How's the analog volume control on the Opus 21?

Thank you guys for your informative responses. I think I'm sold. Tom, your test using your neighbor's preamp was especially helpful, and eases my hesitiation to buy a product that I am unable to demo. Yes, I'm aware Resolution Audio's use and return offer for 5%. I'm currently using a Cary 306/200 and a Rotel preamp. I'm eager to get the Opus 21 into my system based on all the positive posts. Fred

TIC-

I emailed Resolution Audio a week ago. They indicated that once I order, it'll take 1 month for me to receive the machine. Fred