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Sennheiser HD660S Headphones + Pro-Ject Pre Box S2 Digital Package


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Found it cheaper? Click here. SKU: SNH660S-PJCPBS2
Ex VAT: £532.50

RRP: £728.00


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RRP: £728.00


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Tech Specs

Sennheiser HD660S
- Transducer: Dynamic, open
- Impedance: 150Ω
- Connector: Stereo jack
- Unbal: gold-plated 6.35mm
- Other: 3-pin 4.4mm, bal 5-pin
- Freq resp: 10–41000Hz (-10dB)
- SP Level: 104dB @1V 1kHz
- Coupling: Over-ear (circumaural)
- THD + N: <0,04% (1kHz, 100 dB)
- Weight: 260g (without cable)


Pro-Ject Pre Box S2
- Dig In: Coax (S/PDIF), Optical (TOS), USB B
- DAC: 2x ESS9038Q2M 32-bit PCM 768kHz
- Headphone amplifier chip ESS9602
- MQA support: full MQA unfolding by hardware
- Frequency response: 20Hz - 20kHz
- Analog out: 6.3mm Headphone, Variable (RCA)
- Output voltage: 2.05 Veff
- Headphone output power: 68mW (32Ohms)
- THD: 0,0003%, Dynamic Range: 124dBA
- Power consumption: 5V, micro USB
- Dimensions (WHD): 103 x 36 x 103mm
- Weight: 600g w/o power supply

Product Description

A high performance headphone package bringing together the benefits of Sennheiser HD660S Headphones and Pro-Ject Pre Box S2 Digital pre and headphone amplifier.

Sennheiser HD660S

Sennheiser HD660S Headphones descend from the legendary HD 650, which feature an improved sonic performance with a new transducer design for the sophisticated audiophile that will perform in a large range of listening situations.

Pro-Ject Pre Box S2

Pro-Ject Pre Box S2 Digital Pre and Headphone Amplifier marks a new era for S-series components. For the very first time, Pro-Ject uses a dual mono configuration with the highest class D/A converters of ESS Sabre.

More Info

For more info, please visit our main Sennheiser HD660S page.
For more info, please visit our main Pre Box S2 Digital page.

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