The Krell is ROON endpoint, a really cool feature. For about $1,200 you could get an SGC Sonic Transport i5 to host a ROON core, for a few more $$ doll it up with a LPS. Then for about $150 you subscribe to ROON for a Year. Totally fun few months ahead of you figuring out whether its something for you. If not you dump the SGC ST online and unsubscribe from ROON. Totally cheap way to find out of ROON with worth it. While you have ROON find a way to demo a streamer and run them head to head through the Krell.