I can only compare it to my old sr6012.
Sadly I haven’t had any free time since running Aud… what, like a week and a half back?

(The cost of my life as a freelance contractor.)
I’ve only listened to one test song, stereo. Solid performance.
In discussion with the Dealer I ordered from, the biggest improvement is in processing power. Certainly the DACs are solid and overall design is well done. He commented that he likes the mechanical layout of the AV20 over the AV10 because or is more symmetrical.
If it interests you, there is a user over at AH that just installed his AV10. He is a bit of a card but he really knows his stuff. Here is his input:
I started the installation Saturday afternoon, three and a half days ago. This was in many ways a formidable undertaking to mount this unit in a 19" rack. This unit is not specifically designed for 19" rack mounting. However third parties have rack mounts available. This is all complicated...
forums.audioholics.com
Beyond anything else, as it regards my setup, I am definitely impressed with it, even though I’ve not had a chance to sit and listen.