DSP TO TAME THE BASS IN HARBETH SPEAKERS

DEQX

to tame the bass bloat in my Harbeths when driven by tube amps

What amplifier and what Harbeth? This might be solved in a simpler fashion!

You know, you don't need DSP per se for this.  The Schiit Loki would probably work for you too, without an A/D , D/A conversion step.

Proper room treatment though is always good. 

You need to see my other discussions for my complete set up - I've been through all the alternatives... and... have found the solutions.  At this point, I'm just wanting to know the best DSPs to resolve bass bloat (which is primarily the result of room issues and secondarily related to the more limited control by tube amps)....

I do have DSPeaker Antimode 2.0, which I’m going to try... but... thought there may be others, which may do a better job. And... I have no interest in any DSP which provides a DAC and preamp, as the DSPeaker does - I need neither of those. And I have no interest in room treatments.  All I need is a DSP with balanced XLR connections.