I recently bought this and paired it with my 2 hs8 speakers.
Nice bass, clean but it doesn't have the power to keep up with the hs8. Essentially, this is playing at full volume while the hs8 still have 30% more to give. So, you either keep the sound flat and natural at the maximum volume that the sub provides, or you turn up the hs8 to their maximum and lose the bass.

I should mention that the hs8 and the sub receive external DSP sound, so I tried it with every possible scenario you can imagine.

If the sub had 10 more watts, I would be talking about the perfect home studio setup. But it doesn't.