This unit was just in for service, so it has brand new belts and the tape heads were thoroughly cleaned.

Deck A it a play only deck, while Deck B is a play/record deck. Recording functionality was not tested. Both decks play very well. The output level is slightly lower from Deck B for some reason, but the audio quality is still good and clean from both. According to the meter on the front of the unit, the left side on both decks seems to be a couple dB lower than the right side, but it's not noticeable in the output from the speakers and it could just be the tapes I'm using to test with.