Valhalla 2 is continuing to amaze me with each passing day. Listening to Eagles Hell Freezes Over album, the very well recorded "Hotel California" track. Using the HD650 at the moment and Valhalla 2 is laying down some serious bass lines. I would have never thought a SET amp could be so dynamic and so musical. Not just your round and bloated bass either, the bass is incredibly tight and as deep as much as the HD650 can muster but it is very well resolved at the same time. Very impressive for a triode SET.
A pure joy to listen to with any of my headphones.
