Does the Topping L30 drive the Grado SR80x?

Computed from measured specifications · target SPL 110 dB · load 32 Ω

Ample

The Topping L30 drives the Grado SR80x with ample headroom (~28.9 dB headroom at 32 ohms; needs ~3.0 mW, delivers 2300 mW).

Headroom
28.9 dB
Required (110 dB SPL)
3.0 mW
Delivered (@ 32 Ω)
2300 mW
Required voltage
0.34 Vrms

Power Headroom

Headroom: 28.9 dB 0 · target 28.9 dB below target marginal adequate ample -14 dB +10 +20 +36 dB

Scale shows dB headroom above the 3.0 mW required to reach 110 dB SPL. Amp delivers 2300 mW at 32 Ω (+28.9 dB above target).

Grado SR80x Dynamic · on-ear
Impedance (rated) 32 Ω
Impedance (measured) Source: reference-audio-analyzer.pro/en/r… 38.8 Ω measured
Sensitivity (rated) 99.8 dB/mW
Sensitivity (measured) 105.3 dB/mW measured
Driver Dynamic
Spec basis Measured
Measured by Reference Audio Analyzer (https://reference-audio-analyzer.pro/en/report/hp/grado-sr80x.php) · Source ↗
Topping L30 Desktop Ss · Single Ended
Output impedance manufacturer 0.1 Ω
Power @ 32 Ω 2300 mW
Power @ 300 Ω 280 mW
Power @ 600 Ω 140 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.
Manufacturer-rated: 2300 mW @ 32 Ω (The Headphone List review spec table, THD+N<0.1%), 280 mW @ 300 Ω (multiple sources). 600 Ω derived from 300 Ω voltage ceiling. Output impedance <0.1 Ω from manufacturer. · Source ↗

Where to buy

Topping L30 on Amazon ↗ Grado SR80x 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 33.1 dB
Schiit Asgard 3 Ample 30.7 dB
Topping DX3 Pro+ Ample 27.9 dB
FiiO K7 Ample 26.2 dB
Little Dot MkII Ample 15.3 dB
Apple USB-C to 3.5mm Ample 10.2 dB

See all amplifiers for the Grado SR80x →

HeadphoneHeadroom
Koss Porta Pro Ample 29.2 dB
AKG K371 Ample 28.4 dB
AKG K702 Ample 18.0 dB
Sennheiser HD 660S Ample 17.9 dB
Beyerdynamic DT 770 Pro 250 Adequate 8.9 dB
Beyerdynamic DT 990 Pro Adequate 7.8 dB

See all headphones for the Topping L30 →