Let the hive mind of Engadget get that for you.
"I've found myself using my PC for a lot of conversations lately, and I'm also considering recording a podcast to share with anyone who will listen. There are tons of USB headset / microphones out there, and I'm hoping someone has some solid recommendations based on experience. I'll consider both headsets and standalone mics, by the way, but I'd like to keep the bill under $100 if possible. Help!"
Mark "No DTS.....No ac3??"
This means the DSM-750 can't decode these. It can still pass the coded stream to an AMP for decoding. Most people who want DTS or AC3 have an AMP (this decodes DTS/AC3 etc).