Amp+Dac recommendations for Audio Tehcnica AD700

Hi all,

I recently bought an AD700 and i'm very happy with its soundstage and performance at high notes. Unfortunately, I'm using an onboard realtek soundcard. After few happy days, even with flac records thereafter some amplification i started to hear noise. I decided to buy a dac+amp unit with maximum budget of 200 $ . but suggestions up yo 250 dollars are OK. I usually listen jazz and classical if it's relevant for suggestions.
i'd like to clarify that i'm looking for a combo device not separate amp and dac.

Thanks.

Help Please ! I'd  be very glad  if somebody writes his personal opinion at least. I'm lost within all these brands and models.