Does the Topping DX3 Pro+ drive the HiFiMan Sundara?

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

Ample

The Topping DX3 Pro+ drives the HiFiMan Sundara with ample headroom (~15.2 dB headroom at 32 ohms; needs ~54.3 mW, delivers 1800 mW).

Headroom
15.2 dB
Required (110 dB SPL)
54.3 mW
Delivered (@ 32 Ω)
1800 mW
Required voltage
1.46 Vrms

Power Headroom

Headroom: 15.2 dB 0 · target 15.2 dB below target marginal adequate ample -14 dB +10 +20 +36 dB

Scale shows dB headroom above the 54.3 mW required to reach 110 dB SPL. Amp delivers 1800 mW at 32 Ω (+15.2 dB above target).

HiFiMan Sundara Planar · over-ear
Impedance (rated) 37 Ω
Impedance (measured) Source: reference-audio-analyzer.pro/en/r… 39.25 Ω measured
Sensitivity (rated) 94.0 dB/mW
Sensitivity (measured) 92.65 dB/mW measured
Driver Planar
Spec basis Measured
Measured by Reference Audio Analyzer (https://reference-audio-analyzer.pro/en/report/hp/hifiman-sundara.php) · Source ↗
Topping DX3 Pro+ Dac Amp · Single Ended
Output impedance manufacturer 0.1 Ω
Power @ 32 Ω 1800 mW
Power @ 300 Ω 250 mW
Power @ 600 Ω 125 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.
Topping DX3 Pro+ SE headphone output: 1800 mW @ 32 Ω, 250 mW @ 300 Ω (from Topping official spec). Output impedance <0.1 Ω. 600 Ω derived from 300 Ω. · 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

Topping DX3 Pro+ on Amazon ↗ HiFiMan Sundara 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 20.4 dB
Schiit Asgard 3 Ample 18.1 dB
Drop THX AAA 789 Ample 15.2 dB
FiiO K7 Ample 13.5 dB
Little Dot MkII Marginal 2.7 dB
Apple USB-C to 3.5mm Insufficient -2.4 dB

See all amplifiers for the HiFiMan Sundara →

HeadphoneHeadroom
Koss Porta Pro Ample 28.2 dB
Grado SR80x Ample 27.9 dB
HiFiMan Arya Ample 17.5 dB
Sennheiser HD 660S Ample 17.4 dB
Beyerdynamic DT 770 Pro 250 Adequate 8.4 dB
Beyerdynamic DT 990 Pro Adequate 7.3 dB

See all headphones for the Topping DX3 Pro+ →