I'm a dealer for them and I run them in my daily driver. I'm running two of the 1400.1s strapped at a half ohm and they do not complain. Also, I just recently changed the front stage amps to a 125.4 bridged on a pair of Neo Pro 8s and two channels of a 60.4 on my 1" soft dome tweets.
Mid and high amps doing work:
I still have a lot of tuning to do on the front stage but having gone from an old school Diamond Audio D5 600.4 to the 125.4, I'm impressed with the output and clarity of the CT amp... It's definitely more powerful than the previous amp and SQ seems to be in there as well.