Looking a for a max $600 amp/dac combo with preferably small footprint. SE, balance isn't necessary, budget can go up a little if needed. Trying to downsize my current setup. Headphones would include dt1990 hd800 (might sell) and honestly trying to downsize in general. Wouldn't mind going back...

Alright. I'm just confused about the digital filter settings. I emailed them and got even more confused. So on there website it looks like this Opened up my nfb-28 and looks like https://imgur.com/a/yC2upEG That pic shows mine as a 5 pin. Same as audio-gd website except the fir_2 is the 5th...