Onkyo TX-SR502- STEREO RECEIVER- works but for parts/repair

EVERYTHING on this receiver seems to work and it shows very little wear. The problem is the sound is slightly distorted. Can get very loud but it just does not sound right. Have no idea what the problem is.

Email your zip code for ship cost- should be between $9.95 and $24.95 if you are in the continental USA (listed Oct. 2012).