Does the Drop THX AAA 789 drive the Drop + Sennheiser HD 6XX?

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

Ample

The Drop THX AAA 789 drives the Drop + Sennheiser HD 6XX with ample headroom (~10.8 dB headroom at 300 ohms; needs ~16.7 mW, delivers 200 mW).

Headroom
10.8 dB
Required (110 dB SPL)
16.7 mW
Delivered (@ 300 Ω)
200 mW
Required voltage
2.24 Vrms

Power Headroom

Headroom: 10.8 dB 0 · target 10.8 dB below target marginal adequate ample -14 dB +10 +20 +36 dB

Scale shows dB headroom above the 16.7 mW required to reach 110 dB SPL. Amp delivers 200 mW at 300 Ω (+10.8 dB above target).

Drop + Sennheiser HD 6XX Dynamic · over-ear
Impedance 300.0 Ω rated
Sensitivity 97.77 dB/mW rated
Driver Dynamic
Spec basis Rated low confidence
Electrically equivalent to Sennheiser HD 650 (same driver assembly). Rated specs derived from HD 650 manufacturer documentation. No RAA measurement page for this Drop collab. · Source ↗
Drop THX AAA 789 Desktop Ss · Single Ended
Output impedance manufacturer 0.1 Ω
Power @ 16 Ω 3000 mW
Power @ 32 Ω 1800 mW
Power @ 300 Ω 200 mW
Power @ 600 Ω 100 mW
Power source Manufacturer
Drop product page SE figures: 3000/1800/200/100 mW at 16/32/300/600 Ω. THX AAA topology, output impedance <0.1 Ω (class spec). · Source ↗
Headphone specification confidence: low

The headphone's rated specifications are from estimated or secondary sources. Measured figures (where present) are more reliable.

Where to buy

Drop THX AAA 789 on Amazon ↗ Drop + Sennheiser HD 6XX 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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