Amplifier for Q acoustics concept 500

Hi to all.

I own the title’s speakers. I have paired them with harman kardon hk 990 but I don’t like the combination.

I tried a friend’s cambridge audio cxa80 and the result was much more pleasing, so pleasing that maybe I could live with it.

But I want to do better because I think these speakers deserve better amplification.

My budget is about 2.000 euros for second hand. I was thinking for cambridge audio 851a if its’ a step up from cxa80...since I already liked cxa80.

I could also find Hegel h190 and marantz pm-ki ruby for 2k and I wonder if they worth over Cambridge audio which is very transparent. One think I don’t like about harman kardon is that is has a bit dark presentation even its power is effortless. Pairing with cambridge audio, the speakers had very good bass extension as with hk 990 too, but sounded more airy compared to harman.

If someone owns these speakers and has a suggestion for which amp will suit them best I would appreciate it.

The source is a marantz tt15-s1 and I also use the internal hk 990 dac to listen from Spotify and macbook.

My primary concern is to find a suitable amp and then I can add an external dac and phono if they are not onboard.

Thank you in advance.