Headphonia made mention of the treble of the Valhalla:
"The Valhalla actually had a clearer sound with more sparkle in the low treble. It had a more solid state-like clarity and sparkle, but it’s not exactly dry sounding. It actually reminds me a lot of the sparkly treble in the Grace m902 amplifier section, which is a chip-based solid state headphone amp (I know, it’s totally unrelated, chip amps and tube amps). But I definitely won’t describe the Valhalla as having the traditional “tubey” sound. The Lyr has a thick lower mid-upper bass area, which progresses to a fairly lean treble section."
There was something similar in the 6moons review. I think everything that you said is spot on theory wise and was very helpful. I made mention of the treble characteristics as it is what swayed me in the direction of the Valhalla (650 and Valhalla sitting in a tree m-a-t-i-n-g). I hope I made the right choice and I will get mine tomorrow and see for myself. I appreciate the time you took to answer my question and it reinforced some things I knew and added perspective.
Sure, I'm glad you are getting one, particularly given the (IIRC) return policy... can't be disappointed either way. If by "sparkle" they mean extension, clarity, presence of treble detail, then we're fully in sync. That and midrange naturalness are what first struck me. I switched to the Fireflies and felt they were a bit foggy and relatively coarse.
FWIW, I feel both thanked and dismissed a bit ;-) because I'm usually as good as the reviews if I give it the time (was a reviewer at times myself), and I have listened to that combo a long time. The points I made were not from "theory" but an attempt to communicate in shorthand what I heard in a way that others might get a quick feel for. I have amps that switch from ultralinear to triode and find similar changes, so I relate to that. And I've had OTL amps (SA-4). So I appreciate the virtues but the slight limitations depending on pairing. Hope you enjoy!
Edited by Stoney - 5/2/14 at 9:49am