Hi Nick, That's interesting... I have used Aeris with the Rowland Criterion pre, and more recently directly into my Rowland M925 amps... I like both, with the former sounding a little softer, and the latter more resolving.... All together, I prefer Aeris directly into the amps, and have not experienced any loss of harmonic or microdynamic resolution at lower volume.
Guido
Guido