From what you describe, it is NOT clipping.
IF it was clipping, it would occur no matter what source, and only at high volumes.
60 wpc/91db/6 0hm is a fairly easy combo unless going for a lot of volume, likely unpleasantly loud before clipping.
IF only TT, there you go, it's NOT the amp, NOT too little power.
You may want more power, have long thought more power would be nice/better, but don't let this problem go unsolved before moving up in power.
1. prior to alignment issues, check if you are sending too weak or too strong a signal to your preamp's input. what cartridge? what preamp?
2. TT arm/cartridge balance/alignment: how are your skills?
IF it was clipping, it would occur no matter what source, and only at high volumes.
60 wpc/91db/6 0hm is a fairly easy combo unless going for a lot of volume, likely unpleasantly loud before clipping.
IF only TT, there you go, it's NOT the amp, NOT too little power.
You may want more power, have long thought more power would be nice/better, but don't let this problem go unsolved before moving up in power.
1. prior to alignment issues, check if you are sending too weak or too strong a signal to your preamp's input. what cartridge? what preamp?
2. TT arm/cartridge balance/alignment: how are your skills?