Best amplifier for low to moderate listening levels

I think the reason it is hard to get an unambiguous answer is the dynamics are not strictly one component and different systems react differently. When I had solid state amps more power made a difference in impact… making them sound better at all volumes but they still sounded best in the high 70’s to 80’s.

If you like the character of the sound then I would not recommend switching to a solid state amp. The character will change too much. That is a really nice amp.

The volume at which my systems have sounded good over the last fifty years have continually dropped as my system has gotten better. My system now sounds the best it has at low levels (see my system).

If you were going to do one thing, I would definitely trade in and apply the $10K to new speakers. This will put you in a whole different category of speaker regardless of the actual choice. Secondly,I would recommend looking at dynamic… like Sonus Faber, or DyneAudio. These will give you solid bass and natural presentation at all volume. I have had various electrostatic and ribbon speakers over my life and while they haves strengths, they have many weaknesses. All my planar speakers required pretty high listening volumes.

The Pass Labs XA30.8 and other Class A amplifiers are distinctly a low volume sound quality leader- most likely because of the Class A topology.  Spectacular. 

The Parasound JC5 is also very good for low volume listening,  

Also depends on the quality and dynamics of your preamp.  

Which Rogue do you have?  

I recommend a very inexpensive add-on that may help you. The iFi Micro iTube 2.  It has a 2 level Xbass loudness switch and 3D Holograpghic matrix for designed for headphones and speakers. It's pre-amp that can be put in front of any amp or player.

Responding to a question from Avanti1960:

I  have the Rogue Audio RP-1 Vacuum Tube Preamplifier.

A little off track , but I’d like to make a suggestion. I have an RP-1 and it’s Rogues entry level pre. I tube rolled and settled on Tekefunken G73R 12AU7’s. I went with a nice aftermarket power cord and added isolation footers. I’ve also noticed that it takes 4-6 hours to sound its best. I have a tendency to leave it on 24-48 hours at a time. I’ve also inserted a Schiit Loki with good results. FWIW Ive tried 5 different brands of NOS 12AU7’s and THEY ALL bested the JJ’s. Look for a clean pair of standard Tekefunken smooth plates from a reputable dealer. If you’d like specific info PM me. This is a side note that would lend an improvement regardless of where you go with amp/speaker choice. Regards, Mike B.