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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[Prototype] OTOMON LAB 71A drive 45/2A3 PP tube amplifier 20W power monoblockx2 Zero NFB (O.U.D.D.C)
If you see [Prototype] in the title of this post, price will be 3000USD plus shipping fee, tubes are not inlcuded. Order price if this item was sold out is 3850USD
OTOMON LAB 71A drive 45/2A3 PP tube amplifier 20W power monoblockx2 Zero NFB (O.U.D.D.C)
This is absolutely the best 2A3PP amplifier that I have ever made, using O.U.D.D.C schematic
This is order made product that adopt new circuit O.U.D.D.C, and the result is as usual, really amazing.
OTOMON LAB 71A drive 45/2A3 PP tube amplifier 20W power monoblockx2 Zero NFB (O.U.D.D.C)
This is absolutely the best 2A3PP amplifier that I have ever made, using O.U.D.D.C schematic
This is order made product that adopt new circuit O.U.D.D.C, and the result is as usual, really amazing.
All parts are vintage ones. This is order made amplifier, so if you order the same one all transformer are new ISO (Tango) transformers. No tubes are included. This amplifier is working in class A, double pushpull mode generate 20W of power for one channel. Zero NFB !!!
With Zero NFB, the response frequency is flatted from 20Hz to 40Khz, this is impossible to all amplifier that I made before. At -1db it is from 10Hz to 60K Hz.
The output power is 20W. Almost 2A3PP tube amp generate 10-12W per channel.
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.
Specification (Zero NFB)
Response frequency : 10Hz ~ 60KHz (-1db) Flatted from 20Hz to 40Khz
Hum level: 0.2mV
THD : 5% 18W
With Zero NFB, the response frequency is flatted from 20Hz to 40Khz, this is impossible to all amplifier that I made before. At -1db it is from 10Hz to 60K Hz.
The output power is 20W. Almost 2A3PP tube amp generate 10-12W per channel.
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.
Specification (Zero NFB)
Response frequency : 10Hz ~ 60KHz (-1db) Flatted from 20Hz to 40Khz
Hum level: 0.2mV
THD : 5% 18W
$3,000.00
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