Works great except for one small issue I didn't notice until I plugged the headphones into my system. At first I thought it seemed to me. While setting up another part of my system and in the headphones I noticed that I had unplugged one of the input cables. So I connected it. I thought I noticed that my stereo separation was reduced. I turned it off and indeed the stereo field expanded. It doesn't become monophonic, but changes the "soundstage" a bit. If you're really picky about your sound, you might want to just stick one channel in and maybe get a unit for the cover channel. Here's what I'm thinking about doing. Of course, that means you need two subwoofers.
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