I have Apogee Slant-6. I had Adcom GFA 200, Classe CA 100, Krell KSA 50S previously, and use Conrad Johnson Premier 11A now. The CJ has more "you are there" and wholeness to the sound and expansive soundstage. Really musical and tactile. You can hear the vibration from the throat and the moistness of the teeth when listening to vocals. The best tweak was using RCA clear tops on the 6FQ7 driver tubes. My preamp is Wright Sound WPL 100A, his top of the line single chassis (with in board phono). I have one of three made. George Wright was from Kent, Washington. He died last year. His preamps are the biggest bang for the buck ever, if you can overlook the exterior aesthetics. This preamp replaced CJ PV 12A. the system sounds like it has a shot of 30 extra watts of power and drive, oomph, depth and clarity.
Since your speakers are fully ribbon, I would try the Classe CA 100. It is rated at 100 watts per channel at 8 ohms, 150 at 4 ohm. It is cheap on used market. It sounds way more musical than the expensive current crop of Classe amps. It has incredible bass, especially for its power rating. The amp sound and play twice as loud than a 200 watt (solid state) Audio Research amp.
Good Luck.
Greg
P.S. I am using JPS Labs superconductor interconnects. Very transparent, but very rigid. I heard at least 3 more feet of soundstage depth with these interconnects replacing the "junk" Straightwire Maestro.
Since your speakers are fully ribbon, I would try the Classe CA 100. It is rated at 100 watts per channel at 8 ohms, 150 at 4 ohm. It is cheap on used market. It sounds way more musical than the expensive current crop of Classe amps. It has incredible bass, especially for its power rating. The amp sound and play twice as loud than a 200 watt (solid state) Audio Research amp.
Good Luck.
Greg
P.S. I am using JPS Labs superconductor interconnects. Very transparent, but very rigid. I heard at least 3 more feet of soundstage depth with these interconnects replacing the "junk" Straightwire Maestro.