Hi Paul:
I tried the Gaincard with both a Sonic Frontiers Line-2, and a Bent Audio Noh, into the Royal Virtuosos. With both setups, there were many things that I liked about the Gaincard sound, but its' SS nature peeked through too often (though it was subtle).
At the time that I used those setups, I was using AP Oval 8 speaker wire and ICs. My CD player is a modified Sonic Frontiers SFCD-1, and my Universal player is a very modified Pioneer 47Ai. Also, I had an Oracle MkV TT/Rega 900/Goldring Excel VX combo.
Brian