As more as you listen to this amp you will notice that HD-800 -stock cable -HDVD-800 is designed as a one complete unit.I had even to remove the toxic cable.
I have tested huge amount of amplifiers with HD-800 and wasn't fully satisfied with none of them.The HD-800 loves tube amps best are OTL designs.
What i hear now is that this complete unit trumps all of them.The sound is full like OTL designs and at the same time it's feather light with plenty of air.
This unit is honest to the tone, crap is crap and Guarnieri is as sweet as it should be.When you run this amp cold it put you in position of a spectator and
when warming up it drives you in.If you put hands on the amp it's only slightly warm.This unit performs much better than you expect it is cabable to blow you away .
Attributes wich describe the sound of HD-800 phone should be evaluated again with this combo, problems of sibilance or fake soundstaging are gone.I guess somebody at Sennheiser
got headache to get the amp to this level with HD-800 .This amp transforms the HD-800 headphone to a fun headphone and hifi attributes disappear in the background,this easyness or liquidity
keeps you listening to songs wich you normally skip over.