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We can provide power transformer which use for 117V, 220V, 230V, 240V.
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OTOMON LAB 71A drive 45/2A3/300B compatible PP tube amplifier 15W power Dual monoblock Zero NFB (O.U.D.D.C)

OTOMON LAB 71A drive 45/2A3/300B compatible PP tube amplifier 15W power Dual monoblock Zero NFB (O.U.D.D.C)

All transformers are vintage SANSUI transformer. This is prototype product and used vintage transformer, so price is cheaper than order made product. Original price as you see this amp was sold out is 3200USD. Input voltage is 100V only.

This can be used with 3 type of tube , 45/ 2A3 and 300B
Dual monoblock is monoblock amplifier but on one chassis.

This is absolutely the best PP 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 transformers 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 15W of power for one channel. Zero NFB !!!

With Zero NFB, the response frequency is flatted from 25Hz to 30Khz, At -1db it is from 10Hz to 40K Hz.

The output power is 15W. Almost 45PP tube amp generate 9-10W 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 ~ 40KHz (-1db) Flatted from 25Hz to 30Khz
Hum level: 0.6mV
THD : 5% 15W

  • Special order made
  • NEW
This item was SOLD OUT, you can ask me for ordering the same one or contact to me to get notification of the same one.
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OTOMON LAB 71A drive 45/2A3/300B compatible PP tube amplifier 15W power Dual monoblock Zero NFB (O.U.D.D.C)

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