I find my system sounds the best with everything plugged into the 156. Tried removing my amp and the sound was nowhere as good. I also use the Groundmaster.
When I installed the 156 in the system (including monoblocks plugged into it) I immediately noticed an improvement, something that I had not experienced with any other unit. The one that I never tried but would have liked to, is the Inakustik.
the PSM156 is a critical device now in my setup. I tried plugging it in and out many times over and overall always prefered it with the PSM156 installed. The Soundstage clears up, feels more locked in and smoother overall.
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