OTOMON Laboratory　(音門ラボ) / Prototype 71A/101D drive VT-62 SE tube amplifier 7W power Zero NFB (O.U.D.D.C)

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Prototype 71A/101D drive VT-62 SE tube amplifier 7W power Zero NFB (O.U.D.D.C)

You can order input voltage 117V, 220V, 230V, 240V.

I dont open information about schematic, parts, transformer using in my amplifier. My brand name is the guarantee to what I do with my production !!!

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Prototype 71A/101D drive VT-62 SE tube amplifier 7W power Zero NFB (O.U.D.D.C)

THIS ITEM WAS SOLD OUT. If you want the same one, you can order me to get the same one.

Manufacturer:: OTOMON Lab

Audio amplifier » Tube amplifiers Audio amplifier » Special Order Made

This is prototype product that was made for trying the new circuit O.U.D.D.C, and the result is really amazing.

Original price for this amp is 3200USD plus shipping fee, tubes are not included. This is prototype version so I include all tubes except 71A tube. In prototype version, I used all Hirata TANGO transformers in this amp. All parts are new ones. This amplifier is working in class A, single end mode generate 7W of power for one channel. Zero NFB !!!

This one was made to compare with all VT62 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 here > http://soundgate.net/product/MTQ1MA...highend is bringing the best sound ever for the amp.

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 7W. Almost VT62 SE amplifier that I have made before has much distortion after 4W, this one get 7W 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 : 10Hz ~ 60KHz (-1db) Flatted from 20Hz to 40Khz
Hum level: 0.2mV
THD : 5% 7W

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