Does the Schiit Valhalla 2 drive the Audeze LCD-X?

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

Verdict

Ample

The Schiit Valhalla 2 drives the Audeze LCD-X with ample headroom (~12.2 dB headroom at 50 ohms; needs ~11.0 mW, delivers 180 mW). Note: this OTL tube amp's high output impedance (14 Ω) interacts strongly with this low-impedance (19 Ω) headphone, which can audibly alter its tonal balance. OTL tube amps are best paired with high-impedance (250 Ω+) headphones; this is a less ideal match.

Headroom
12.2 dB
Required (110 dB SPL)
11.0 mW
Delivered (@ 50 Ω)
180 mW
Required voltage
0.46 Vrms

Power Headroom

Headroom: 12.2 dB 0 · target 12.2 dB below target marginal adequate ample -14 dB +10 +20 +36 dB

Scale shows dB headroom above the 11.0 mW required to reach 110 dB SPL. Amp delivers 180 mW at 50 Ω (+12.2 dB above target).

Audeze LCD-X Planar · over-ear
Impedance (rated) 20 Ω
Impedance (measured) Source: reference-audio-analyzer.pro/en/r… 19.45 Ω measured
Sensitivity (rated) 96.0 dB/mW
Sensitivity (measured) 99.6 dB/mW measured
Driver Planar
Spec basis Measured
Measured by Reference Audio Analyzer (https://reference-audio-analyzer.pro/en/report/hp/audeze-lcd-x.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 caution

This OTL tube amp's output impedance (14 Ω) is high relative to this headphone's 19 Ω impedance (ratio 1.4×). OTL tube amps are best paired with headphones ≥ 250 Ω; this combination may cause audible tonal coloration.

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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Little Dot MkII Adequate 9.6 dB
Apple USB-C to 3.5mm Adequate 4.5 dB
HeadphoneHeadroom
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