D'Agostino Progression pre-amp vs Audio Research Ref6SE


I want to replace my, still very good ARC Ref 5SE with the D'Agostino Progression pre-amp or the ARC Ref 6SE.
Is there anyone who did a comparison of these. 

I am not really interested in other brands. Thanks.


sequence56
Thanks gregm. Very interesting.
I use my current pre-amp with Krell Mono 400e, which is a very enjoyable combination.
My goal is to go eventually also with the Progression power amp.




As it happens, I did, recently. Empirically, I preferred the Progressionon all counts -- transients & dynamics, details, sense of phase correctness...
They drove a 10kHz input impedance power amp and we played classical music, orchestral & opera.

Not knowing your amp, I can't tell if you'll have similar results --or not. Regards