Does the Schiit Lyr 3 drive the Beyerdynamic DT 990 Pro?

Computed from measured specifications · target SPL 110 dB · load 300 Ω

Ample

The Schiit Lyr 3 drives the Beyerdynamic DT 990 Pro with ample headroom (~12.9 dB headroom at 300 ohms; needs ~46.2 mW, delivers 900 mW).

Headroom
12.9 dB
Required (110 dB SPL)
46.2 mW
Delivered (@ 300 Ω)
900 mW
Required voltage
3.52 Vrms

Power Headroom

Headroom: 12.9 dB 0 · target 12.9 dB below target marginal adequate ample -14 dB +10 +20 +36 dB

Scale shows dB headroom above the 46.2 mW required to reach 110 dB SPL. Amp delivers 900 mW at 300 Ω (+12.9 dB above target).

Beyerdynamic DT 990 Pro Dynamic · over-ear
Impedance (rated) 250 Ω
Impedance (measured) Source: reference-audio-analyzer.pro/en/r… 267.6 Ω measured
Sensitivity (rated) 96.0 dB/mW
Sensitivity (measured) 93.35 dB/mW measured
Driver Dynamic
Spec basis Measured
Measured by Reference Audio Analyzer (https://reference-audio-analyzer.pro/en/report/hp/beyerdynamic-dt-990-pro-250.php) · Source ↗
Schiit Lyr 3 Desktop Tube · Single Ended
Output impedance manufacturer 0.3 Ω
Power @ 32 Ω 6000 mW
Power @ 300 Ω 900 mW
Power @ 600 Ω 450 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 Lyr 3 manufacturer spec: 6000 mW @ 32 Ω, 900 mW @ 300 Ω per channel. Output impedance 0.3 Ω from Schiit spec. Hybrid tube topology (tube input stage, solid-state output). 600 Ω derived from 300 Ω. · Source ↗

Where to buy

Schiit Lyr 3 on Amazon ↗ Beyerdynamic DT 990 Pro 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 Valhalla 2 Ample 12.4 dB
Schiit Asgard 3 Ample 11.1 dB
Topping L30 Adequate 7.8 dB
Topping A90 Adequate 7.3 dB
iFi Zen DAC V2 Insufficient -1.1 dB
Apple USB-C to 3.5mm Insufficient -11.5 dB

See all amplifiers for the Beyerdynamic DT 990 Pro →

HeadphoneHeadroom
Koss Porta Pro Ample 33.4 dB
Grado SR80x Ample 33.1 dB
Sennheiser HD 660S Ample 23.0 dB
HiFiMan Arya Ample 22.7 dB
Audio-Technica ATH-R70x Ample 14.5 dB
Beyerdynamic DT 770 Pro 250 Ample 14.0 dB

See all headphones for the Schiit Lyr 3 →