Sennheiser HD 660S2 Wired Audiophile Stereo Headphones

Sennheiser HD 660S2 – Available at OzTech Emporium in Australia

Legendary Audiophile Sound with Enhanced Bass

Precision Audio & Comfort

The Sennheiser HD 660S2 feature 38mm high-performance transducers with an ultra-light aluminum voice coil, delivering natural, balanced sound with extended sub-bass, precise mids, and smooth treble across an 8Hz–41.5kHz frequency range. Optimized airflow and a revised 300-ohm coil double the sound pressure at low frequencies (e.g., 27.5Hz piano notes or 45-60Hz bass drum kicks), retaining clarity without distortion (THD <0.04% at 1kHz, 100dB). The open-back design offers a spacious soundstage but leaks sound, unsuitable for noisy settings. Weighing 260g, the over-ear headphones include plush velour earpads and an ergonomic headband for comfort during long sessions, though some note mild warmth.

Connectivity & Compatibility

Equipped with detachable 1.8m cables (6.3mm unbalanced and 4.4mm balanced) with para-aramid reinforcement, the HD 660S2 connect to hi-fi systems, DACs, or amps. The 300-ohm impedance requires a robust source for optimal performance, though portable devices can drive them at moderate levels.

Build & Features

Designed in Germany and made in Ireland, the HD 660S2 feature a vented magnet system with steel mesh damping to minimize distortion and a 70Hz resonant frequency for enhanced bass response. The package includes a carry pouch, cables, and adapter, though some wish for a hard case. The open-back design and lightweight construction prioritize soundstage over noise isolation, ideal for quiet environments.

Buy at OzTech Emporium

OzTech Emporium offers the Sennheiser HD 660S2 in Australia, with stock varying due to high demand.

Why OzTech Emporium?

100% authentic Sennheiser devices with local warranty. Secure, rapid Australia-wide delivery. Expert customer service and after-sales support.

The Sennheiser HD 660S2 deliver reference-grade audio with deeper bass and exceptional clarity, perfect for audiophiles seeking an intimate listening experience. Grab yours at OzTech Emporium while available.