I've stealthed my local orchestra with at831x's > wmod fw-410. I believe I was center third row, I might have even been in the first or second row, don't remember. anyway, they were fixed cards in a mesh hat, pretty much "binaural" or at least baffled, they were right above my ears. the sound was so much better than I expected, it was a hassle but it was worth it, even the dithered 16 -bit sounds onderful. DO IT. acoustic taping is so much more rewarding IMHO.