CanJam at RMAF 2012: Schiit Audio Valhalla Single-Ended OTL Headphone Amp
Schiit Audio Valhalla Single-Ended Triod OTL Headphone Amp ($349)
Jason Stoddard and Mike Moffat are long time audio industry professionals, and to my eyes and ears these guys have done Schiit right. The name is fun to play with, but the real value of their work is in producing very nicely designed products, inside and out, right here in the USA...at terrific prices.
Stoddard featured the Valhalla for me, a Class A, single-ended triode headphone amplifier with no overall feedback and noninverting circuit topology. It uses a pair of 6N1P tubes in the input stage, and a pair of 6N6P tubes in the output. Folks with headphones of about 100 Ohm impedance and above would be well served to give this little amp a listen. Those with low impedance headphones would be better served by the hybrid Lyr, the fully solid-state Asgard, or the balanced output Mjolnir.