I bought it off of ebay "buy it now". It came with the original packaging and cosmetically mint. The seller said one channel was out. I really wanted it to mate with my M-45 which is mint too. I took my chances that it was something minor and sure enough the left channel was out when put to the test. I wiggled the balance and got the channel to cut in every once in a while, YES!!!! I got the deoxit out and sprayed and worked it for a while. I hooked it back and and to my surprise it's working perfectly! This preamp sound amazing. I can't tell much difference in SQ to my C2-A. Love it for the phono SQ running a denon MC cart. Wonderful! Paid 99.00. Happy camper!