Harbeth SHL5 vs Dynaudio Special 25 vs...

I have a pair of SHL5 which I love it very much while playing the vocal, solo or piano. Regarding the bass, I am not so impressed (my previous speaker is Dunlavy SC-IV, the bass is better/powerful). I am not sure if this is position problem or how sensitive the speaker to the positioning or maybe because the AMP.

I am using DNA-1 deluxe as amp and I wonder what kind of AMP is good for SHL5? My budget will be 2-6,000 for the amp. Could you please share your experiences, thanks.

Drubin, thanks for the response. I use sound anchor stand and just found out if I put the blue pad between the stand and the speaker, the sound seems open up a bit.