Small form factor integrateds


Going back to looking for a small form factor integrated for a desktop placement of electronics running PC to USB. I know about Rega Brio, Heed Elixir and a used Bel Canto. Anyone ever compared any of these? The Bel Canto is I guess a Class D but reputed to sound excellent and high powered. It could be a multi use am which is why it made this list (plus costs about the same as the others used). Any comments on sound for these? Will be driving Spendor S3/5 on bookshelf in home office playing a wide spectrum of music. Thanks. 
joekapahulu
NAIM Atom…i am biased as i own one…..

Can grow with a system of excellent components as streamer and preamp…

https://systems.audiogon.com/systems/7100

have fun, enjoy !,,,
McIntosh MA252. I recently picked one up and it’s wonderful - compact and has more than enough power. If you are looking for tube sound I would also take a look at the rogue, raven, and primaluna offerings, all fairly compact but I believe all larger than the Mac, overall sound wise I found the McIntosh to work best for me. 

cheers 
I have 2 Benchmark AHB2 (12 inches wide) and a Topping pre90 and Topping D90se stuffed into an IKEA toy shelf. I use this system because it has as tiny form factor, it is super neutral, and sounds good. The Spendor's I have heard in the past were a little warm so I think this gear would sound good with it.