Power regeneration - good idea? PS audio?

@atmasphere I have Torus RM20 power conditioner, but I am not sure if P20 will lead to actual SQ improvement. I still hear a significant improvement in SQ late in the evening (with RM20). I am looking for conditioner/regenerator that will improve the day time sound to equal that of the night. I thought P20 was the answer until I read some mixed reviews on P20 on whether it is actually better than a good conditioner like Torus.

@chungjh I think you'll find that the P20 does a better job. The Tourus lacks active circuitry and if you look at their website you'll see that they don't have a spec for distortion on the output waveform.

FWIW, if you want to know if a given power conditioner will do you any good, just look at the distortion spec of the conditioned power. If you don't see one, that tells you that if there is distortion on the incoming power it will be there on the output as well.

A proper power conditioner will always have a distortion spec.

PSAudio specifies 0.5% for their P20.

I have the entry-level PS Audio P3 feeding my Class-D Rogue amp and my sources. I think it lowers noise floor and improves articulation. I listen to mostly acoustic and classical, so I find it worthwhile. Maybe not the most “bang for the buck” $1500 I ever spent, but I never considered returning it.

I talked to Torus and they say that noise <20kHZ is not filtered out. Regardless what the measurement says, I think the acid test is whether it sounds as good during the day as during the night.

Is there that much of a difference between 117 V and 121 V coming through your system?

That's about what my variation is throughout the day