SKU: 700240

Sennheiser HD 660S2 Open-Back Headphones | 700240

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Sennheiser HD 660S2 Open-Back Headphones — product view
Sennheiser HD 660S2 Open-Back Headphones — hero three-quarter view
Sennheiser HD 660S2 Open-Back Headphones — side view
Sennheiser HD 660S2 Open-Back Headphones — front view
Sennheiser HD 660S2 Open-Back Headphones — exploded componentry view
Sennheiser HD 660S2 Open-Back Headphones — copper accent close-up
Sennheiser HD 660S2 Open-Back Headphones — lifestyle shot
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Sennheiser HD 660S2 Open-Back Headphones — product view
Sennheiser HD 660S2 Open-Back Headphones — hero three-quarter view
Sennheiser HD 660S2 Open-Back Headphones — side view
Sennheiser HD 660S2 Open-Back Headphones — front view
Sennheiser HD 660S2 Open-Back Headphones — exploded componentry view
Sennheiser HD 660S2 Open-Back Headphones — copper accent close-up
Sennheiser HD 660S2 Open-Back Headphones — lifestyle shot
Sennheiser HD 660S2 Open-Back Headphones — product view
Sennheiser HD 660S2 Open-Back Headphones — hero three-quarter view
Sennheiser HD 660S2 Open-Back Headphones — side view
Sennheiser HD 660S2 Open-Back Headphones — front view
Sennheiser HD 660S2 Open-Back Headphones — exploded componentry view
Sennheiser HD 660S2 Open-Back Headphones — copper accent close-up
Sennheiser HD 660S2 Open-Back Headphones — lifestyle shot
Over-Ear Type The headphone style, such as over-ear, on-ear or true wireless earbuds.
4.4 mm cable Connection How the headphones connect to your device, wireless or wired.

At a glance

Acoustic Design Open-back over-ear
Frequency Response 8 Hz to 41.5 kHz
Impedance 300 ohms
Balanced Connection 4.4 mm cable
Unbalanced Connection 6.35 mm cable
Adapter 6.35 mm to 3.5 mm adapter

Open-back at 300 ohms, with a balanced cable included

Open-back at 300 ohms, with a balanced cable included. The HD 660S2 Open-Back Headphones is designed for longer listening sessions, where comfort, connection stability and the way outside noise is handled matter just as much as the headline audio specification. The listening options include 300 ohms, giving you more control over how much of the outside world comes through. The HD 660S2 Open-Back Headphones is therefore best matched to the listening routine you already have rather than chosen on one headline feature alone. One detail to note on the HD 660S2 Open-Back Headphones is unbalanced connection: 6.35 mm cable.

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€599.00
€605.99 with delivery · Fast Nationwide Delivery · Manufacturer Warranty
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At a glance

Acoustic Design Open-back over-ear
Frequency Response 8 Hz to 41.5 kHz
Impedance 300 ohms
Balanced Connection 4.4 mm cable
Unbalanced Connection 6.35 mm cable
Adapter 6.35 mm to 3.5 mm adapter
Over-Ear Type The headphone style, such as over-ear, on-ear or true wireless earbuds.
4.4 mm cable Connection How the headphones connect to your device, wireless or wired.

Open-back at 300 ohms, with a balanced cable included

Open-back at 300 ohms, with a balanced cable included. The HD 660S2 Open-Back Headphones is designed for longer listening sessions, where comfort, connection stability and the way outside noise is handled matter just as much as the headline audio specification. The listening options include 300 ohms, giving you more control over how much of the outside world comes through. The HD 660S2 Open-Back Headphones is therefore best matched to the listening routine you already have rather than chosen on one headline feature alone. One detail to note on the HD 660S2 Open-Back Headphones is unbalanced connection: 6.35 mm cable.

Read full description

The Sennheiser HD 660S2 Open-Back Headphones is designed for everyday listening, calls and time on the move, with the core audio and comfort features easy to compare.

The HD 660S2 covers 8 Hz to 41.5 kHz, with a deliberate emphasis on low-frequency extension compared with the model it succeeds.

At 300 ohms it expects an amplifier, and both 4.4 mm balanced and 6.35 mm unbalanced cables are supplied, along with a 6.35 mm to 3.5 mm adapter.

It is a natural fit for commuting, walks, study and everyday calls where comfort and easy connectivity matter as much as sound.

Key features

  • Acoustic Design: Open-back over-ear
  • Frequency Response: 8 Hz to 41.5 kHz
  • Impedance: 300 ohms
  • Balanced Connection: 4.4 mm cable
Acoustic Design
Open-back over-ear
Frequency Response
8 Hz to 41.5 kHz
Impedance
300 ohms
Balanced Connection
4.4 mm cable
Unbalanced Connection
6.35 mm cable
Adapter
6.35 mm to 3.5 mm adapter

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