Auzen Xfi Prelude 7.1 soundcard running 5.1 optical out from my PC to my full sized Marantz receiver. The Marantz is outputting Dolby Headphone through, naturally enough, the headphone jack, which is connected to the 02. Currently using DTT770 32 ohm with the 02.
This gives me excellent virtual surround sound with headphones for gaming. But ... I've noticed that bass can be distorted. Today I took the 02 out of the chain and just hooked my phones up to the Marantz ... no more bass distortion.
Any idea what is going on with the 02? I did not build it myself but bought it off of craigslist ... could there just be something wrong with it or wrong with the way I have it setup?