Too late to edit my post. I see you have a pair of small desktop all-in-one speakers. I have a pair of those on my desk. they are designed to be driven by a computer and use the computer for volume control. Indeed they have a smal DAC and amp inside them. But no, all you can add in front of them is volume control. I use them on my desk, mostly for phone calls, video, and occasional music. but even the fairly nice ones I have are pretty inferior to a real system.
Jerry