David Berning ZOTL Pre One Audio Preamplifier - Line Level Röhrenvorverstärker, 100 - 240 VAC Der Röhrenverstärker ist in einem ausgezeichneten, neuwertigem Zustand - siehe Fotos, diese sind integraler Bestandteil der Artikelbeschreibung. Der Versand ist grundsätzlich möglich. Bezahlung ausschliesslich per Paypal, Überweisung oder bar bei Abholung. Die Ware wird nicht zurückgenommen und unter Ausschluss jeglicherGewährleistung verkauft. Der Ausschluss gilt nicht für Schadenersatzansprücheaus grob fahrlässiger bzw. vorsätzlicher Verletzung von Pflichten desVerkäufers sowie für jede Verletzung von Leben, Körper und Gesundheit. Informationen von der David Berning Website: The ZOTL PRE ONE is a stereo vacuum-tube single-chassis preamplifier that uses the output transformerless ZOTL technology (US Patent 5,612,646). The ZOTL PRE ONE provides for five input sources plus one processing loop source. Two main output jacks and one 1/4 inch headphone jack are provided. Except for the headphone jack, all audio connections are via single-ended RCA jacks. The ZOTL PRE ONE can be powered universally (100 V - 240 V) from the AC mains or from an external 12 V source. As to the controls in the preamplifier, volume adjustment is via a 24-step switch that uses precision resistors. There are also separate eight-position step attenuator switches for each channel to allow balance adjustment. Source selection is made by a rotary switch or processing loop toggle. Other switches include mono, phase invert, and mute.

Linear Tube Audio MicroZOTL MZ2 headphone amp designed by legendary engineer David Berning. Comes with upgraded LPS power supply for added depth of soundstage and silent background. Unit features upgraded Tung-Sol 6sn7GTB and Tung-Sol 12AT7 6201 tube compliment; a nice step up in Sonic’s from stock Chinese tubes. Amp works perfectly… a few superficial marks on the face. The plexiglass top is near flawless showcasing the intricacies of the design. Cosmetics: 8.5/10, Functionality: 10/10. My favorite thing about this unit is its versatility in that it has two speaker jacks, allowing it to serve as a low wattage power amp (1 wpc). I have used this to drive my vintage Klipsch Forte 2s with stunning results. Filled my entire home with lush, tubey goodness…tremendous instrument separation. Ultimately what sets this amp apart is the DEAD-SILENT background. It’s just non-existent; that’s the transformer-less technology for ya…a stunning achievement and why this design received the reviews it did. I was using this MZ2 in my office as a headphone amp while also driving a pair of ADS L300C (88 db?, hardly high-efficiency) and it still could drive you out of the room. This unit is now discontinued and will become a collectors item; the only reason I’m passing this along is my wife and daughter surprised me with an MZ3. Continental US only.