I have not compared vs Spectron, but had PS Audio GCA 250 and W4S SX 500 monos. I now have a W4S MC 250/500. I just put a Tek Line Cable Reference power cord on it and am blown away. Also replaced a DH Labs Revelation with a PS Audio Transcendent Silver which warmed up the hi-freqs.
Meaning? W4S is cable sensitive!
Meaning? W4S is cable sensitive!