Soundbar full digital amp

Hi,

So I am going to build myself a small soundbar for my monitor using two Markaudio Alpair 5.3 FR drivers (85dB sensitivity, 5W nominal, 3.4 Ohm according to spec sheet).

No issues with the box etc; where I am completely lost though is on the digital transport/DAC/amplification side of things.

As source I can offer up either USB passed from PC via monitor to soundbar, or 3.5mm jack out the back of monitor to soundbar.

Are there any simple all-in-one options out there that would accept audio over USB in, and drive these two cones? I'm not fussed re Bluetooth, and at this stage in the journey leaning towards mid-range quality vs. price (i.e. not no-holds-barred quality, and not bottom-of-the-barrel price).