I had been using my Apex with the Butler amps and was very happy with bass response. It was clean, fast and pretty deep. The Apex were never lacking for bass but since I replaced my amps with Jolida 3000's (Response Audio Signature mod) the bass is INCREDIBLE!! It's like I added two very high quality subs. It's hard to believe the bass the 4 Extremis put out - clean, super deep when called for, fast, accurate - even at very low listening levels. I really couldn't ask for more. My room is small but has lots of treatments but MAN I guess I had forgotten what nice deep bass was like
I'm happy
