Utterly bizarre note: I have been listening to my HE-6 from the Master 8 a lot recently, and as I was listening today I couldn't shake the feeling that something sounded wrong. The only concrete things I could figure out in terms of what was off was vocals sounded a bit 'cupped,' and the left channel seemed slightly recessed, where I didn't recall them sounding that way before. And although I still can't fully explain what the problem was, I did figure out what caused the issue, at least: I had the HE-6 plugged into the 4-pin XLR (no problem there) at the same time I had the LCD-2 plugged into the SE output. As soon as I unplugged the LCD-2, everything went right back to normal. Weird, huh?
I thought I'd read before that the M-8 would be able to drive multiple headphones at once without any problems, but my experience was different. Anybody else have a similar experience, or any idea why this happened? I had hoped to be able to have multiple headphones plugged in at once for a few inconsequential reasons (multiple friends could listen at once, be able to quickly and easily compare multiple headphones, and burn in several cans at once), so it's not going to be the end of the world, but it's worth noting.
I'd be interested in any light someone could shed on this!
Btw, thus far, the M-8 is an extremely impressive headphone amp, and an even better preamp... Wow!!