Does the Topping L30 drive the Beyerdynamic DT 770 Pro 250?

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

Adequate

The Topping L30 adequately drives the Beyerdynamic DT 770 Pro 250 with limited margin (~8.9 dB headroom at 300 ohms; needs ~35.9 mW, delivers 280 mW).

Headroom
8.9 dB
Required (110 dB SPL)
35.9 mW
Delivered (@ 300 Ω)
280 mW
Required voltage
3.02 Vrms

Power Headroom

Headroom: 8.9 dB 0 · target 8.9 dB below target marginal adequate ample -14 dB +10 +20 +36 dB

Scale shows dB headroom above the 35.9 mW required to reach 110 dB SPL. Amp delivers 280 mW at 300 Ω (+8.9 dB above target).

Beyerdynamic DT 770 Pro 250 Dynamic · over-ear
Impedance (rated) 250 Ω
Impedance (measured) Source: reference-audio-analyzer.pro/en/r… 254.6 Ω measured
Sensitivity (rated) 96.0 dB/mW
Sensitivity (measured) 94.45 dB/mW measured
Driver Dynamic
Spec basis Measured
Measured by Reference Audio Analyzer (https://reference-audio-analyzer.pro/en/report/hp/beyerdynamic-dt-770-pro-250.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 ↗ Beyerdynamic DT 770 Pro 250 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.

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JDS Labs Atom Amp 2 Adequate 9.0 dB
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