For your consideration is this incredibly rare 1950s Western Electric 618B Audio Input Transformer. By far the best phono step up transformer ever produced, this 100% all original gray 618B remains in perfect working condition. Cloth wire leads appear to be fully intact, never soldered. Fully tested, extremely healthy measurements, within WE spec per their data sheet. 618B #1. (This is the only 618B I currently have listed, though at the moment I have (3) other 618C advertised on eBay.)-- R R-W = 9.27 (8.9 = WE approx.)- R Bl = 224.93 (214 = WE approx.)- Gr Br = 2975.7 (2680 = WE approx.)

For your consideration is this incredibly rare 1950s Western Electric 618C Audio Input Transformer. By far the best phono step up transformer ever produced, this 100% all original gray 618C remains in perfect working condition. Fully tested, extremely healthy measurements, within WE spec per their data sheet. 618C #1. - R R-W = 236.42 (219 = WE approx.)- R Bl = 1132.8 (1034 = WE approx.)- Bl-W Gr-W = 3800.0 (3634 = WE approx.)

For your consideration is this incredibly rare 1950s Western Electric 618C Audio Input Transformer. By far the best phono step up transformer ever produced, this 100% all original gray 618C remains in perfect working condition. Fully tested, extremely healthy measurements, within WE spec per their data sheet. 618C #2. (This transformer is perfectly matched with another 618C I have listed, denoted as 618C #3 within the description.) - R R-W = 217.73 (219 = WE approx.) - R Bl = 1063.7 (1034 = WE approx.) - Bl-W Gr-W = 3748.1 (3634 = WE approx.)

For your consideration is this incredibly rare 1950s Western Electric 618C Audio Input Transformer. By far the best phono step up transformer ever produced, this 100% all original gray 618C remains in perfect working condition. Original cloth wire leads appear to be fully intact and never soldered. Fully tested, extremely healthy measurements, within WE spec per their data sheet. 618C #3. (This transformer is perfectly matched with another 618C I have listed, denoted as 618C #2 within the description.)- - R R-W = 216.48 (219 = WE approx.) - R Bl = 1047.5 (1034 = WE approx.) - Bl-W Gr-W = 3562.2 (3634 = WE approx.)

This transformer comes from a tape machine setup. Theres a dent on the case, but it works perfectly and dont pick up any noise. It is PERFECT for MC-step-up, close to a Western Electric 618B, with just a little lower turns ratio. Originally used as a tape head to preamp input, its a recording studio quality transformer made by Jensen transformers back in the golden era of tube and discrete audio electronics. Its a really rare finding! I used to have more of these, but sold them all on Ebay, a long time ago. This is the last pair Ive kept for personal use, but Ill have to also let these go now. You wont see this very often. Seems like a custom job from Jensen. I actually never seen anything alike. I just know these are made by Jensen transformers because I collect professional audio transformers for over 25 years now, and I know this is jensen mumetal case, a Jensen part number (starts with JE) and also classic Jensen letter printing on model name and soldering pins. I know my stuff, and have tested transformers from all of the very best manufacturers, vintage and new production, likeJorgen Shou JS, Western Electric, Langevin, Marinair, Parmeko, Partridge, UTC, Tamura, Peerless, Triad, Thordarson, Chicago, Beyerdynamic, Altec, Telefunken, Malotki, Siemens, Seinnheiser, Lundahl, Raphaelite, Haufe, Pikatron, Sowter, etc. These are my tests: Pri 1.7R resistance Sec 550R resistance 1:14 turns ratio Impedances: Primary 5-40 ohms Secondary 1k-8k ohms These are possible impedance ratio connections with these wonderful transformers: 5:1k ohms 6:1k2 ohms 7:1k4 ohms 8:1k6 ohms 10:2k ohms 15:3k ohms 20:4k ohms 30:6k ohms 40:8k ohms Its just perfect for most low impedance MC cartridges. Buy this and use it to make your preferred moving coil cartridges come alive. This transformer was born to shine with the best cartridges from Ortofon, Shure, Denon, Accuphase, Goldring, Nagoka, Audio Technica, ADC, Roksan, Rega, Koetsu, Grado, Clearaudio, Sumiko, Benz Micro, My Sonic Lab, Hana, ZYX, Miyajima, Vertere Acoustics, Ana Mighty Sound, Charisma Audio, Allnic Audio, Soundsmith, Lyra, Acoustical Systems, MoFi, Shelter, etc. The inductance is high and the resistance of the windings are low. This is a SOLID option made by one of the Americas greatest audio transformer manufacturing companies. I can provide professional wiring info to the buyer, if needed. Get these while you can! Unfortunately, due to COVID-19 limitations (yes, still), I cant ship to Australia. Dont ask me why. More good audio parts in my other items. Make sure you check it!

This transformer comes from a tape machine setup. This is the exact same shielding case and very similar pin diameter and aspec, same pinout and and also the potting compound color and feel are very close when compared to the other JENSEN transformer in my other auctions. It differs slightly, has no model number and also a bit different specs when tested, but nothing that big. I guess its an early render or a prototype or something tgat was in one of the cards from the taoe recorder I took them from. It is PERFECT for MC-step-up, close to a Western Electric 618B, with just a little lower turns ratio. Originally used as a tape head to preamp input, its a recording studio quality transformer made by Jensen transformers back in the golden era of tube and discrete audio electronics. Its a really rare find! I used to have more of these, but sold them all on Ebay, a long time ago. This is the last pair Ive kept for personal use, but Ill have to also let these go now. You wont see this very often. Seems like a custom job from Jensen. I actually never seen anything alike. I just know the transformers from these cards are made by Jensen transformers because I collect professional audio transformers for over 25 years now, and I know this is jensens mumetal case, a Jensen part number (starts with JE) and also classic Jensen letter printing on model name and soldering pins, and although this particular one lacks the last bit, all the other transformers that looks pretty similar and came from the same cards had those Jensen signature marks. It has all the other Jensen characteristics thought. I know my stuff, and have tested transformers from all of the very best manufacturers, vintage and new production, likeJorgen Shou JS, Western Electric, Langevin, Marinair, Parmeko, Partridge, UTC, Tamura, Peerless, Triad, Thordarson, Chicago, Beyerdynamic, Altec, Telefunken, Malotki, Siemens, Seinnheiser, Lundahl, Raphaelite, Haufe, Pikatron, Sowter, etc. These are my tests: Pri 11R resistance Sec 167R resistance 1:9 turns ratio Impedances: Primary 15 - 100 ohms Secondary 1k2-8k ohms These are possible impedance ratio connections with these wonderful transformers: 15:1k2 ohms 20:1k6 ohms 30:2k4 ohms 40:3k2 ohms 10:2k ohms 50:4k ohms 60:4k8 ohms 75:6k ohms 100:8k ohms Its just perfect for most low impedance MC cartridges. Buy this and use it to make your preferred moving coil cartridges come alive. This transformer was born to shine with the best cartridges from Ortofon, Shure, Denon, Accuphase, Goldring, Nagoka, Audio Technica, ADC, Roksan, Rega, Koetsu, Grado, Clearaudio, Sumiko, Benz Micro, My Sonic Lab, Hana, ZYX, Miyajima, Vertere Acoustics, Ana Mighty Sound, Charisma Audio, Allnic Audio, Soundsmith, Lyra, Acoustical Systems, MoFi, Shelter, etc. The inductance is high and the resistance of the windings are low. This is a SOLID option made by one of the Americas greatest audio transformer manufacturing companies. I can provide professional wiring info to the buyer, if needed. Get these while you can! Unfortunately, due to COVID-19 limitations (yes, still), I cant ship to Australia. Dont ask me why. More good audio parts in my other items. Make sure you check it!

40s year Peerless transformer, primary is 30, 125ohm, 300ohm secondary is 50K ohm. You can use it as input transformer as well as MC cartridge step up transformer. Vintage sound, very sweet, hot middle sound. This is very very rare and hard to be found item. With step up ratio is 1:10, 1:20 or 1:40 you can use this item for many purpose, MC step up transformer as well as line transformer v..v.. Inner wire used 40s year Western electric wire. Sound is nearly same as WE-618B Please check business term before bidding on my item /////////////////////////////// NOTE: 1. If you want to buy item, press buy it now or make offer button if you want to offer your best price. 2. I only ship item via EMS or Fedex, I dont accept ship item via sea way. 3. Please make your payment within 3 days. 4. If you have any question about item, feel free to ask me before bidding. Generally, I dont response to question ask about what is your best price, you can press best offer button and input your best price. If there is no best offer button then item is fixed price. 5. If you want to find any item related to audio turntable, audio vintage or amplifier, and you can not see in my listing, please ask me via message, I can help you find it. 6. If you want to know about me, you can search on google with key word Otomon Laboratory //////////////////////////////

This transformer comes from a tape machine setup. This is the exact same shielding case and very similar pin diameter and aspec, same pinout and and also the potting compound color and feel are very close when compared to the other JENSEN transformer in my other auctions. It differs slightly, has no model number and also a bit different specs when tested, but nothing that big. I guess its an early render or a prototype or something tgat was in one of the cards from the taoe recorder I took them from. It is PERFECT for MC-step-up, close to a Western Electric 618B, with just a little lower turns ratio. Originally used as a tape head to preamp input, its a recording studio quality transformer made by Jensen transformers back in the golden era of tube and discrete audio electronics. Its a really rare find! I used to have more of these, but sold them all on Ebay, a long time ago. This is the last pair Ive kept for personal use, but Ill have to also let these go now. You wont see this very often. Seems like a custom job from Jensen. I actually never seen anything alike. I just know the transformers from these cards are made by Jensen transformers because I collect professional audio transformers for over 25 years now, and I know this is jensens mumetal case, a Jensen part number (starts with JE) and also classic Jensen letter printing on model name and soldering pins, and although this particular one lacks the last bit, all the other transformers that looks pretty similar and came from the same cards had those Jensen signature marks. It has all the other Jensen characteristics thought. I know my stuff, and have tested transformers from all of the very best manufacturers, vintage and new production, likeJorgen Shou JS, Western Electric, Langevin, Marinair, Parmeko, Partridge, UTC, Tamura, Peerless, Triad, Thordarson, Chicago, Beyerdynamic, Altec, Telefunken, Malotki, Siemens, Seinnheiser, Lundahl, Raphaelite, Haufe, Pikatron, Sowter, etc. These are my tests: Pri 11R resistance Sec 167R resistance 1:9 turns ratio Impedances: Primary 15 - 100 ohms Secondary 1k2-8k ohms These are possible impedance ratio connections with these wonderful transformers: 15:1k2 ohms 20:1k6 ohms 30:2k4 ohms 40:3k2 ohms 10:2k ohms 50:4k ohms 60:4k8 ohms 75:6k ohms 100:8k ohms Its just perfect for most low impedance MC cartridges. Buy this and use it to make your preferred moving coil cartridges come alive. This transformer was born to shine with the best cartridges from Ortofon, Shure, Denon, Accuphase, Goldring, Nagoka, Audio Technica, ADC, Roksan, Rega, Koetsu, Grado, Clearaudio, Sumiko, Benz Micro, My Sonic Lab, Hana, ZYX, Miyajima, Vertere Acoustics, Ana Mighty Sound, Charisma Audio, Allnic Audio, Soundsmith, Lyra, Acoustical Systems, MoFi, Shelter, etc. The inductance is high and the resistance of the windings are low. This is a SOLID option made by one of the Americas greatest audio transformer manufacturing companies. I can provide professional wiring info to the buyer, if needed. Get these while you can! Unfortunately, due to COVID-19 limitations (yes, still), I cant ship to Australia. Dont ask me why. More good audio parts in my other items. Make sure you check it!

This transformer comes from a tape machine setup. This is the exact same shielding case and very similar pin diameter and aspec, same pinout and and also the potting compound color and feel are very close when compared to the other JENSEN transformer in my other auctions. It differs slightly, has no model number and also a bit different specs when tested, but nothing that big. I guess its an early render or a prototype or something tgat was in one of the cards from the taoe recorder I took them from. It is PERFECT for MC-step-up, close to a Western Electric 618B, with just a little lower turns ratio. Originally used as a tape head to preamp input, its a recording studio quality transformer made by Jensen transformers back in the golden era of tube and discrete audio electronics. Its a really rare find! I used to have more of these, but sold them all on Ebay, a long time ago. This is the last pair Ive kept for personal use, but Ill have to also let these go now. You wont see this very often. Seems like a custom job from Jensen. I actually never seen anything alike. I just know the transformers from these cards are made by Jensen transformers because I collect professional audio transformers for over 25 years now, and I know this is jensens mumetal case, a Jensen part number (starts with JE) and also classic Jensen letter printing on model name and soldering pins, and although this particular one lacks the last bit, all the other transformers that looks pretty similar and came from the same cards had those Jensen signature marks. It has all the other Jensen characteristics thought. I know my stuff, and have tested transformers from all of the very best manufacturers, vintage and new production, likeJorgen Shou JS, Western Electric, Langevin, Marinair, Parmeko, Partridge, UTC, Tamura, Peerless, Triad, Thordarson, Chicago, Beyerdynamic, Altec, Telefunken, Malotki, Siemens, Seinnheiser, Lundahl, Raphaelite, Haufe, Pikatron, Sowter, etc. These are my tests: Pri 11R resistance Sec 167R resistance 1:9 turns ratio Impedances: Primary 15 - 100 ohms Secondary 1k2-8k ohms These are possible impedance ratio connections with these wonderful transformers: 15:1k2 ohms 20:1k6 ohms 30:2k4 ohms 40:3k2 ohms 10:2k ohms 50:4k ohms 60:4k8 ohms 75:6k ohms 100:8k ohms Its just perfect for most low impedance MC cartridges. Buy this and use it to make your preferred moving coil cartridges come alive. This transformer was born to shine with the best cartridges from Ortofon, Shure, Denon, Accuphase, Goldring, Nagoka, Audio Technica, ADC, Roksan, Rega, Koetsu, Grado, Clearaudio, Sumiko, Benz Micro, My Sonic Lab, Hana, ZYX, Miyajima, Vertere Acoustics, Ana Mighty Sound, Charisma Audio, Allnic Audio, Soundsmith, Lyra, Acoustical Systems, MoFi, Shelter, etc. The inductance is high and the resistance of the windings are low. This is a SOLID option made by one of the Americas greatest audio transformer manufacturing companies. I can provide professional wiring info to the buyer, if needed. Get these while you can! Unfortunately, due to COVID-19 limitations (yes, still), I cant ship to Australia. Dont ask me why. More good audio parts in my other items. Make sure you check it!

This transformer comes from a tape machine setup. Theres a dent on the case, but it works perfectly and dont pick up any noise. It is PERFECT for MC-step-up, close to a Western Electric 618B, with just a little lower turns ratio. Originally used as a tape head to preamp input, its a recording studio quality transformer made by Jensen transformers back in the golden era of tube and discrete audio electronics. Its a really rare finding! I used to have more of these, but sold them all on Ebay, a long time ago. This is the last pair Ive kept for personal use, but Ill have to also let these go now. You wont see this very often. Seems like a custom job from Jensen. I actually never seen anything alike. I just know these are made by Jensen transformers because I collect professional audio transformers for over 25 years now, and I know this is jensen mumetal case, a Jensen part number (starts with JE) and also classic Jensen letter printing on model name and soldering pins. I know my stuff, and have tested transformers from all of the very best manufacturers, vintage and new production, likeJorgen Shou JS, Western Electric, Langevin, Marinair, Parmeko, Partridge, UTC, Tamura, Peerless, Triad, Thordarson, Chicago, Beyerdynamic, Altec, Telefunken, Malotki, Siemens, Seinnheiser, Lundahl, Raphaelite, Haufe, Pikatron, Sowter, etc. These are my tests: Pri 1.7R resistance Sec 550R resistance 1:14 turns ratio Impedances: Primary 5-40 ohms Secondary 1k-8k ohms These are possible impedance ratio connections with these wonderful transformers: 5:1k ohms 6:1k2 ohms 7:1k4 ohms 8:1k6 ohms 10:2k ohms 15:3k ohms 20:4k ohms 30:6k ohms 40:8k ohms Its just perfect for most low impedance MC cartridges. Buy this and use it to make your preferred moving coil cartridges come alive. This transformer was born to shine with the best cartridges from Ortofon, Shure, Denon, Accuphase, Goldring, Nagoka, Audio Technica, ADC, Roksan, Rega, Koetsu, Grado, Clearaudio, Sumiko, Benz Micro, My Sonic Lab, Hana, ZYX, Miyajima, Vertere Acoustics, Ana Mighty Sound, Charisma Audio, Allnic Audio, Soundsmith, Lyra, Acoustical Systems, MoFi, Shelter, etc. The inductance is high and the resistance of the windings are low. This is a SOLID option made by one of the Americas greatest audio transformer manufacturing companies. I can provide professional wiring info to the buyer, if needed. Get these while you can! Unfortunately, due to COVID-19 limitations (yes, still), I cant ship to Australia. Dont ask me why. More good audio parts in my other items. Make sure you check it!

This transformer comes from a tape machine setup. This is the exact same shielding case and very similar pin diameter and aspec, same pinout and and also the potting compound color and feel are very close when compared to the other JENSEN transformer in my other auctions. It differs slightly, has no model number and also a bit different specs when tested, but nothing that big. I guess its an early render or a prototype or something tgat was in one of the cards from the taoe recorder I took them from. It is PERFECT for MC-step-up, close to a Western Electric 618B, with just a little lower turns ratio. Originally used as a tape head to preamp input, its a recording studio quality transformer made by Jensen transformers back in the golden era of tube and discrete audio electronics. Its a really rare find! I used to have more of these, but sold them all on Ebay, a long time ago. This is the last pair Ive kept for personal use, but Ill have to also let these go now. You wont see this very often. Seems like a custom job from Jensen. I actually never seen anything alike. I just know the transformers from these cards are made by Jensen transformers because I collect professional audio transformers for over 25 years now, and I know this is jensens mumetal case, a Jensen part number (starts with JE) and also classic Jensen letter printing on model name and soldering pins, and although this particular one lacks the last bit, all the other transformers that looks pretty similar and came from the same cards had those Jensen signature marks. It has all the other Jensen characteristics thought. I know my stuff, and have tested transformers from all of the very best manufacturers, vintage and new production, likeJorgen Shou JS, Western Electric, Langevin, Marinair, Parmeko, Partridge, UTC, Tamura, Peerless, Triad, Thordarson, Chicago, Beyerdynamic, Altec, Telefunken, Malotki, Siemens, Seinnheiser, Lundahl, Raphaelite, Haufe, Pikatron, Sowter, etc. These are my tests: Pri 11R resistance Sec 167R resistance 1:9 turns ratio Impedances: Primary 15 - 100 ohms Secondary 1k2-8k ohms These are possible impedance ratio connections with these wonderful transformers: 15:1k2 ohms 20:1k6 ohms 30:2k4 ohms 40:3k2 ohms 10:2k ohms 50:4k ohms 60:4k8 ohms 75:6k ohms 100:8k ohms Its just perfect for most low impedance MC cartridges. Buy this and use it to make your preferred moving coil cartridges come alive. This transformer was born to shine with the best cartridges from Ortofon, Shure, Denon, Accuphase, Goldring, Nagoka, Audio Technica, ADC, Roksan, Rega, Koetsu, Grado, Clearaudio, Sumiko, Benz Micro, My Sonic Lab, Hana, ZYX, Miyajima, Vertere Acoustics, Ana Mighty Sound, Charisma Audio, Allnic Audio, Soundsmith, Lyra, Acoustical Systems, MoFi, Shelter, etc. The inductance is high and the resistance of the windings are low. This is a SOLID option made by one of the Americas greatest audio transformer manufacturing companies. I can provide professional wiring info to the buyer, if needed. Get these while you can! Unfortunately, due to COVID-19 limitations (yes, still), I cant ship to Australia. Dont ask me why. More good audio parts in my other items. Make sure you check it!

This transformer comes from a tape machine setup. This is the exact same shielding case and very similar pin diameter and aspec, same pinout and and also the potting compound color and feel are very close when compared to the other JENSEN transformer in my other auctions. It differs slightly, has no model number and also a bit different specs when tested, but nothing that big. I guess its an early render or a prototype or something tgat was in one of the cards from the taoe recorder I took them from. It is PERFECT for MC-step-up, close to a Western Electric 618B, with just a little lower turns ratio. Originally used as a tape head to preamp input, its a recording studio quality transformer made by Jensen transformers back in the golden era of tube and discrete audio electronics. Its a really rare find! I used to have more of these, but sold them all on Ebay, a long time ago. This is the last pair Ive kept for personal use, but Ill have to also let these go now. You wont see this very often. Seems like a custom job from Jensen. I actually never seen anything alike. I just know the transformers from these cards are made by Jensen transformers because I collect professional audio transformers for over 25 years now, and I know this is jensens mumetal case, a Jensen part number (starts with JE) and also classic Jensen letter printing on model name and soldering pins, and although this particular one lacks the last bit, all the other transformers that looks pretty similar and came from the same cards had those Jensen signature marks. It has all the other Jensen characteristics thought. I know my stuff, and have tested transformers from all of the very best manufacturers, vintage and new production, likeJorgen Shou JS, Western Electric, Langevin, Marinair, Parmeko, Partridge, UTC, Tamura, Peerless, Triad, Thordarson, Chicago, Beyerdynamic, Altec, Telefunken, Malotki, Siemens, Seinnheiser, Lundahl, Raphaelite, Haufe, Pikatron, Sowter, etc. These are my tests: Pri 11R resistance Sec 167R resistance 1:9 turns ratio Impedances: Primary 15 - 100 ohms Secondary 1k2-8k ohms These are possible impedance ratio connections with these wonderful transformers: 15:1k2 ohms 20:1k6 ohms 30:2k4 ohms 40:3k2 ohms 10:2k ohms 50:4k ohms 60:4k8 ohms 75:6k ohms 100:8k ohms Its just perfect for most low impedance MC cartridges. Buy this and use it to make your preferred moving coil cartridges come alive. This transformer was born to shine with the best cartridges from Ortofon, Shure, Denon, Accuphase, Goldring, Nagoka, Audio Technica, ADC, Roksan, Rega, Koetsu, Grado, Clearaudio, Sumiko, Benz Micro, My Sonic Lab, Hana, ZYX, Miyajima, Vertere Acoustics, Ana Mighty Sound, Charisma Audio, Allnic Audio, Soundsmith, Lyra, Acoustical Systems, MoFi, Shelter, etc. The inductance is high and the resistance of the windings are low. This is a SOLID option made by one of the Americas greatest audio transformer manufacturing companies. I can provide professional wiring info to the buyer, if needed. Get these while you can! Unfortunately, due to COVID-19 limitations (yes, still), I cant ship to Australia. Dont ask me why. More good audio parts in my other items. Make sure you check it!

This transformer comes from a tape machine setup. Theres a dent on the case, but it works perfectly and dont pick up any noise. It is PERFECT for MC-step-up, close to a Western Electric 618B, with just a little lower turns ratio. Originally used as a tape head to preamp input, its a recording studio quality transformer made by Jensen transformers back in the golden era of tube and discrete audio electronics. Its a really rare finding! I used to have more of these, but sold them all on Ebay, a long time ago. This is the last pair Ive kept for personal use, but Ill have to also let these go now. You wont see this very often. Seems like a custom job from Jensen. I actually never seen anything alike. I just know these are made by Jensen transformers because I collect professional audio transformers for over 25 years now, and I know this is jensen mumetal case, a Jensen part number (starts with JE) and also classic Jensen letter printing on model name and soldering pins. I know my stuff, and have tested transformers from all of the very best manufacturers, vintage and new production, likeJorgen Shou JS, Western Electric, Langevin, Marinair, Parmeko, Partridge, UTC, Tamura, Peerless, Triad, Thordarson, Chicago, Beyerdynamic, Altec, Telefunken, Malotki, Siemens, Seinnheiser, Lundahl, Raphaelite, Haufe, Pikatron, Sowter, etc. These are my tests: Pri 1.7R resistance Sec 550R resistance 1:14 turns ratio Impedances: Primary 5-40 ohms Secondary 1k-8k ohms These are possible impedance ratio connections with these wonderful transformers: 5:1k ohms 6:1k2 ohms 7:1k4 ohms 8:1k6 ohms 10:2k ohms 15:3k ohms 20:4k ohms 30:6k ohms 40:8k ohms Its just perfect for most low impedance MC cartridges. Buy this and use it to make your preferred moving coil cartridges come alive. This transformer was born to shine with the best cartridges from Ortofon, Shure, Denon, Accuphase, Goldring, Nagoka, Audio Technica, ADC, Roksan, Rega, Koetsu, Grado, Clearaudio, Sumiko, Benz Micro, My Sonic Lab, Hana, ZYX, Miyajima, Vertere Acoustics, Ana Mighty Sound, Charisma Audio, Allnic Audio, Soundsmith, Lyra, Acoustical Systems, MoFi, Shelter, etc. The inductance is high and the resistance of the windings are low. This is a SOLID option made by one of the Americas greatest audio transformer manufacturing companies. I can provide professional wiring info to the buyer, if needed. Get these while you can! Unfortunately, due to COVID-19 limitations (yes, still), I cant ship to Australia. Dont ask me why. More good audio parts in my other items. Make sure you check it!