.5 W04-01A 6.5 mid-woofers. The drivers have been mounted and tested, but never used in a finished speaker. They were purchased for a project which was never completed. They are 100% authentic and include the original boxes as shown in photos. If you have questions about this item, please feel free to contact me. Please note:No zero feedback buyers / biddersItem will be shipped signature required to a PayPal verified addressItem will ship via UPS only and in the event that you are outside the USA, the full sale value of the purchase price will be used for customs & insurance purposes.

Purifi Audio 1ET400A power amplifer. Power supply micro audio SMPS1K-PFCR3. Mint condition and full working order.

Purifi EIGENTAKT 1ET400A dual mono stereo amplifier using 2 x power supply.Special edition case.Made by Nord AcousticsShipping only EU.Paypal only. New price in september 2023: EUR 2.150 EUR with the same specifications/components. See the Nord Acoustics webpage.

Anschlussboard Hypex / Purifi Freier Anschluss für ihr Modul 1 Stück PCB Leiterplatte Anschluss Entwicklerboard für Hypex (NC NCX500) oder Purifi (1ET400A) 30x60mm Fertig wie auf dem Bild incl. Kondensatoren und den abgebildeten Anschlüssen /Verbindern der 1 Ohm Rückführwiderstand ist integriert, kann bei Bedarf durch trennen eines Leiterzugs nach Außen verlängert werden. Die Bezeichnungen folgen dem Datenblatt So können sie ihr eigenes Konzept verwirklichen In weiteren Auktionen noch mehr – sparen sie Porto! Der Verkauf erfolgt unter Ausschluss jeglicher Sachmangelhaftung. Die Haftung auf Schadenersatz wegen Verletzungen von Gesundheit, Körper oder Leben und grob fahrlässiger und/oder vorsätzlicher Verletzungen meiner Pflichten als Verkäufer bleibt davon unberührt. Es besteht kein Rückgaberecht. Versandkosten und Transportrisiko gehen zu Lasten des Käufers. Es gilt für diese Auktion § 447 Gefahrübergang beim Versendungskauf # Versendet der Verkäufer auf Verlangen des Käufers die verkaufte Sache nach einem anderen Ort als dem Erfüllungsort (mein Wohnsitz), so geht die Gefahr auf den Käufer über, sobald der Verkäufer die Sache dem Spediteur, dem Frachtführer oder der sonst zur Ausführung der Versendung bestimmten Person oder Anstalt ausgeliefert hat. Angaben zur Ware erfolgen so gut als nur möglich. Irrtümer vorbehalten. Keine DHL- Paketstationen und/oder Postfächer ! Paketversand auf Inseln bitte gesondert Anfragen. Gebühren, Steuern und Zölle für den Warenimport sind nicht im Artikelpreis oder den Versandkosten enthalten. Diese Kosten sind vom Käufer zu tragen / Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyers responsibility. Bitte erkundigen Sie sich vor dem Bieten und Kaufen bei Ihrer zuständigen Zollbehörde, welche zusätzlichen Gebühren anfallen können / Please check with your countrys customs office to determine what these additional costs will be prior to bidding/buying.

PURIFI 1ET400A Class D Amp 1 Stück Purifi 1ET400A Purifi Neu, unbenutzt In weiteren Auktionen noch mehr – sparen sie Porto! Der Verkauf erfolgt unter Ausschluss jeglicher Sachmangelhaftung. Die Haftung auf Schadenersatz wegen Verletzungen von Gesundheit, Körper oder Leben und grob fahrlässiger und/oder vorsätzlicher Verletzungen meiner Pflichten als Verkäufer bleibt davon unberührt. Es besteht kein Rückgaberecht. Versandkosten und Transportrisiko gehen zu Lasten des Käufers. Es gilt für diese Auktion § 447 Gefahrübergang beim Versendungskauf # Versendet der Verkäufer auf Verlangen des Käufers die verkaufte Sache nach einem anderen Ort als dem Erfüllungsort (mein Wohnsitz), so geht die Gefahr auf den Käufer über, sobald der Verkäufer die Sache dem Spediteur, dem Frachtführer oder der sonst zur Ausführung der Versendung bestimmten Person oder Anstalt ausgeliefert hat. Angaben zur Ware erfolgen so gut als nur möglich. Irrtümer vorbehalten. Keine DHL- Paketstationen und/oder Postfächer ! Paketversand auf Inseln bitte gesondert Anfragen. Gebühren, Steuern und Zölle für den Warenimport sind nicht im Artikelpreis oder den Versandkosten enthalten. Diese Kosten sind vom Käufer zu tragen / Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyers responsibility. Bitte erkundigen Sie sich vor dem Bieten und Kaufen bei Ihrer zuständigen Zollbehörde, welche zusätzlichen Gebühren anfallen können / Please check with your countrys customs office to determine what these additional costs will be prior to bidding/buying.

I am selling my 2 March P451 amplifiers. They are in perfect visual and working condition. I am parting ways with them as I have reconfigured my home theater system. As a serial owner of Class-D amplifiers (Bel Canto, Audiophonics), they are right up there at the top. Very fast, extremely clean, dead quiet. March has taken the baseline Purifi 1ET400A and added their own input and power supply. Efficient enough (.2w standby) that you can leave them on all the time or use the 12v trigger. Very small and compact, plus extremely cool running, so they easily fit in even tight fitting stero racks yet look good enough to be freestanding. I have all original March packaging included. Details and description from the manufacturer:The P451 (model now known as P421)is a Purifi based monoblock power amplifier. This simply elegant product is milled from solid aluminum with a tough anodized treatment. Exceptional fit, finish and build quality. The differential (balanced) input buffer has been designed to extract the maximum performance from the Purifi module, minimize noise and eliminate ground loops. Featuring Neutrik XLR input connectors, 4 layer circuit board, OPA1612 op amps and very low noise LT3045/94 voltage regulators. The ETI Research Kryo speaker posts are manufactured from Tellurium Copper with Silver plating for superior conductivity and long lasting durability. The monoblock design has the advantage of eliminating all forms of crosstalk. The P421 features a lower noise input buffer compared to the stereo version. The new main power supply is custom designed and a significant improvement over the Hypex unit seen elsewhere. It is significantly oversized, has very low noise with high current output and excellent voltage regulation. Efficiency is improved with power factor correction. ?Power Output2 Ohms – 580 W rms?4 Ohms – 425 W rms8 Ohms – 227 W rmsCurrent Output – 25 AmpsTHD + N – 0.00018% / -115dB @ 100 Watts, 4 Ohms, 20Hz-20kHzOutput Noise – 16uVSignal To Noise Ratio – 129 dB(A)

Passive Radiator Passiv Membran, Papier Fiber Mix

2 x Purifi 1et400a Amplifier with VTV Sparkos 2590 Op Amp Pro Buffers. Bought for an amplifier project I never had the time to finish. Only needs a case and power supply to finish.

Boxem Purifi Amplifier. 2x Purifi Eigentakt Amps 2 channels power amplifier Ultra Clean Opamp OPA1656 Buffer Audio sense: automatic on/off switching 3 Gain Settings by switch on rear Purifi Eigentakt technology RRP 1750 + delivery (plus waiting list) Super low power consumption The best performance to price ratio power amp available today. Outperforms units costing thousands more. Unbelievable measurements. Pure, clean power. Mint condition. Only 8 months old. Original box and packaging. Handled once (to place on shelf) Stunning sound quality. Tons of power. Incredible control. Universally glowing reviews. Exceptional measurements. Black/gunmetal case. The very highest build quality Ive ever seen. Sale due to switching to active monitors. See Audio Science Review here: https://www.audiosciencereview.com/forum/index.php?threads/boxem-arthur-4222-e1-amplifier-review.37930/ Google Purifi Eigentakt for various reviews of the Purifi board. Purifi Eigentakt technology For Arthur 4215/E2 we have chosen to implement the Purifi Eigentakt technology. Purifi is the first company to have managed to build a mathematically exact model for self-oscillating amplifiers. This innovation enables a complete optimization of the amplification circuits improving the performance by an order of magnitude over existing implementations. In more musical terms: - Highly resolved and stable stereo image across the whole spectrum, even during very complex and busy passages thanks to the negligible inter-modulation distortion (IMD). - A total lack of sonic signature, and an ability to reproduce any type of music without preference for genre or production style due to the extremely low THD at any frequency and any power level. - Difficult loudspeakers are handled with ease, including those that challenge most other amplifiers because of the load-invariant frequency response and negligible output impedance. - The smallest amount of audible artifacts when pushed into clipping or overload is guaranteed by an exceptionally clean clipping and clipping-recovery in both voltage and current domains. In Arthur 4215/E2, the amplification stage can deliver up to 210 W in 8 and 450 W in 2 Input buffer with boXem sauce Arthur 4215/E2 input buffer board was designed in-house. The challenge has been to fit in a relatively limited space the buffer circuits for two channels, the gain management switch, the audio sense circuit, the I2C bus communication with the amplifiers and finally the supplies for analog and digital circuits, all this while obtaining the performance at the same level as the amplification modules. OPA1656 op-amps were chosen because of their immaculate performance and the extremely low DC offset allowed by their architecture. Three levels gain setting A switch on the rear of the amplifier allows you to set three different levels of gain. Depending on the output capability of your source (pre-amplifier or DAC with volume control) the system gain structure can be optimized for two main targets. The first is to have the lowest noise, the second the smoothest volume setting as possible. High gain is optimized for sources outputting 2V, medium for 4V, low for gear able to provide 10 V. While the noise levels of modern audio gear has become so low that noise optimization for home audio is often purely academic, having a smooth volume control is something we find so enjoyable that it was our main motivation for integrating the gain control switch. Beautiful chassis, attractive finish The full aluminum custom chassis is not only nice looking, it dissipates the heat of the amplification module. No screws are visible from front, top and sides. The front plate is machined in an aluminum block and spray painted with different colors that can be chosen while ordering. The top and sides cover is a single piece finished with a special paint, with a mate, suede-like texture providing avery qualitative look and feel. Listen to the music, forget the electronics Plug your audio source (with volume control), your speakers, the mains cable, switch on the mains, and forget your amplifier. The automatic on/off function detects the presence of sound at the input and automatically powers on the amplifier. After 10 minutes without sound at the input, the amplifier sets itself in standby, allowing an ultra low power consumption when not in use. Fully protected A full set of fault diagnostics allows to protect the amplifier and your speakers against abnormalities. Designed and proudly built in Luxembourg Arthur 4215/E2 was designed and is assembled at Schifflange, Luxembourg, at the heart of Europe.

Boxem Purifi Amplifier. 2x Purifi Eigentakt Amps 2 channels power amplifier Ultra Clean Opamp OPA1656 Buffer Audio sense: automatic on/off switching 3 Gain Settings by switch on rear Purifi Eigentakt technology RRP 1750 + delivery (plus waiting list) Super low power consumption The best performance to price ratio power amp available today. Outperforms units costing thousands more. Unbelievable measurements. Pure, clean power. Mint condition. Only 8 months old. Original box and packaging. Handled once (to place on shelf) Stunning sound quality. Tons of power. Incredible control. Universally glowing reviews. Exceptional measurements. Black/gunmetal case. The very highest build quality Ive ever seen. Sale due to switching to active monitors. See Audio Science Review here: https://www.audiosciencereview.com/forum/index.php?threads/boxem-arthur-4222-e1-amplifier-review.37930/ Google Purifi Eigentakt for various reviews of the Purifi board. Purifi Eigentakt technology For Arthur 4215/E2 we have chosen to implement the Purifi Eigentakt technology. Purifi is the first company to have managed to build a mathematically exact model for self-oscillating amplifiers. This innovation enables a complete optimization of the amplification circuits improving the performance by an order of magnitude over existing implementations. In more musical terms: - Highly resolved and stable stereo image across the whole spectrum, even during very complex and busy passages thanks to the negligible inter-modulation distortion (IMD). - A total lack of sonic signature, and an ability to reproduce any type of music without preference for genre or production style due to the extremely low THD at any frequency and any power level. - Difficult loudspeakers are handled with ease, including those that challenge most other amplifiers because of the load-invariant frequency response and negligible output impedance. - The smallest amount of audible artifacts when pushed into clipping or overload is guaranteed by an exceptionally clean clipping and clipping-recovery in both voltage and current domains. In Arthur 4215/E2, the amplification stage can deliver up to 210 W in 8 and 450 W in 2 Input buffer with boXem sauce Arthur 4215/E2 input buffer board was designed in-house. The challenge has been to fit in a relatively limited space the buffer circuits for two channels, the gain management switch, the audio sense circuit, the I2C bus communication with the amplifiers and finally the supplies for analog and digital circuits, all this while obtaining the performance at the same level as the amplification modules. OPA1656 op-amps were chosen because of their immaculate performance and the extremely low DC offset allowed by their architecture. Three levels gain setting A switch on the rear of the amplifier allows you to set three different levels of gain. Depending on the output capability of your source (pre-amplifier or DAC with volume control) the system gain structure can be optimized for two main targets. The first is to have the lowest noise, the second the smoothest volume setting as possible. High gain is optimized for sources outputting 2V, medium for 4V, low for gear able to provide 10 V. While the noise levels of modern audio gear has become so low that noise optimization for home audio is often purely academic, having a smooth volume control is something we find so enjoyable that it was our main motivation for integrating the gain control switch. Beautiful chassis, attractive finish The full aluminum custom chassis is not only nice looking, it dissipates the heat of the amplification module. No screws are visible from front, top and sides. The front plate is machined in an aluminum block and spray painted with different colors that can be chosen while ordering. The top and sides cover is a single piece finished with a special paint, with a mate, suede-like texture providing avery qualitative look and feel. Listen to the music, forget the electronics Plug your audio source (with volume control), your speakers, the mains cable, switch on the mains, and forget your amplifier. The automatic on/off function detects the presence of sound at the input and automatically powers on the amplifier. After 10 minutes without sound at the input, the amplifier sets itself in standby, allowing an ultra low power consumption when not in use. Fully protected A full set of fault diagnostics allows to protect the amplifier and your speakers against abnormalities. Designed and proudly built in Luxembourg Arthur 4215/E2 was designed and is assembled at Schifflange, Luxembourg, at the heart of Europe.

Boxem Purifi Amplifier. 2x Purifi Eigentakt Amps 2 channels power amplifier Ultra Clean Opamp OPA1656 Buffer Audio sense: automatic on/off switching 3 Gain Settings by switch on rear Purifi Eigentakt technology RRP 1750 + delivery (plus waiting list) Super low power consumption The best performance to price ratio power amp available today. Outperforms units costing thousands more. Unbelievable measurements. Pure, clean power. Mint condition. Only 8 months old. Original box and packaging. Handled once (to place on shelf) Stunning sound quality. Tons of power. Incredible control. Universally glowing reviews. Exceptional measurements. Black/gunmetal case. The very highest build quality Ive ever seen. Sale due to switching to active monitors. See Audio Science Review here: https://www.audiosciencereview.com/forum/index.php?threads/boxem-arthur-4222-e1-amplifier-review.37930/ Google Purifi Eigentakt for various reviews of the Purifi board. Purifi Eigentakt technology For Arthur 4215/E2 we have chosen to implement the Purifi Eigentakt technology. Purifi is the first company to have managed to build a mathematically exact model for self-oscillating amplifiers. This innovation enables a complete optimization of the amplification circuits improving the performance by an order of magnitude over existing implementations. In more musical terms: - Highly resolved and stable stereo image across the whole spectrum, even during very complex and busy passages thanks to the negligible inter-modulation distortion (IMD). - A total lack of sonic signature, and an ability to reproduce any type of music without preference for genre or production style due to the extremely low THD at any frequency and any power level. - Difficult loudspeakers are handled with ease, including those that challenge most other amplifiers because of the load-invariant frequency response and negligible output impedance. - The smallest amount of audible artifacts when pushed into clipping or overload is guaranteed by an exceptionally clean clipping and clipping-recovery in both voltage and current domains. In Arthur 4215/E2, the amplification stage can deliver up to 210 W in 8 and 450 W in 2 Input buffer with boXem sauce Arthur 4215/E2 input buffer board was designed in-house. The challenge has been to fit in a relatively limited space the buffer circuits for two channels, the gain management switch, the audio sense circuit, the I2C bus communication with the amplifiers and finally the supplies for analog and digital circuits, all this while obtaining the performance at the same level as the amplification modules. OPA1656 op-amps were chosen because of their immaculate performance and the extremely low DC offset allowed by their architecture. Three levels gain setting A switch on the rear of the amplifier allows you to set three different levels of gain. Depending on the output capability of your source (pre-amplifier or DAC with volume control) the system gain structure can be optimized for two main targets. The first is to have the lowest noise, the second the smoothest volume setting as possible. High gain is optimized for sources outputting 2V, medium for 4V, low for gear able to provide 10 V. While the noise levels of modern audio gear has become so low that noise optimization for home audio is often purely academic, having a smooth volume control is something we find so enjoyable that it was our main motivation for integrating the gain control switch. Beautiful chassis, attractive finish The full aluminum custom chassis is not only nice looking, it dissipates the heat of the amplification module. No screws are visible from front, top and sides. The front plate is machined in an aluminum block and spray painted with different colors that can be chosen while ordering. The top and sides cover is a single piece finished with a special paint, with a mate, suede-like texture providing avery qualitative look and feel. Listen to the music, forget the electronics Plug your audio source (with volume control), your speakers, the mains cable, switch on the mains, and forget your amplifier. The automatic on/off function detects the presence of sound at the input and automatically powers on the amplifier. After 10 minutes without sound at the input, the amplifier sets itself in standby, allowing an ultra low power consumption when not in use. Fully protected A full set of fault diagnostics allows to protect the amplifier and your speakers against abnormalities. Designed and proudly built in Luxembourg Arthur 4215/E2 was designed and is assembled at Schifflange, Luxembourg, at the heart of Europe.

Boxem Purifi Amplifier. 2x Purifi Eigentakt Amps 2 channels power amplifier Ultra Clean Opamp OPA1656 Buffer Audio sense: automatic on/off switching 3 Gain Settings by switch on rear Purifi Eigentakt technology RRP 1750 + delivery (plus waiting list) Super low power consumption The best performance to price ratio power amp available today. Outperforms units costing thousands more. Unbelievable measurements. Pure, clean power. Mint condition. Only 8 months old. Original box and packaging. Handled once (to place on shelf) Stunning sound quality. Tons of power. Incredible control. Universally glowing reviews. Exceptional measurements. Black/gunmetal case. The very highest build quality Ive ever seen. Sale due to switching to active monitors. See Audio Science Review here: https://www.audiosciencereview.com/forum/index.php?threads/boxem-arthur-4222-e1-amplifier-review.37930/ Google Purifi Eigentakt for various reviews of the Purifi board. Purifi Eigentakt technology For Arthur 4215/E2 we have chosen to implement the Purifi Eigentakt technology. Purifi is the first company to have managed to build a mathematically exact model for self-oscillating amplifiers. This innovation enables a complete optimization of the amplification circuits improving the performance by an order of magnitude over existing implementations. In more musical terms: - Highly resolved and stable stereo image across the whole spectrum, even during very complex and busy passages thanks to the negligible inter-modulation distortion (IMD). - A total lack of sonic signature, and an ability to reproduce any type of music without preference for genre or production style due to the extremely low THD at any frequency and any power level. - Difficult loudspeakers are handled with ease, including those that challenge most other amplifiers because of the load-invariant frequency response and negligible output impedance. - The smallest amount of audible artifacts when pushed into clipping or overload is guaranteed by an exceptionally clean clipping and clipping-recovery in both voltage and current domains. In Arthur 4215/E2, the amplification stage can deliver up to 210 W in 8 and 450 W in 2 Input buffer with boXem sauce Arthur 4215/E2 input buffer board was designed in-house. The challenge has been to fit in a relatively limited space the buffer circuits for two channels, the gain management switch, the audio sense circuit, the I2C bus communication with the amplifiers and finally the supplies for analog and digital circuits, all this while obtaining the performance at the same level as the amplification modules. OPA1656 op-amps were chosen because of their immaculate performance and the extremely low DC offset allowed by their architecture. Three levels gain setting A switch on the rear of the amplifier allows you to set three different levels of gain. Depending on the output capability of your source (pre-amplifier or DAC with volume control) the system gain structure can be optimized for two main targets. The first is to have the lowest noise, the second the smoothest volume setting as possible. High gain is optimized for sources outputting 2V, medium for 4V, low for gear able to provide 10 V. While the noise levels of modern audio gear has become so low that noise optimization for home audio is often purely academic, having a smooth volume control is something we find so enjoyable that it was our main motivation for integrating the gain control switch. Beautiful chassis, attractive finish The full aluminum custom chassis is not only nice looking, it dissipates the heat of the amplification module. No screws are visible from front, top and sides. The front plate is machined in an aluminum block and spray painted with different colors that can be chosen while ordering. The top and sides cover is a single piece finished with a special paint, with a mate, suede-like texture providing avery qualitative look and feel. Listen to the music, forget the electronics Plug your audio source (with volume control), your speakers, the mains cable, switch on the mains, and forget your amplifier. The automatic on/off function detects the presence of sound at the input and automatically powers on the amplifier. After 10 minutes without sound at the input, the amplifier sets itself in standby, allowing an ultra low power consumption when not in use. Fully protected A full set of fault diagnostics allows to protect the amplifier and your speakers against abnormalities. Designed and proudly built in Luxembourg Arthur 4215/E2 was designed and is assembled at Schifflange, Luxembourg, at the heart of Europe.

Boxem Purifi Amplifier. 2x Purifi Eigentakt Amps 2 channels power amplifier Ultra Clean Opamp OPA1656 Buffer Audio sense: automatic on/off switching 3 Gain Settings by switch on rear Purifi Eigentakt technology RRP 1750 + delivery (plus waiting list) Super low power consumption The best performance to price ratio power amp available today. Outperforms units costing thousands more. Unbelievable measurements. Pure, clean power. Mint condition. Only 8 months old. Original box and packaging. Handled once (to place on shelf) Stunning sound quality. Tons of power. Incredible control. Universally glowing reviews. Exceptional measurements. Black/gunmetal case. The very highest build quality Ive ever seen. Sale due to switching to active monitors. See Audio Science Review here: https://www.audiosciencereview.com/forum/index.php?threads/boxem-arthur-4222-e1-amplifier-review.37930/ Google Purifi Eigentakt for various reviews of the Purifi board. Purifi Eigentakt technology For Arthur 4215/E2 we have chosen to implement the Purifi Eigentakt technology. Purifi is the first company to have managed to build a mathematically exact model for self-oscillating amplifiers. This innovation enables a complete optimization of the amplification circuits improving the performance by an order of magnitude over existing implementations. In more musical terms: - Highly resolved and stable stereo image across the whole spectrum, even during very complex and busy passages thanks to the negligible inter-modulation distortion (IMD). - A total lack of sonic signature, and an ability to reproduce any type of music without preference for genre or production style due to the extremely low THD at any frequency and any power level. - Difficult loudspeakers are handled with ease, including those that challenge most other amplifiers because of the load-invariant frequency response and negligible output impedance. - The smallest amount of audible artifacts when pushed into clipping or overload is guaranteed by an exceptionally clean clipping and clipping-recovery in both voltage and current domains. In Arthur 4215/E2, the amplification stage can deliver up to 210 W in 8 and 450 W in 2 Input buffer with boXem sauce Arthur 4215/E2 input buffer board was designed in-house. The challenge has been to fit in a relatively limited space the buffer circuits for two channels, the gain management switch, the audio sense circuit, the I2C bus communication with the amplifiers and finally the supplies for analog and digital circuits, all this while obtaining the performance at the same level as the amplification modules. OPA1656 op-amps were chosen because of their immaculate performance and the extremely low DC offset allowed by their architecture. Three levels gain setting A switch on the rear of the amplifier allows you to set three different levels of gain. Depending on the output capability of your source (pre-amplifier or DAC with volume control) the system gain structure can be optimized for two main targets. The first is to have the lowest noise, the second the smoothest volume setting as possible. High gain is optimized for sources outputting 2V, medium for 4V, low for gear able to provide 10 V. While the noise levels of modern audio gear has become so low that noise optimization for home audio is often purely academic, having a smooth volume control is something we find so enjoyable that it was our main motivation for integrating the gain control switch. Beautiful chassis, attractive finish The full aluminum custom chassis is not only nice looking, it dissipates the heat of the amplification module. No screws are visible from front, top and sides. The front plate is machined in an aluminum block and spray painted with different colors that can be chosen while ordering. The top and sides cover is a single piece finished with a special paint, with a mate, suede-like texture providing avery qualitative look and feel. Listen to the music, forget the electronics Plug your audio source (with volume control), your speakers, the mains cable, switch on the mains, and forget your amplifier. The automatic on/off function detects the presence of sound at the input and automatically powers on the amplifier. After 10 minutes without sound at the input, the amplifier sets itself in standby, allowing an ultra low power consumption when not in use. Fully protected A full set of fault diagnostics allows to protect the amplifier and your speakers against abnormalities. Designed and proudly built in Luxembourg Arthur 4215/E2 was designed and is assembled at Schifflange, Luxembourg, at the heart of Europe.

Boxem Purifi Amplifier. 2x Purifi Eigentakt Amps 2 channels power amplifier Ultra Clean Opamp OPA1656 Buffer Audio sense: automatic on/off switching 3 Gain Settings by switch on rear Purifi Eigentakt technology RRP 1750 + delivery (plus waiting list) Super low power consumption The best performance to price ratio power amp available today. Outperforms units costing thousands more. Unbelievable measurements. Pure, clean power. Mint condition. Only 8 months old. Original box and packaging. Handled once (to place on shelf) Stunning sound quality. Tons of power. Incredible control. Universally glowing reviews. Exceptional measurements. Black/gunmetal case. The very highest build quality Ive ever seen. Sale due to switching to active monitors. See Audio Science Review here: https://www.audiosciencereview.com/forum/index.php?threads/boxem-arthur-4222-e1-amplifier-review.37930/ Google Purifi Eigentakt for various reviews of the Purifi board. Purifi Eigentakt technology For Arthur 4215/E2 we have chosen to implement the Purifi Eigentakt technology. Purifi is the first company to have managed to build a mathematically exact model for self-oscillating amplifiers. This innovation enables a complete optimization of the amplification circuits improving the performance by an order of magnitude over existing implementations. In more musical terms: - Highly resolved and stable stereo image across the whole spectrum, even during very complex and busy passages thanks to the negligible inter-modulation distortion (IMD). - A total lack of sonic signature, and an ability to reproduce any type of music without preference for genre or production style due to the extremely low THD at any frequency and any power level. - Difficult loudspeakers are handled with ease, including those that challenge most other amplifiers because of the load-invariant frequency response and negligible output impedance. - The smallest amount of audible artifacts when pushed into clipping or overload is guaranteed by an exceptionally clean clipping and clipping-recovery in both voltage and current domains. In Arthur 4215/E2, the amplification stage can deliver up to 210 W in 8 and 450 W in 2 Input buffer with boXem sauce Arthur 4215/E2 input buffer board was designed in-house. The challenge has been to fit in a relatively limited space the buffer circuits for two channels, the gain management switch, the audio sense circuit, the I2C bus communication with the amplifiers and finally the supplies for analog and digital circuits, all this while obtaining the performance at the same level as the amplification modules. OPA1656 op-amps were chosen because of their immaculate performance and the extremely low DC offset allowed by their architecture. Three levels gain setting A switch on the rear of the amplifier allows you to set three different levels of gain. Depending on the output capability of your source (pre-amplifier or DAC with volume control) the system gain structure can be optimized for two main targets. The first is to have the lowest noise, the second the smoothest volume setting as possible. High gain is optimized for sources outputting 2V, medium for 4V, low for gear able to provide 10 V. While the noise levels of modern audio gear has become so low that noise optimization for home audio is often purely academic, having a smooth volume control is something we find so enjoyable that it was our main motivation for integrating the gain control switch. Beautiful chassis, attractive finish The full aluminum custom chassis is not only nice looking, it dissipates the heat of the amplification module. No screws are visible from front, top and sides. The front plate is machined in an aluminum block and spray painted with different colors that can be chosen while ordering. The top and sides cover is a single piece finished with a special paint, with a mate, suede-like texture providing avery qualitative look and feel. Listen to the music, forget the electronics Plug your audio source (with volume control), your speakers, the mains cable, switch on the mains, and forget your amplifier. The automatic on/off function detects the presence of sound at the input and automatically powers on the amplifier. After 10 minutes without sound at the input, the amplifier sets itself in standby, allowing an ultra low power consumption when not in use. Fully protected A full set of fault diagnostics allows to protect the amplifier and your speakers against abnormalities. Designed and proudly built in Luxembourg Arthur 4215/E2 was designed and is assembled at Schifflange, Luxembourg, at the heart of Europe.

Pair of Purifi Audio PTT6.5X04-NFA-01 6.5 Extended Stroke, Ultra Low Distortion Woofers. Retail price is currently $439 each. Great power handling and highly resolving! Purchased in January, 2022 and lightly used. See review article here: https://www.erinsaudiocorner.com/driveunits/purifi_ptt65w04/