I've had an RP7 (driving a Stereo 100 power) for almost a year now. It's dead quiet, very dynamic, and responds well to tube rolling. The stock JJ 12 AU7s aren't anything to write home about, and I've gone through a bunch of rolls, I've settled on RCA black plate 5814As as main, and Tung Sol black glass as followers. I find the RP7 to be utterly non fatiguing, and any "color" added is due to tube choice. I like a BIT of color.
Anyway, the RP7 is quite versatile. I use the processor out for a Schiit Loki for nighttime listening/low level bass boost when needed. The fixed out goes to my headphone amp (sounds better than the built in). The variable outs go to my subwoofers. Connection from my phono pre and DAC are balanced, and out to the power amp is balanced as well. I use the HT bypass from my AV receiver as well. Many options. I'm very pleased, and for me, this is an endgame preamp. The RP7 leaves me sonically wanting nothing, as least not overtly. Sorry I'm not much help as I've never used a Primaluna.
Anyway, the RP7 is quite versatile. I use the processor out for a Schiit Loki for nighttime listening/low level bass boost when needed. The fixed out goes to my headphone amp (sounds better than the built in). The variable outs go to my subwoofers. Connection from my phono pre and DAC are balanced, and out to the power amp is balanced as well. I use the HT bypass from my AV receiver as well. Many options. I'm very pleased, and for me, this is an endgame preamp. The RP7 leaves me sonically wanting nothing, as least not overtly. Sorry I'm not much help as I've never used a Primaluna.