Emm Lab CDSA-Se vs Resolution Opus 21.

I also have the RA Opus. DIN output is not variable. It must be connected to a preamp. XLR and RCA outputs are variable and can be connected direct to amp/s.

To a typical amp you cannot run straight from DIN, as stated above. I think you can to the RW's adjustable gain, but I'd check with Vinnie just to be sure...FWIW, I did not think DIN was a significant improvement to the sound of the RA, the GNSC mods is a whole other ballgame with this player though. Takes it up a few notches in almost every way imaginable. A couple things I did find helped as well is the umbilical cable between the units (I use the Revelation Audio) and the PC (I use the DCCA Source) YMMV, but I thought these were both nice improvements, done after I had it modded by GNSC

Thanks again Arthur and Sammie.
I think it would work but I'll check with Vinnie. Arthur, my Opus has already been modded by GNSC ;-)
I just looked into the Revelation Audio umbilicale cable, uh, damn (gulp), how much of an improvememt did you perceive it to to the sound of your Opus? and did you hear the improvement pre mod or post mod? Did you think it worth the money?

Thanks again for sharing your knowledge.

Kindest regards,

John

Will the improvement from changing to DIN overcome the loss of removing the valhalla (synergy with valhlla speaker cables should be considered)?

I added the Revelation cable post-mods, it's not a profound change, but a nice lift to body and tonality, YMMV of course. If I had to pay retail for the cable, may out my money elsewhere, but that wasn't the case and I got to audition it as well. If you love your Valhalla, you know Steve at GNSC can bypass the analog volume which allows you to essentially get the benefits of the DIN connection, but use your rca IC's. You might give him a shout and discuss it with him.