Looking for the same answer. Was about to buy new phones but realized these are actually really good if I replace the horrible old circuit from a pair of computer speakers I'm using as an amp, and EQ them right.
The thing with receivers is that some can roll the bass off too early. I tried two different consumer integrated stereos and both had a huge drop starting at 100hz and down and practically zero signal regardless of volume level at 20 or so hertz. Not that this is the issue, there is twenty times too little signal at like 30. It was rather horrible for ambient stuff or classical. A proper receiver would probably not do this. It reminds me of a single-unit integrated phono player with built in radio and all. The inputs were labeled "Tape" on the source selector and a certain song "return of the bassheads" or something by Digital Assassins had a long repeating dropping tone. It made the woofers move an inch back and forth at literally 1 or 2 hz before they stopped and the next drop came :P If you can, just test the candidate receiver for a lack of low bass before buying.
Any other recommendation for the CMoy? I wanted to build a dynalo with not-so-expensive components but realized getting all the transistors is near impossible. There are practically no redesigns or current suggestions for modern replacements for all of them. CMoy looks great. I will be driving 24 ohm phones though. Is this an issue? How important is buffering?
I am wondering about using other opamps in the CMoy. I see oscillation is a common issue. Let's say I drop some other opamp into the CMoy. How can I tell, with a multimeter, whether it is stable, or acting up? There's more than enough technical explanation of why and what is happening, but for the new DIYer who wants to try different opamps, there has to be an easy way to confirm it is alright before listening blindly.
