SPL Chart
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Use the chart below to calculate amplifier power required (mW) to reach a desired listening volume (dB) with your headphones. Be sure to observe amplifier output power at your headphone's published impedance specification (ohms)!
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Listening Volume
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Your Headphone Sensitivity (db/mW)
90 dB
95 dB
100 dB
105 dB
110 dB
112.5 dB
115 dB
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826.31019.95363.096199.526630.9571122.0191995.262
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835.01215.84950.119158.489501.187891.2511584.893
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843.98112.58939.811125.893398.107707.9461258.925
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853.16210.00031.623100.000316.228562.3411000.000
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862.5127.94325.11979.433251.189446.684794.328
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871.9956.31019.95363.096199.526354.813630.957
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881.5855.01215.84950.119158.489281.838501.187
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891.2593.98112.58939.811125.893223.872398.107
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901.0003.16210.00031.623100.000177.828316.228
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910.7942.5127.94325.11979.433141.254251.189
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920.6311.9956.31019.95363.096112.202199.526
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930.5011.5855.01215.84950.11989.125158.489
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940.3981.2593.98112.58939.81170.795125.893
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950.3161.0003.16210.00031.62356.234100.000
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960.2510.7942.5127.94325.11944.66879.433
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970.2000.6311.9956.31019.95335.48163.096
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980.1590.5011.5855.01215.84928.18450.119
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990.1260.3981.2593.98112.58922.38739.811
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1000.1000.3161.0003.16210.00017.78331.623
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1010.0790.2510.7942.5127.94314.12525.119
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1020.0630.2000.6311.9956.31011.22019.953
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1030.0500.1590.5011.5855.0128.91315.849
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1040.0400.1260.3981.2593.9817.08012.589
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1050.0320.1000.3161.0003.1625.62310.000
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1060.0250.0790.2510.7942.5124.4677.943
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1070.0200.0630.2000.6311.9953.5486.310
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1080.0160.0500.1590.5011.5852.8185.012
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1090.0130.0400.1260.3981.2592.2393.981
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1100.0100.0320.1000.3161.0001.7783.162
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1110.0080.0250.0790.2510.7941.4132.512
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1120.0060.0200.0630.2000.6311.1221.995
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1130.0050.0160.0500.1590.5010.8911.585
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1140.0040.0130.0400.1260.3980.7081.259
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1150.0030.0100.0320.1000.3160.5621.000
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1160.0030.0080.0250.0790.2510.4470.794
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1170.0020.0060.0200.0630.2000.3550.631
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1180.0020.0050.0160.0500.1590.2820.501
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1190.00130.0040.01260.03980.12590.22390.3981
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1200.0010.00320.010.03160.10.17780.3162
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SPL Chart
Hearing Chart
Convert dB/V to dB/mW
JDS Labs Amplifier Specifications