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RE: how does that work

it is an integrated amp I guess. It uses some other chip for preamp stage. At least, I am not using it with a preamp. Input is direct from Modi 3 DAC.

I have seen youtube video where someone changed a resistor on one of the chips to lower the gain, which also lowers distortion. But that change looks really awkward due to limited working space inside so I didn't try it.

Changing the caps was a pain, but turned out to be worth it. I was not that impressed with the sound prior to that change and did not expect the improvement in sound. I decided to change the caps solely to avoid blow up since I provide close to max power voltage limit and the caps were very likely counterfeit. Had to twist off the old ones, desolder the old cap leads from the board and install the new caps. Need a good soldering iron, good lighting, and patience for that work.

Also I have efficient speakers - supposedly 92db. And the distortion on these amps goes up with increase in output. I don't need to push it with my Ref3A DeCapo I speakers.




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