Thought it'd be better to explain my setup this way. Also, should I get a pre-amp? The amp I bought doesn't have Treble and Bass control but the pre-amp from the same company does. It also has 3.5 analog input and output so it's for active speakers or whatever. Okay, now for the Sound Blaster Z DDL and DTS encoding. The sound blaster Z DTS/Dolby encoding must be broken. I tried two different DAC's and each have its own problems when using DTS or Dolby Digital on the sound blaster z. My TV has DTS and Dolby passthrough and works fine with the two DAC's I bought so no problems with anything else that uses DDL and DTS. This one, the first one with DTS enabled I get distortion or snapping sounds when there's a lot of bass. Then when windows updated I started getting crackling and sound cutting out intermittently with DTS enabled. Dolby Digital was too quiet and had its own problems I can't explain. The second one which is very nice and also made by a U.S.-based company. DTS is quiet this time but not as quiet. There's also a loss of bass while using DTS. As for Dolby it actually sounds pretty good but when there's no sound I hear this snapping/crackling sound like dish soap bubbles are popping if you put your ear close enough to the bubbles Again, the DAC's work fine with the TV's DDL and DTS but not the Sound Blaster Z in my PC.