It's preferred to have the impedance of the headphones be at least 8 times the impedance of the source your plugging the headphones into.
The E09K amplifier has a 10-Ohm impedance, which is fine for headphones that are 80-Ohms or more.
(I use 50-Ohm headphones on a 10-Ohm amplifier, which works fine for me)
The 62-Ohm Q701s should still sound good plugged into the E09K.
The E17 has a .5-Ohm impedance, so headphones that are 4-Ohms or higher is fine.
I would assume the E09K/E17 would be great for use with the Q701.
But as I have never used the Q701.
Might be best ask on this thread about amplifying the AKG Q701.