Hey Gonk looks like you are in the know! Is that 300W into 8 ohms? Holy shoot out!!! If so that means like 500w into 4 ohms. I am using Polk LSi speakers with a max rating of 250W into 4 ohms. The Polks are very inefficient but I think 500W would be too much. I really want to get the Outlaw 990 and an amp with balanced inputs to go with it.