Still listening to Breaking Bad OST BTW. Now that I know that a single Funk 18.0 can output 120dB from 50-125Hz (dual ~ 123dB), I am trying out 120Hz XO. So Pure Direct 2.2 + 120Hz XO. Sounds marvelous so I'll be retaining this 120Hz XO setting for now.
ATI makes amps for "most North American amp companies". I think also Earthquake Sound and Cinepro, although they have confidentiality agreement w/ ATI and will deny everything.
Keep in mind that ATI makes amps for each company per the company's specification. So power output, THD, SNR, ect, may vary.