I agree the Carmel's are great with tube amps,but just as important is your sources down stream a great dac, player, and or turn table.they donot add any boxy colorations at all.
Your speaker cables ,interconnects,as well as powercords have just as much an impact.i am using Hegel SS amplification and sounds excellent
Especially for Rock and Roll, and jazz.I would like to mention to take a big Load off your smaller amp take a look at the powered SVS ultra 13 subwoofer for example and a Great value against JL audio.
Itis precision ,the articulation in bass adds to fundamentals all the way up to the midrange and just increases the enjoyment. I have worked in audio and have 35 years worth of trial and error these are Proven things that work
It is your choice if you choose to use them or not.