Does the Schiit Fulla 4 drive the Audeze LCD-X?

Computed from measured specifications · target SPL 110 dB · load 16 Ω

Ample

The Schiit Fulla 4 drives the Audeze LCD-X with ample headroom (~14.4 dB headroom at 16 ohms; needs ~11.0 mW, delivers 300 mW).

Headroom
14.4 dB
Required (110 dB SPL)
11.0 mW
Delivered (@ 16 Ω)
300 mW
Required voltage
0.46 Vrms

Power Headroom

Headroom: 14.4 dB 0 · target 14.4 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 300 mW at 16 Ω (+14.4 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 Fulla 4 Dac Amp · Single Ended
Output impedance manufacturer 0.5 Ω
Power @ 16 Ω 300 mW
Power @ 32 Ω 200 mW
Power @ 50 Ω 150 mW
Power @ 300 Ω 40 mW
Power @ 600 Ω 20 mW *est.
Power source Manufacturer
* Loads marked "est." are derived from the published voltage ceiling at a lower-impedance load (V = √(P·R) → P_higher = V²/R_higher). All derivations are upward only.
Schiit Fulla 4 manufacturer spec: 300/200/150/40 mW at 16/32/50/300 Ω. NOTE: prior project fixture used 400/300/220/40 — those figures match the Fulla 3 or an earlier revision; updated to Fulla 4 (current product). Output impedance from Schiit spec. · Source ↗
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

Schiit Fulla 4 on Amazon ↗ Audeze LCD-X on Amazon ↗

Disclosure: links above are Amazon affiliate links. As an Amazon Associate this site earns from qualifying purchases — at no extra cost to you. Affiliate commissions do not influence verdicts; all analysis is computed independently from the data.

AmplifierHeadroom
Schiit Lyr 3 Ample 27.4 dB
Schiit Asgard 3 Ample 26.6 dB
Topping A90 Ample 22.6 dB
Topping DX3 Pro+ Ample 22.2 dB
Little Dot MkII Adequate 9.6 dB
Apple USB-C to 3.5mm Adequate 4.5 dB

See all amplifiers for the Audeze LCD-X →

HeadphoneHeadroom
Grado SR80x Ample 18.3 dB
AKG K371 Ample 17.8 dB
HiFiMan Arya Adequate 8.0 dB
Sennheiser HD 800 S Adequate 7.6 dB
Beyerdynamic DT 770 Pro 250 Marginal 0.5 dB
Beyerdynamic DT 990 Pro Insufficient -0.6 dB

See all headphones for the Schiit Fulla 4 →