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Audiobot Notes
Peak SPL

135.6 dB

Damping factor 64.0
Polk UltraFocus 8000
Polk UltraFocus 8000
Impedance 32 Ω
Efficiency 110.0 dB SPL/mW
Frequency Response 8 - 28,000 Hz
Transducer Type Dynamic
Operating Principle Closed
Ear Coupling On-ear
Additional Notes
Active noise cancellation
Price History
Current $350.00
Highest $582.59
Lowest $350.00
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Output Impedance 0.5 Ω
Power Output 40 mW at 300 Ω
230 mW at 50 Ω
360 mW at 32 Ω
550 mW at 16 Ω
Frequency Range 20 - 20,000 Hz
Portable
Price History
Current $99.00
Highest $99.00
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