Do you need differential inputs as well? If not the R2X will "differate" an AVA analog preamp output better than anything else.
Yes I have an R2X I use when I want to play my old tube kit preamp and tube phono pre. Again it adds another set of single ended cables and potential for noise and coloration. I have a couple of turntables. One I have converted to XLR for use with a phono preamp with XLR in/out for LOMC cartridges. I also have a DAC with XLR output.
The thing is, since I committed to XLR connections from my preamp by purchasing the M750s (my old power amp had SE and XLR) I want to keep that signal intact from source to speakers. Unfortunately I cannot do that with an analog source with an AVA preamp.
I currently use a Schiit Kara preamp but an upgrade is on my radar.