I think I just bricked the headphone amp of the E1....I wondered if anyone here more tech-savvy than me can confirm that.
I bought two LME49710s (metal top) to put in the headphone amp section. After I put them in, there was a loud POP when I plugged my headphone in and there was only sound in the left channel. I opened the E1 again and remembered how I'd read that you need risers for one of the opamps and sure enough, one of them wasn't plugged all the way in. Stupid I know. So I replaced the stock 49720s but still the same result: loud pop and no sound in the left channel.
I may even have put the 49710s in with the wrong orientation (that little half-circle on the opamp indication direction or how you say it). Sigh.
Anyway, can anyone advise me whether I have killed the headphone amp here? I'm getting a couple of risers in the mail in a couple of days but I'm not so hopeful. At least the dac part of it still works.