Sennheiser HD 660S2 vs Denon AH-MM400 – Specs, Price & Comparison (2026)

ALERT

Sennheiser HD 660S2
Rs.54,990.00

Denon AH-MM400
Rs.49,500.00

Brand	Sennheiser	Denon
Model No	HD 660S2	AH-MM400
Wired / Wireless	Wired Headphone Specification	Wired Headphone Specification
Headphone Type	Over Ear	On Ear

Magnet Type	Dynamic	Neodymium
Driver Diameter	38 mm	40 mm
Impedance	300 ohm	32 Ohms
Sensitivity	104 dB SPL	96 dB/mW
Frequency Response	8 Hz -41500 Hz	10 Hz - 40,000Hz
Maximum Power Input	NA	1000 mW
Noise Cancelling	AMBIENT	Yes

Available Colors	Black	Brown
Connector Plating	3.5 mm	3.5 mm Gold Plated Jack
Cable	Tangle- Flat Cable	1.2 m
Weight	260 Gm	310 g
Other Features	Plush ear cushions and open design for maximum comfort. Outstanding quality designed in Germany, made in Ireland. Intimate sound with great timbre and deep, accurate sub bass. Uniquely powerful vented magnet system for minimized distortion. Ultra-light aluminium voice coil with 300-ohm impedance for excellent impulse response.	- Natural American Walnut Earcups Design - Aluminum Die-cast Hangers - Diaphragms with Free Edge and Neodymium Magnets - Contemporary European Design - Oxygen Free Copper Cables
	Compare Sennheiser HD 660S2 with: Sennheiser HD 700 Beyerdynamic DT 1770PRO Denon AH-D5200 Cleer Audio NEXT Beyerdynamic DT 1990 PRO MKII	Compare Denon AH-MM400 with: Audio Technica ATH-A1000Z Sony MDR-Z7M2 Beyerdynamic DT 1770 PRO Audio Technica ATH-E50 Beyerdynamic Xelento Remote

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