power amplifier through a conditioner

I currently am using an audio research d-60 amplifier that I have experimented with a power conditioner that I own. The power conditioner is a powerpack 2. I should also mention now that I am using a pair of thiel 1.5. I do notice significant better results now that I have some better equipment to use the conditioner with. However I have a really hard time deciding what I like better with the power amp. I notice that when I unplug it from the conditioner and plug it directly into the wall a wider soundstage appears. I do notice in a drawback that there is not pinpoint accuracy of instruments when it is plugged into the wall.

Wondering if anyone else who uses a power conditioner does not use their amplifier with it?

Does anyone else have the same results as I do?