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Yamaha PRO 400
Impedance 23 Ω
Efficiency 106.0 dB SPL/mW
Frequency Response 20 - 20,000 Hz
Transducer Type Dynamic
Operating Principle Closed
Ear Coupling Over-ear
Weight 289 g
Additional Notes
"If music is your passion, Yamaha designed the PRO 400 headphones for you. They don’t merely deliver sound to your ears, they create the sensation of being there – in your favorite studio session, at an unforgettable concert, or lost in a universe that only exists in the artist’s mind."
Target SPL Requirements
Target Power Voltage
90.0 dB 0.03 mW 0.02 Vrms
92.5 dB 0.04 mW 0.03 Vrms
95.0 dB 0.08 mW 0.04 Vrms
97.5 dB 0.14 mW 0.06 Vrms
100.0 dB 0.25 mW 0.08 Vrms
102.5 dB 0.45 mW 0.1 Vrms
105.0 dB 0.79 mW 0.14 Vrms
107.5 dB 1.4 mW 0.18 Vrms
110.0 dB 2.5 mW 0.24 Vrms
Price History
Current $380.00
Highest $598.43
Lowest $380.00
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Model Peak SPL Portable Price
Schiit Magni Schiit Magni 126.2 dB $12.99
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Schiit Fulla 2 Schiit Fulla 2 131.8 dB $99.00
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