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Audiobot Notes
Peak SPL

116.0 dB

This was approximated from the source output at 32 Ω

Damping factor
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 $139.99
Highest $229.95
Lowest $139.99
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Aune B1
Power Output 100 mW at 300 Ω
50 mW at 32 Ω
25 mW at 16 Ω
Frequency Range 10 - 20,000 Hz
Portable
Price History
Current $165.95
Highest $272.00
Lowest $165.95
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