I have been using my DT770 250ohm for around a year now with a very old sony 5.1 receiver in my office but I don't think it's cutting it anymore. I am looking for a decent amp for around $200 (new or used) that has either a toslink connection and regular analog input (for my phono preamp) or two analog inputs.

My sources are an Airport Express via toslink and my cambridge audio phono preamp that goes to my Rega TT. Is there something out there that can be found at my price range? I am willing to spend a little more if it's necessary though. Thanks for the help.