So I have a mini hi-fi all in one thingy and a pair of bookshelf speakers, bought new a few years ago to replace a second hand system that I'd put together cheaply. It is ideal in that is takes up little room, plays CDs, had a turntable plugged in and has DAB, and the speakers are decent Q Acoustics ones, but the bass is a little lacking.
The unit is a Denon RCD-M41DAB and the speakers are 3010i's, there is a Sub out, so I was considering getting a powered sub to sit under the sideboard it lives on, and my questions are: what should I be looking for? I don't want it to be so powerful that even on the lowest setting you can feel it, it needs to be fairly compact too - was looking at the Q Acoustics 3070S as I like them and it seems nice and compact, obviously I don't need to power the speakers off it, or is that a better solution?
TIA!