We can provide power transformer which use for 117V, 220V, 230V, 240V.
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Facebook Channel: Otomon Vintage FB
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OTOMON LAB 71A/101D drive 2A3 SE tube amplifier 6W power Zero NFB (O.U.D.D.C)
This is absolutely the best 2A3 amplifier that I have ever made.
This is order made product that adopt new circuit O.U.D.D.C, and the result is really amazing.
All parts are new ones. No tubes are included. This amplifier is working in class A, single end mode generate 6W of power for one channel. Zero NFB !!!
This one was made to compare with all 2A3 tube amp that I have ever made. The result that was calculated via Technical Tester and Hearing via speaker improved that the O.U.D.D.C (Detail in OTOMON website) is bringing the best sound ever for the amp.
With Zero NFB, the response frequency is flatted from 25Hz to 30Khz, this is impossible to all amplifier that I made before. At -1db it is from 16Hz to 40K Hz.
The output power is 6W. Almost 2A3 SE amplifier that I have made before has much distortion after 3W, this one get 6W of power at only 5% of distortion.
The sound as testing in our system is really good. The biggest characteristic of O.U.D.D.C is that it bring a quite difference bass sound. Deep, open sound stage and detail.
There is option that allow very little NFB (-3db ), if you dont like NFB, you can choose Zero NFB by changing the switch.
Specification (Zero NFB)
Response frequency : 16Hz ~ 40KHz (-1db) Flatted from 25Hz to 30Khz
Hum level: 0.2mV
THD : 5% 6W
This is order made product that adopt new circuit O.U.D.D.C, and the result is really amazing.
All parts are new ones. No tubes are included. This amplifier is working in class A, single end mode generate 6W of power for one channel. Zero NFB !!!
This one was made to compare with all 2A3 tube amp that I have ever made. The result that was calculated via Technical Tester and Hearing via speaker improved that the O.U.D.D.C (Detail in OTOMON website) is bringing the best sound ever for the amp.
With Zero NFB, the response frequency is flatted from 25Hz to 30Khz, this is impossible to all amplifier that I made before. At -1db it is from 16Hz to 40K Hz.
The output power is 6W. Almost 2A3 SE amplifier that I have made before has much distortion after 3W, this one get 6W of power at only 5% of distortion.
The sound as testing in our system is really good. The biggest characteristic of O.U.D.D.C is that it bring a quite difference bass sound. Deep, open sound stage and detail.
There is option that allow very little NFB (-3db ), if you dont like NFB, you can choose Zero NFB by changing the switch.
Specification (Zero NFB)
Response frequency : 16Hz ~ 40KHz (-1db) Flatted from 25Hz to 30Khz
Hum level: 0.2mV
THD : 5% 6W
$2,850.00 ～ $3,300.00
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