Large heavy vintage Mcintosh 40 amp. Has some wear as seen in the photos. I did not test it because I have no way to test it. We just got this amp from a house where the gentleman liked  vintage stereo equipment and cars. The amp looks like it will work and other than the surface rust seen is in great shape. Very heavy about 35 pounds. We have another vintage amp we are listing also so check it out. Email any questions before bidding. Buyer pays shipping. Thank you for looking at my auction.