Bryston 5B ST 3 by 120W channel power amplifier. In excellent working condition and appearance. Use as two channel or hook up to your surround sound two main speakers and center. Currently hooked up to B&W CM9 S2 speakers. Willing to demo, bring your favourite CDs. I also have a 4B st (not for sale) but can demo this amp also for a comparison, you won't be able to tell the difference. 120 watts rms per channel into 8 ohms, all channels driven, 20 Hz - 20kHz. 200 watts rms into 4 ohms Size 5 1/2"H x 17"W x 17"D PS I did contact Bryston, in fact the amps were both built in November of 1996, making them 23 years old. I asked if there was any maintenance work I could do on the amps. Person on the line said these are on the relatively new side of things in terms of the amps they see...but after 30 years, possibly some of the caps may need replacing, but he said , likely not, just continue using as you have been, there will be a lot of good years in them.