I have an old NAD 7100 receiver, like this amp it has really excellent sound. "Tight" is how I would descrbe it. Well controlled. Good bass. Also the FM tuner is excellent.
Its a great receiver. Paired with good speakers, the sound is remarkably good.
Just a reminder if you have old equipment like this, it must be used, don't let it sit unused. Play it, or it breaks when you turn it on. If its been sitting for a while, get a variac so you can bring it and other equipment up slowly - reforming the capacitors, or they will blow up. If its been off for a few years, it takes some time - a few hours, to do this right.