Thanks for replying Stillhart.
Having heard both I don't agree with that at all.
The Q701 has that AKG house sound.
The HD668b is a baby DT990pro Beyer with less clarity.
For people starting out that is why I always suggest HD668b. It is cheap, light, with great sound that impresses a lot of people that know little to nothing about headphone audio. It will make almost everything sound good and isn't overly picky about source. The cord is cheaper then hell to replace. They lose nothing by buying it. Along with the KSC75, and CAL! they are just great starter headphones. Lets them get a taste and form their own opinions on what they want out of a headphone.