Hey,
No amps on power conditioners. If you have a really nice preamp that stays off the conditioner too. If you don’t believe me then play three songs with your amp plugged into the conditioner. Then plug it right into the wall, wait three days, and play the same three songs. Only change this one thing. That way you know it’s the amp. I think the power conditioner can starve the amp and /or color the sound based on what technology it is using. During heavy lightning storms or when on vacation I unplug all of it.