Technics SH-AC500D (if you can find one, yes they're used) has four inputs (2c/2o), and can do AC-3 and DTS plus PCM. The Emotiva is the same 2c/2o. Either can be used with optical/coax converters where needed. Technics would cost less if you can find one. I know Yamaha made a similar component (doesn't likely do DTS though).
Check eBay, there's a lot of no-name Chinese imports that should also suit your needs, some of them will do AC-3 and/or DTS as well, most of them are relatively affordable, some have remotes.