Hi Dj Nellie,
I agree 100%, the level of hiss is unacceptable for me too, and the volume is already too loud at the turn-on point with my JH5, JH11, JH13 and Triple.fi 10 PRO.
I know ALO Audio took 2 years to develop this amp and put a lot effort on it, but there is a great ammount of channel imbalance at low volumes with IEMs and I wish they fix it for future amps. I`m disaponted because It is expensive and I did not have those problemas with Alo RX MK1. I will live the MK3 for my Full sizes, and buy an RSA Mustang or Pico Slim to use with my customs.