I owned the A21 for four years and also became disenchanted, with it and a P7. I experimented with a few different options including NAD integrated amplifiers and finally ended up with an Adcom amp, the 555SE. It’s been a revelation for me, Adcom still makes a great amp.
a more open sound with detail in the highs and air that I never got with the A21 for some reason. I did get a Halo P5 though, and I’m happy with the combination.
a more open sound with detail in the highs and air that I never got with the A21 for some reason. I did get a Halo P5 though, and I’m happy with the combination.