Small Footprint (compact) amp to power speakers?


Hi all:

Looking for a small integrated amp to power a pair of Onix RS450 speakers.  Probably need 50W, at least.   I'll only be using it to stream to via Chromecast Audio.  

I've looked at the AudioEngine N22 but it doesn't have enough power. Even the NAD 3020 might not be enough.  Planning to spend under $500 used/new.  

Any suggestions?  I don't see many "compact" amps out there.  

Thanks.
soundchasr
You might find a used PS Audio Sprout100 in your price range or maybe a Rega Brio r.  If you can stretch a little there’s a NuPrime IDA-8 here now for $700.  Best of luck. 
The 2 suggestions above (Rega Brio and PS Audio Sprout) are both good options.  You could also look for a preowned Bel Canto C5i, but it would likely be in the $800 range price wise.
I would search for a "desktop" integrated amplifier. You'll find some great options from Marantz, Peachtree, etc. that may fall into your price range if you buy used. 
Check Underwood HiFi specials. Either a W4S integrated or their EP integrated
all the suggestions here are really great...but If you’re willing to go separates (or even straight out of a dac/pre) XTZ ice power amp has had great reviews and is only $500:

https://www.xtzsound.com/product/edge-a2-300



3rd Bel Canto.   Their integrated amps actually kind of kick ass.  No power concerns, and they also serve as great preamps when you have cash to upgrade.  Keep your eyes open for a good price on a used C5.  
Parasound Zpre3 and Zamp3 makes for a very nice little system. Used would probably fall into your budget. 
Nuforce STA200. 80w. Got it new for $500 as a backup amp from AudioAdvisor. Nice little solid state push/pull. If needed u can get a $49 2 input switch box from Schitt. 
Can't find a Bel Canto under $900, unfortunately.  

The XTZ Edge A2-300 looks interesting. Not a lot of info about it out there. @riccitone61 have you heard it?

The Yamaha WXA-50 has a lot going for it.  But can't find any right now.  I like the Musiccast app. Sits vertical!

The Cyrus looks a little too chunky for the space.