PMCH
Member
I can't comment on Aestheix's since I have never heard them. To me, the Crescendos sound great with the MC601's but they are the only amps I have tried them with. The bass seems very tight and clean to me. Of course everyone has different preferences. I did do many A&B tests directly between the 2 speakers in my system and definitely thought the bass with the Crescendos was better to my ears. The 601's may have more power than I need since I don't play at excessive volume levels, usually about 6 watts with a max of 60 watts. This was the same with the EB1i's though.