Does the Schiit Valhalla 2 drive the HiFiMan Arya?

Computed from measured specifications · target SPL 110 dB · load 50 Ω

Verdict

Adequate OTL-compatible pairing

The Schiit Valhalla 2 adequately drives the HiFiMan Arya with limited margin (~7.5 dB headroom at 50 ohms; needs ~32.0 mW, delivers 180 mW). This OTL tube amp suits the headphone's impedance (28 Ω) — a classically compatible pairing for high-output-impedance tube sources.

Headroom
7.5 dB
Required (110 dB SPL)
32.0 mW
Delivered (@ 50 Ω)
180 mW
Required voltage
0.95 Vrms

Power Headroom

Headroom: 7.5 dB 0 · target 7.5 dB below target marginal adequate ample -14 dB +10 +20 +36 dB

Scale shows dB headroom above the 32.0 mW required to reach 110 dB SPL. Amp delivers 180 mW at 50 Ω (+7.5 dB above target).

HiFiMan Arya Planar · over-ear
Impedance (rated) 35 Ω
Impedance (measured) Source: reference-audio-analyzer.pro/en/r… 28.2 Ω measured
Sensitivity (rated) 90.0 dB/mW
Sensitivity (measured) 94.95 dB/mW measured
Driver Planar
Spec basis Measured
Measured by Reference Audio Analyzer (https://reference-audio-analyzer.pro/en/report/hp/hifiman-arya.php) · Source ↗
Schiit Valhalla 2 Desktop Tube · Single Ended
Output impedance manufacturer 14.0 Ω
Power @ 50 Ω 180 mW
Power @ 300 Ω 800 mW
Power @ 600 Ω 450 mW
Power source Manufacturer
Schiit Valhalla 2 manufacturer spec (Audiophonics retailer, citing Schiit official): 180/800/450 mW at 50/300/600 Ω. OTL/hybrid topology: more power into 300 Ω than 50 Ω (normal for OTL). Output impedance 14 Ω (hi-gain) / 3.5 Ω (lo-gain) from Schiit PDF manual and Schiit Europe. Using 14 Ω as worst-case for damping check. · Source ↗
Impedance compatibility

This OTL tube amp's high output impedance (14 Ω) is a good match for the HiFiMan Arya's 28 Ω impedance. The impedance ratio (2.0×) falls within the recommended range for high-output-impedance tube sources — a classically well-matched pairing.

Planar driver note

Planar-magnetic headphones can have high current demands that are not fully captured by the power headroom model. Even with adequate headroom, some solid-state amps may struggle to deliver sufficient peak current for transient dynamics. Prefer amps rated for low-impedance planars.

Where to buy

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Drop THX AAA 789 Ample 17.5 dB
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Little Dot MkII Adequate 5.0 dB
Apple USB-C to 3.5mm Insufficient -0.1 dB
HeadphoneHeadroom
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AKG K240 Studio Adequate 3.6 dB
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