I have used the 71b for some time now and it is an excellent amp. If you want to power the HE 6 to the extreme and still be portable, but hear home sound, the Intruder does this.
I just received an Intruder to listen to and I hear excellent, I mean excellent transparency, micro detail and wonderful decay. I need some hours on this but I am a little taken back with the sound as I am so much impressed!
Edited by jamato8 - 10/22/12 at 11:41am