OTOMON LAB 71A/101D drive VT-62/VT-25/10Y tube amplifier monoblock 7W Zero NFB

OTOMON LAB 71A/101D drive VT-62 tube amplifier 8W power Zero NFB O. This absolutely the best VT-62 tube amp that I have ever made. This is order made product that adopt new circuit. And the result is really amazing in low frequency. Prestage tube is 6SN7, drive tube is 71A, output power tube can be used with VT-62 or 10Y, VT-25. All parts are new ones. This amplifier is working in class A, single end mode generate 8W of power for one channel. With Zero NFB, the response frequency is flatted from 30Hz 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 7.5W (No NFB). Almost VT-62SE amplifier that I have made before has much distortion after 4W, this one get 7.5W of power at only 5% of distortion.

The sound as testing in our system is really good. The biggest characteristic of O. 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 30Hz to 30Khz Hum level: 0.2mV THD : 5% 7.5W.

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