I've owned and upgraded variants of these for 17 years. NP220s can be very nice sounding amps depending on the level of upgrades so you may be disappointed with something else. Haven't heard the BHK amp, but it's worth checking out if you decided to go that way.
I'd try to get it fixed depending on what's wrong with it. Hopefully it's not a bad circuit board as there were problems with some of those.
There are very few schematics of these. It's a complicated circuit. Bigkids is your guy.
Good luck.
I'd try to get it fixed depending on what's wrong with it. Hopefully it's not a bad circuit board as there were problems with some of those.
There are very few schematics of these. It's a complicated circuit. Bigkids is your guy.
Good luck.