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Audiobot Notes
Peak SPL

132.4 dB

Damping factor 320.0
PSB Speakers M4U 1 Headphone
PSB Speakers M4U 1 Headphone
Impedance 32 Ω
Efficiency 102.0 dB SPL/mW
Frequency Response 20 - 20,000 Hz
Transducer Type Dynamic
Operating Principle Open
Ear Coupling Over-ear
Weight 340 g
Price History
Current $129.00
Highest $284.01
Lowest $129.00
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Output Impedance 0.1 Ω
Power Output 140 mW at 600 Ω
505 mW at 150 Ω
1,100 mW at 32 Ω
Portable
Price History
Current $249.00
Highest $249.00
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