OP
if you want BASS , i highly suggest getting a used Pass Labs x150.5 or maybe even a used x150.8
This revelation came to me, as I cannot seem to drive my ATC scm 11v3 with authority with MONO AHB2, they sound great for most part with the ahb2, but I want to hear it with greater bass authority. well, my Pass X150.5 simply did that and it also gave me a lustful midrange That I learned to love
Yes, my XA-25 did not have the power to wing the atc. but the x150.5 did
good luck

