Your A-S501 will have higher quality preamp/poweramp sections and have higher sound quality than an equivalently priced receiver for 2 channel listening. I have had several entry level bottom of the barrel receivers in the past (Pioneer, Sony, Denon, etc) and they all sounded terrible for any dedicated music listening with a scrutinizing ear. AV Receivers start sounding real good and will have incredible features IME when it gets to the flagship level. Such sonic quality can be achieved with dedicated 2 channel gear at lower prices however. Bottom of the barrel receivers will have more features than dedicated 2 channel gear, but, will be heavily compromised on sound quality.
Keep in mind that this is a AV forum and for instance, the video/movie guys may not care as much for sound quality w.r.t dedicated 2 channel or multichannel music listening. They may be beating it to death with their Klipsches and be more focused on reference level SPLs and dynamics, but may not care to discern other intricacies with music listening. There are guys who'll insist every dac/preamp/poweramp etc out there sounds the same. They may have zero room treatment and insist that some room correction software will fix everything even if they are set up in the crappiest possible room. There are guys out there who won't hear a difference between your Elac speakers and some 100 dollar boombox. So, it's up to you and what your priorities are.
Here's a stereo amp that's very close to the A-S801 with some additional features: bass management, streaming and basic room correction...if you're looking for something that may be middle of the road w.r.t sound quality and features, i.e. doesn't compromise too much on either.
https://www.crutchfield.com/p_022RN803/Yamaha-R-N803.html?awcp=&awcr=309942927033&awdv=c&awkw=yamaha+r+n803&awmt=p&awnw=g&awug=9023847&gclid=Cj0KCQiA_c-OBhDFARIsAIFg3ezAlQaeBjmmkPpQGphrggWCVZmeMvMMyWkQgole2z2hLgGS0zY6qyQaAh3uEALw_wcB