Was it extremely hot or humid when it happened?? I've had a few days where I seemed to get some overheating issues, but I think it may have been my DAC distorting...not my amp.
Why is my amp distorting?
I have a vintage McIntosh 240 that recently started distorting music. I've changed tubes, preamps, wires, line conditioners; no help. I've also taken it to a repair shop where it was scoped and given a clean bill of health. I've used this amp for about 4 years with no problems until now. And I know it's not some audiophile affliction because my wife also notices the strange sounds. I'm at a loss to know what to do next. Any suggestions as to the problem?