Vitor AX-S900 Integrated Amplifier I purchased this used about 7 or 8 years ago and have only used the PHONO, CD, and AUX inputs. I haven't been able to test the TUNER, TAPE, or headphone outputs due to my setup. Since I bought it, the left channel has had poor contact, and the volume is low. Sometimes, the left channel wouldn't produce sound. I would have to turn up the volume to get the left channel to work, then lower it to listen. When it was acting up, I would repeat this process several times until it stabilized. The MM position on the PHONO input works fine, but the MC position had poor contact, so I used an external MC transformer. There is crackling when switching between STEREO and MONO on the MODE knob. The TONE, BALANCE, CD DIRECT, GM SELECTOR, and Speaker 1/2 functions all work without issue. The side wood panels have chipped corners, which have been touched up with paint. I am satisfied with the sound quality, but please consider that this is an old product from the 1980s, with minor scratches, scuffs, and contact issues.