Sennheiser
HD 660S2
Introduced 2023$599 MSRP
Refresh of the HD 660S returning to a 300-ohm voice coil with a lower 70Hz resonant frequency for deeper bass extension in the classic HD 600-series chassis.
MSRP
$599
Used market · Excellent
$400est.
-33% vs MSRP
as of Aug 15, 2026MSRP to used market
From $599 at launch to $400 today (estimated).
Specifications
- Type
- open-back
- Driver
- dynamic
- Weight
- 260 g
- Impedance
- 300 Ω
- Sensitivity
- 104 dB
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