Regarding my original comments:
Maybe I'm spoiled by having listened to the amps that fellow Berkeley Head-Fi'ers have, but after listening to amps like the Zana Deux, MPX SLAM SE, Dynamight, my old Dynahi--the Lavry's internal headphone amp (and I'm including the balanced output too) just doesn't sound that great to me. It's not bad by any stretch, but it's not particularly good either. It does the job decently, but it hardly lets me hear the real performance of the Lavry as a DAC-only device.
So to me, it doesn't make sense to get the Lavry just to use its own headphone amp, because that would be capping the performance of the Lavry's DAC section. I think of the Lavry as a DAC-first machine with the headamp thrown in, and I wouldn't use its own amp unless I had nothing else.