Vacuum tube Phono Pre-amp power by 12VDC adapter.
Автор: 6p1p
Загружено: 2021-04-30
Просмотров: 163
Описание:
First power up Vacuum tube Base RIAA phono pre-amplifier.. The board build in Booster converter from 12V to 250V .. Overall gain is about 1200 times. at 12VDC current about 1A
The background have "do do do do" sound is due to my phono player Rubber wheel problem.My phone voice recording is very poor. The reality sound good. The sound until about 2min after only start to have bass.
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