Does the Topping A90 drive the Philips SHP9500?

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

Ample

The Topping A90 drives the Philips SHP9500 with ample headroom (~24.0 dB headroom at 32 ohms; needs ~7.9 mW, delivers 2000 mW).

Headroom
24.0 dB
Required (110 dB SPL)
7.9 mW
Delivered (@ 32 Ω)
2000 mW
Required voltage
0.50 Vrms

Power Headroom

Headroom: 24.0 dB 0 · target 24.0 dB below target marginal adequate ample -14 dB +10 +20 +36 dB

Scale shows dB headroom above the 7.9 mW required to reach 110 dB SPL. Amp delivers 2000 mW at 32 Ω (+24.0 dB above target).

Philips SHP9500 Dynamic · over-ear
Impedance 32.0 Ω rated
Sensitivity 101.0 dB/mW rated
Driver Dynamic
Spec basis Rated
Rated: Philips official spec (32 Ω, 101 dB/mW). RAA has no measurement page. · Source ↗
Topping A90 Desktop Ss · Single Ended
Output impedance manufacturer 0.1 Ω
Power @ 32 Ω 2000 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 A90 SE output per multiple reviews citing manufacturer spec: 2000 mW @ 32 Ω (some sources say 3000 — using conservative 2000 mW), 250 mW @ 300 Ω. Balanced output is ~4× higher. 600 Ω derived from 300 Ω. · Source ↗

Where to buy

Topping A90 on Amazon ↗ Philips SHP9500 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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