OTOMON 45/2A3/300B compatible amplifier pure class A1 (O.U.D.D.C) * Zero NFB

Description: OTOMON LAB 71A drive 45/2A3/300B compatible PP tube amplifier 20W power monoblock X 2 Zero NFB (O.U.D.D.C)This is absolutely the best amplifier that I have ever made, using O.U.D.D.C schematic.This is prototype product with all vintage HIrata TANGO transformer, driver transformer is Hashimoto. Original order made price as this one is sold out is 4250USD. Tubes and shipping fee are not included.It can be used with 45/2A3 and 300B, max output as tube is 300B, at 20W. You can enjoy the different sound of 3 type of tubes in one amp.This is order made product that adopt new circuit O.U.D.D.C, and the result is as usual, really amazing.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 80K Hz.The output power is 20W. Almost 300B PP tube amp generate 15-18W 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 ~ 80KHz (-1db) Flatted from 20Hz to 40KhzHum level: 0.3mVTHD : 5% 20W Hybrid bias, you dont need to care any thing every time changing tube. Tubes are not included/////////////////////////////// NOTE: 1. If you want to buy item, press buy it now or make offer button if you want to offer your best price.2. I only ship item via EMS or Fedex, I dont accept ship item via sea way. If you buy many items from my listing, make payment via Buy it now, I will combine shipping if possible and refund the overcharge shipping fee. 3. Please make your payment within 3 days. 4. If you have any question about item, feel free to ask me before bidding. Generally, I dont response to question ask about what is your best price, you can press best offer button and input your best price. If there is no best offer button then item is fixed price. 5. If you want to find any item related to audio turntable, audio vintage or amplifier, and you can not see in my listing, please ask me via message, I can help you find it. 6. If you want to know about me, you can search on google with key word "Otomon Laboratory" //////////////////////////////

Price: 7500 USD

Location: Tokyo

End Time: 2024-08-15T07:10:06.000Z

Shipping Cost: 550 USD