Last night I finally got around to swapping out the op amp in my DIY. I've never had the chance to hear the Muses01, so I installed it first. I get setup to listen, turn on the switch, and...no power other than a blinking blue light (which apparently means that something is wrong with the E12). I took the 01 out and put the AD797 back in; the amp is back to normal again. I repeated this another time just to make sure and got the same result. Any idea what's going on here? I'm almost 100% certain the Muses chips are legit; I did my homework before ordering, and they have all the hallmarks of a real chip. I paid regular going price, too (around $35 a piece for both an 01 and 02).