I have a PM6005 amp and a CD6005 CD player. The sound is too high on the right speaker and no sound on the left speaker. The volume won't turn down. When I turn the volume up some the sound from the left speaker comes on. I switched speaker wires to see if it was a speaker problem. Now the right speaker won't come on until the volume is turned up some, so it appears there is a problem with the left channel. The same thing happens with a FM tuner or anything else connected. It has been working fine for about a year and a half.