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Audiobot Notes
Peak SPL

123.0 dB

This was approximated from the source output at 32 Ω

Damping factor 340.0
Superlux HD-661
Superlux HD-661
Impedance 68 Ω
Efficiency 102.0 dB SPL/mW
Frequency Response 10 - 20,000 Hz
Transducer Type Dynamic
Operating Principle Closed
Ear Coupling Over-ear
Price History
updated about 2 hours ago
Current $44.68
Highest $83.33
Lowest $44.68
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FiiO E11K / A3
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Output Impedance 0.2 Ω
Power Output 270 mW at 32 Ω
450 mW at 16 Ω
Frequency Range 20 - 20,000 Hz
Portable
Price History
Current $59.99
Highest $99.99
Lowest $59.99
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