That's very generous of you, thanks. Why haven't you used it in a while? Don't enjoy it anymore, not as good pairing with your primary headphones compared to another of your amps? I am really considering it over the A18 now. All these cable upgrades are so tempting right now though but if I buy them all now (new LCD-2 cable, XLR and coax) I won't be able to afford an amp for at least a couple of months
IMO cables don't make that much difference anyway. Unless you're actually using, say, a true balanced system and running it through RCA only. You'd want XLR recabling in order to use the full potentials of the MK VI+ for instance, David wrote so himself in an email when I asked him a few questions about the amp.
The A18 however sounds great even with unbalanced. I'm running it balanced right now though since I sold my Signal RCA cables.