Sennheiser HD 660S2 Open Back Audiophile Headphones High

Description

Product Overview

The Sennheiser HD 660S2 wired over-ear headphones are engineered for audiophiles seeking natural, high-fidelity audio. These open-back headphones feature 38mm high-performance transducers built in Ireland, optimized for surround and diaphragm with a 300-ohm impedance voice coil. The frequency response ranges from 8 Hz to 41,500 Hz, ensuring detailed sound reproduction with extra sub-bass. Constructed with a steel mesh damping system that follows the driver’s geometry to control air displacement, and a magnetic yoke with milled air vents for optimal ventilation, these headphones minimize distortion. They come with detachable cables including 6.3mm and 4.4mm options, plus a 3.5mm adapter, all with a 1.8m length for comfortable desktop use. Included in the package are the headphones, cables, adapter, and a carry pouch for portability.

Usage

The HD 660S2 headphones are ideal for home listening environments, such as dedicated audio setups, studios, or quiet spaces where open-back design can excel without isolation concerns. They suit audiophiles, music producers, and enthusiasts who value accurate sound reproduction for genres like classical, jazz, and acoustic music. Their comfort and breathability make them perfect for extended sessions, whether for critical listening, mixing, or immersive entertainment. Avoid using them in noisy settings due to the open-back nature, which allows sound leakage and external noise intrusion.

Why Choose Us

Sennheiser’s HD 660S2 stands out for its precision engineering and heritage in audio excellence. Built in Ireland with rigorous quality control, these headphones offer a balanced sound signature that emphasizes clarity and natural tonality. The open-back design not only enhances comfort but also provides a spacious soundstage, rivaling higher-priced competitors. With detachable cables and durable materials, they ensure long-term reliability and customization, backed by Sennheiser’s reputation for innovation in transducer technology.

Key Features

• Natural, high-fidelity sound with enhanced sub-bass for immersive audio experiences
• Open-back design for exceptional breathability and comfort during long listening sessions
• 38mm high-performance transducers built in Ireland, minimizing distortion with advanced damping
• Wide frequency response from 8 Hz to 41,500 Hz for detailed sound across all ranges
• Detachable cables with 6.3mm, 4.4mm, and 3.5mm adapter options for versatile connectivity

FAQ

What is the impedance of the HD 660S2 headphones?

The headphones have a 300-ohm impedance, which may require a dedicated amplifier for optimal performance, especially with high-resolution audio sources.

Are these headphones suitable for outdoor use?

No, the open-back design allows sound to leak in and out, making them best for quiet indoor environments to avoid disturbing others or hearing external noise.

What cables are included with the headphones?

The package includes a 1.8m 6.3mm cable, a 1.8m 4.4mm cable, and a 6.3mm to 3.5mm adapter, providing flexibility for various audio equipment.

How do I clean and maintain the headphones?

Gently wipe the ear pads and headband with a soft, dry cloth. Avoid using liquids or harsh chemicals, and store them in the included carry pouch when not in use to prevent dust buildup.

Can I replace the ear pads if they wear out?

Yes, Sennheiser offers replacement ear pads and parts; check their official website or authorized dealers for compatible accessories to maintain comfort and performance.