Check the listing for details. crown d150a classic power amp great cosmetics tested works. Color: Silver, Condition: Used, Made in United States. Listed at 179.00 USD. Here’s another classic amp from crown. The d150a is definitely reknowned with the pro audio community.replaced power cord and it’s short like 18” or so and I didn’t get the sinch grommet back on there which is an easy fix if desired, power on bulb needs replacing . .I checked it out somewhat and cleaned the volume pots which had lots of noise , I seemed to have pretty much cleared them up. I don’t know anything other than both channels seem to work as intended don’t know if anything is needed internally to improve performance but I’m sure with its age there’s a few things that could be needing replaced . Very good looking amp cosmetically . Thanks so much for stopping by and I hope you have a great day!