Hello Linkster, I don't know if this is going to help. Four years ago I had my dealer bring both the orginal Parsifal and the Radian HC to my house. The Parsifal had the advantage of being the easier of the 2 speakers to drive. My amp at that time was an ARCvt130. We set up the Parsifal first and spent a long time tweaking it to make it sound it's best. After about 2 and a half hours we plopped down the HC Radian and without even any dialing in of speaker placement it was a night and day difference. The Radian did everything quite a bit better! Image placement, soundstage transparency, speed of dynamic shifts, timbre of tone, you name it the list could go on and on. I have not heard the Encore version of the Parsifal and I've never heard the Opus. I've since upgraded from the Radian HC to the Eidolon. No two people hear it the same so please try to make the comparison for yourself and trust your own ears. To most people this is a lot of money we are talking about and you need to be happy with what speaker you choose to buy. All the best, Tom
