As we've previously noted, The Absolute Sound's Muse Kastanovich has had great success with our NRG-Z3 power cables, enjoying significantly improved performance from powered speakers.
And what about with power amplifiers?
After a couple days listening to the AGD Alto preamplifier and Tempo power amplifier, Kastanovich decided something sounded wrong, something needed to be changed. He explained:
I tried different interconnects—no improvement. Then I swapped out the AC cords for AudioQuest NRG-Z3. Wow, they sounded like completely different amps, much more like something worthy of coverage in TAS.