Hello,
I have accumulated in the last ten years a 150 w/ch haffler amp, a pioneer receiver, and a 400w JBL subwoofer. All work and have been little used, but they've been replaced with newer components in my system. Although they were expensive and very competent in their time, now they just take up storage space. They're not worth selling, but I hate to dispose of them. Are there any uses for them in a modern A/V system?