DAC for 300-400 $

I have Prodigy HD2 DE, and soon will have Senheiser 650 with some AMP. Do I need a DAC to get considerable quality boost from prodigy hd2 in price <400$. I dont want spend my money for small benefits instead of my sound card, I need real another level of quality. My variants of dacs:

Shiit Bifrost
Emotiva XDA-1
HRT Streamer II+
ADCOM DAC

Or reccommend something other. I'd very like to listen people who have or had prodigy hd2 and upgraded it to normal DAC.