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Audiobot Notes
Peak SPL

119.5 dB

This was approximated from the source output at 30 Ω

Damping factor 0.3

Headphones with higher impedances may be a better fit for this amp

Superlux HD-681
Superlux HD-681
Impedance 32 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 $31.54
Highest $44.95
Lowest $31.54
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Beyerdynamic A20
Beyerdynamic A20
Output Impedance 100.0 Ω
Power Output 100 mW at 600 Ω
170 mW at 250 Ω
150 mW at 30 Ω
Frequency Range 10 - 100,000 Hz
Price History
Current $360.46
Highest $749.00
Lowest $360.46
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