Band: opinion spread · Dot: weighted average
Far more usable than its predecessor, and the impedance multiplier is the reason. Into 300-ohm Sennheisers and ZMFs there is headroom to spare — owners sit at nine o'clock on the dial — and the multiplier lets a wide run of planars (Arya Stealth, Aeon Noire, Noire XO, LCD-2 Classic, even 15-ohm SJY planars) play cleanly, which OTL amps historically could not. The limits are real and consistently placed: the most current-hungry planars (Susvara, Tungsten, HE6) trip the protection circuit or simply sound short, and one owner of 420-ohm ADX5000s found it short of voltage at the very top of the impedance range. Schiit itself says the multiplier does not reach Magni territory.
“When it was turned on it was like a turbo mode came to life.”
Adydula · Head-Fi
“The Valhalla 3 is also perfectly happy driving all of my Hifiman planars (Arya Stealth, Sundara, and HE400i) with the impedance multiplier turned off.”
Dr. Cube · Head-Fi
“I purchased the Echo Vibe due to the V3 having too little power output to effectively drive my 420 ohm impedance headphones.”
NippleSauce · Head-Fi
“Also Susvara absolutely triggers the protection circuit almost instantly.”
Etroze86 · HifiGuides forum
Measured
Schiit rates 250 mW into 300 ohms without the multiplier and 750 mW into 32 ohms with it, both at 10% THD because it is a tube amp; gain is 1.25x (low), 6x (high) or 10x (no feedback). Output impedance is 25 ohms on low gain, 40 on high and 60 with no feedback, which is why a Sennheiser or ZMF sees a very different amp from a 32-ohm planar. The maker's FAQ states the multiplier still does not reach the output of its solid-state Magni, so very low-efficiency headphones are out.
vs. listeners — Owners with planars up to the Arya Stealth class describe the multiplier as transformative, while the Susvara/Tungsten class trips protection almost immediately — both are exactly where the published figures put the line. The one dissent at the top of the impedance range (ADX5000 at 420 ohms) was challenged on the same thread by a poster noting that nobody has complained about 600-ohm Beyerdynamics, so it may be that headphone's odd load rather than a general shortfall.
