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Audiobot Notes
Peak SPL

116.6 dB

This was approximated from the source output at 56 Ω

Damping factor 1875.0
Sennheiser HD 660 S
Sennheiser HD 660 S
Impedance 150 Ω
Efficiency 95.8 dB SPL/mW
Frequency Response 10 - 41,000 Hz
Transducer Type Dynamic
Operating Principle Open
Ear Coupling Over-ear
Weight 260 g
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Current $479.00
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Chord Hugo mobile DAC/headphone amp
Output Impedance 0.08 Ω
Power Output 35 mW at 600 Ω
70 mW at 300 Ω
320 mW at 56 Ω
600 mW at 32 Ω
720 mW at 8 Ω
Portable
Additional Notes
"Crucially, Hugo can be used as both a portable headphone amp/DAC as well as a reference-level standalone DAC in a static system. Hugo brings the renowned digital audio expertise of Rob Watts and Chord Electronics to serious headphone listening, enabling music lovers to experience a world of super-high-resolution music via their headphones or suitable loudspeakers. It offers unsurpassed performance and technology and is unrivaled in the marketplace, thanks to its bespoke technology, FPGA circuitry and advanced file-playback capability."
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