I think step #1 is to identify what you think the weaknesses of the Rowland are, and /or what you want further improved.
Honestly with out that its a crap shoot/
G
Honestly with out that its a crap shoot/
G
Preamps
I'm not unhappy with the Jeff Rowland Corus preamp, but I don't know what I don't know. I'm currently looking for a solid state preamp with HT bypass to compare to my Jeff Rowland Corus preamp. I would like suggestions below $15K new list price to listen to. I have a Jeff Rowland 625 S2 amplifier, Antipodes DS GT music server and Chord Dave DAC.