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Audiobot Notes
Peak SPL

118.4 dB

This was approximated from the source output at 32 Ω

Damping factor 186.7
Superlux HD-668B
Superlux HD-668B
Impedance 56 Ω
Efficiency 98.0 dB SPL/mW
Frequency Response 10 - 30,000 Hz
Transducer Type Dynamic
Operating Principle Open
Ear Coupling Over-ear
Price History
Current $42.13
Highest $69.99
Lowest $42.13
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FiiO Q1
FiiO Q1
Output Impedance 0.3 Ω
Power Output 75 mW at 150 Ω
190 mW at 32 Ω
Frequency Range 20 - 20,000 Hz
Portable
Price History
Current $124.39
Highest $124.39
Lowest $69.99
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