Thank you! Very interesting story...we are at 93db efficiency here and totally get that desire for a 'performance onstage feel' that you refer to. Actually, we rarely play that loudly except for action movies, but it sure is fun when you want to drive the volume knob a bit! And you are well on your way to a perceived doubling of loudness of that (10db I believe is perceived doubling vs technical doubling which is 3x). Enjoy! Would love to hear the Classic Audio References.Thank you. I had the McIntosh before the T1s. My analog tube journey started in a Germany where I was stationed. I had Octave Audio MRE 130 Mono amps with Super Black Box and Octave HP500 Special Edition preamp Driving B&W Nautilus 800s. Upgraded to the Octave Jubilee preamp, and that’s forever. Wonderful music, but not enough drive for me as I love to play loud. Returned to the U.S., sold the Octave MRE130 and bought the MC2301s to drive the B&W 800s. Great combo but inefficient speaker and age of drivers led me on a speaker hunt for several years. Listed extensively to Audio Physik DUOs, MBL 101s, and Sonus Faber while in Germany. Just did not seem to tick all the boxes for me. In the U.S, listened to Klipsch Jubilee, Klipschorn, Cornwalls, Legacy Audio Aeris, Tekton Ulfehrts, Spatial Audio, and a few more that I forget. At the Capital Audio Fest, I walked into the Classic Audio Listening room and heard the T1.5s....I knew they were it for me. Now, the pairing with Atmasphere amps seem to be what John Wolff demonstrates as he is also a dealer of Atmasphete, but they sound great together. When John delivered the speakers to my house, we fired up the system, and he was highly impressed by the combination. They exude all of the superlatives paired with the MC2301s as one would describe with the Atmaspheres. I play music loud, not just for gemutlich low level listening, I like to hear it rock the room. The pairing with the MC2301 gives that to me. Low level listening, well, if you want it, then play low and sit back and relax. I do that but find at 98db efficiency, I still love to play loud. The vocals and realism of voices are just incredible. This I felt when I first heard them and feel the same. I am addicted to listening to the system every night after work because I have a performance onstage in my room every time I play a record.