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BRZHIFI A20 / Reisong A10 PCB same amp?

I currently own a BRZHIFI A20 which I bought as an experiment. It is my first tube amp. I noticed it is VERY similair in design to the Reisong A10 PCB version. In fact I dare to say they are the exact same amps! Only differences being in terms of quality. Are they the same?

I want to experiment with upgrades to see what it can do. Replacing the caps with film ones should be easy. But what more can be done?

3 answers0 replies

3 Comments

Yarach

Oct 31, 2022

I have taken some pictures of the PCB. What do you think? My main question is trying to figure out what the capacitors are for.

Junkman George

Mar 22

Replying to

I would suggest, when replacing resistors, that tend to run warm/hot, on a circuit board, you space the resistor to be installed about 1/4 - 1/2 an inch above the board, as not to burn up the board.

To make things look neat and uniform I have several chunks of cut down chop sticks to place between the resistor and board to be removed after the resistor is soldered in.