Headphones the Topping A90 Drives

Desktop Ss · Single Ended

Output impedance 0.1 Ω manufacturer
Output type Single Ended Desktop Ss
Power output 2000 mW @ 32 Ω 250 mW @ 300 Ω 125 mW @ 600 Ω*est.
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 ↗
27 ample 4 adequate

✓ Ample headroom 27

Headphone Headroom Damping Driver
Koss Porta Pro Ample 28.6 dB ✓ ok Dynamic
Grado SR80x Ample 28.3 dB ✓ ok Dynamic
AKG K371 Ample 27.8 dB ✓ ok Dynamic
Sennheiser HD 560S Ample 26.7 dB ✓ ok Dynamic
Sony MDR-7506 Ample 26.6 dB ✓ ok Dynamic
Meze 99 Classics Ample 26.0 dB ✓ ok Dynamic
Philips SHP9500 Ample 24.0 dB ✓ ok Dynamic
Audeze LCD-2 Classic Ample 24.0 dB ✓ ok Planar
Sennheiser HD 599 Ample 23.9 dB ✓ ok Dynamic
Audio-Technica ATH-M50x Ample 23.3 dB ✓ ok Dynamic
Focal Clear (original) Ample 23.1 dB ✓ ok Dynamic
Audio-Technica ATH-AD700X Ample 23.0 dB ✓ ok Dynamic
Audeze LCD-X Ample 22.6 dB ✓ ok Planar
Beyerdynamic DT 770 Pro 80 Ample 19.2 dB ✓ ok Dynamic
HiFiMan Arya Ample 18.0 dB ✓ ok Planar
AKG K702 Ample 17.4 dB ✓ ok Dynamic
Sennheiser HD 660S Ample 17.4 dB ✓ ok Dynamic
AKG K712 Pro Ample 15.9 dB ✓ ok Dynamic
HiFiMan Sundara Ample 15.7 dB ✓ ok Planar
Sennheiser HD 800 S Ample 15.6 dB ✓ ok Dynamic
HiFiMan Edition XS Ample 14.8 dB ✓ ok Planar
Sennheiser HD 600 Ample 14.5 dB ✓ ok Dynamic
Sennheiser HD 650 Ample 14.3 dB ✓ ok Dynamic
AKG K240 Studio Ample 14.0 dB ✓ ok Dynamic
Fostex T50RP Mk3 Ample 12.1 dB ✓ ok Planar
Drop + Sennheiser HD 6XX Ample 11.7 dB ✓ ok Dynamic
Beyerdynamic T1 (3rd Gen) Ample 11.0 dB ✓ ok Dynamic

◑ Adequate headroom 4

Headphone Headroom Damping Driver
Beyerdynamic DT 880 Pro Adequate 9.5 dB ✓ ok Dynamic
Audio-Technica ATH-R70x Adequate 9.0 dB ✓ ok Dynamic
Beyerdynamic DT 770 Pro 250 Adequate 8.4 dB ✓ ok Dynamic
Beyerdynamic DT 990 Pro Adequate 7.3 dB ✓ ok Dynamic