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Audiobot Notes
Peak SPL

120.1 dB

This was approximated from the source output at 50 Ω

Damping factor 4.0 and 16.0
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 $42.95
Highest $69.99
Lowest $42.95
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Schiit Valhalla 2
Type Tube
Output Impedance 3.5 Ω
14.0 Ω
Power Output 450 mW at 600 Ω
800 mW at 300 Ω
180 mW at 50 Ω
Frequency Range 20 - 20,000 Hz
Portable
Additional Notes
"Triode OTL headphone amp and preamp"
Price History
Current $389.00
Highest $389.00
Lowest
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