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Audiobot Notes
Peak SPL

123.3 dB

This was approximated from the source output at 32 Ω

Damping factor 320.0
Ultrasone PRO-550
Ultrasone PRO-550
Impedance 64 Ω
Efficiency 102.0 dB SPL/mW
Transducer Type Dynamic
Operating Principle Closed
Ear Coupling On-ear
Price History
Current $229.95
Highest $229.95
Lowest $199.95
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FiiO E11K / A3
FiiO E11K / A3
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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