Also you are compairing a JBL Crown built amp to a korean made AQ amp. That JBL is a **** fine amp and does alot more then you probably are giving it credit for.
I know who you got that amp from and I am not taking sides but I have delt with him several times and always had a flawless transactions with that person.
Not bashing AQ I think they are pretty good for the money but that JBL has more behind it.
Maybe that amp just isnt working out for you because like alot of people are lead to believe or want to believe that non main stream amps seem to have some magical power behind them that main stream amps do not.
Personally I would have stayed with the JBL but to each is there own.