Does the FiiO K7 drive the Sennheiser HD 600?

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

Ample

The FiiO K7 drives the Sennheiser HD 600 with ample headroom (~12.0 dB headroom at 300 ohms; needs ~8.9 mW, delivers 140 mW).

Headroom
12.0 dB
Required (110 dB SPL)
8.9 mW
Delivered (@ 300 Ω)
140 mW
Required voltage
1.77 Vrms

Power Headroom

Headroom: 12.0 dB 0 · target 12.0 dB below target marginal adequate ample -14 dB +10 +20 +36 dB

Scale shows dB headroom above the 8.9 mW required to reach 110 dB SPL. Amp delivers 140 mW at 300 Ω (+12.0 dB above target).

Sennheiser HD 600 Dynamic · over-ear
Impedance (rated) 300 Ω
Impedance (measured) Source: reference-audio-analyzer.pro/en/r… 352.1 Ω measured
Sensitivity 100.5 dB/mW measured
Driver Dynamic
Spec basis Measured
Measured by Reference Audio Analyzer (https://reference-audio-analyzer.pro/en/report/hp/sennheiser-hd-600.php) · Source ↗
FiiO K7 Dac Amp · Single Ended
Output impedance manufacturer 1.0 Ω
Power @ 32 Ω 1220 mW
Power @ 300 Ω 140 mW
Power @ 600 Ω 70 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.
FiiO K7 SE headphone output from manufacturer spec page (fiio.com/k7_parameters): L+R ≥ 1220 mW+1220 mW @ 32 Ω, L+R ≥ 140 mW+140 mW @ 300 Ω (THD+N<1%). Output impedance <1 Ω @ 32 Ω from manufacturer. 600 Ω derived from 300 Ω. · Source ↗

Where to buy

FiiO K7 on Amazon ↗ Sennheiser HD 600 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 20.0 dB
Schiit Valhalla 2 Ample 19.5 dB
JDS Labs Atom Amp 2 Ample 15.1 dB
Topping L30 Ample 15.0 dB
iFi Zen DAC V2 Adequate 6.1 dB
Apple USB-C to 3.5mm Insufficient -4.3 dB

See all amplifiers for the Sennheiser HD 600 →

HeadphoneHeadroom
Koss Porta Pro Ample 26.5 dB
Grado SR80x Ample 26.2 dB
HiFiMan Arya Ample 15.8 dB
AKG K702 Ample 15.2 dB
Beyerdynamic DT 770 Pro 250 Adequate 5.9 dB
Beyerdynamic DT 990 Pro Adequate 4.8 dB

See all headphones for the FiiO K7 →