I have the Behringer U-PHORIA 2 channel, great value. I use it when I want to mic something, recording both channels at once can be cool. I can't perceive any noticeable audio quality drop off running direct from my Fender Mustang I v.2. amp directly into Garageband. You have the option to set the playback device of your choice. You are not limited to listening to headphones through the amp. @ASATKat is blazing his own trail, which is also cool.