I do believe that sort of device is more geared for audio recording and its headphone amplifier is not as nice as a dedicated headphone dac/amp. I have the Steinburg UR22 usb audio interface for that sort of application as well as dedicated headphone amplifiers.
some of the cheaper balanced dac/amp options (dedicated for headphones) that I can aware:
- the the emotiva xda gen 2 ($299) & emotiva stealth dc-1 (hits a $450-$500 sales price point sometimes) but for both items, their headphone output is single-ended, so single-ended amplifier with balanced dac.
- matrix mini-i pro balanced dac with single-ended amplifier from $450-$520.
- audio-gd amp/dac combos w/ balanced outputs only: NFB-10.33 with WM9741 dac chip at $580 & NFB-28 with the Sabre ES9018 dac chip at $750.
- There was a recent pono sale at $250 which is a DAP with a balanced output (using x2 3.5mm minijacks). Not sure if that sale is still ongoing.
- The best priced balanced dac/amplifier all-in one unit with both single-ended and balanced outputs that I am aware of is the Oppo HA-1 which is $1,199. I am not really aware of any other more competitively priced combination units (except perhaps other offerings from audio-gd).
I think it will be hard to find a balanced amp/dac under $350 as it is already hard to find a dedicated balanced dac under $600.
Do note there is a bit of debate whether having balanced really makes a sonic difference. There are people that think that it's really just that the balanced output of amplifiers with both balanced and single-ended outputs have more power, but if you compare a well-designed 'audio-transparent' single-ended amplifier against a transparent balanced amplifier that both have enough power to drive your headphones with extra 'headroom,' the differences may be minimal. ymmv. also note that balanced cables will add significant cost to your set-up as well.