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The MPD is special in its design. It has the compliments of the ( DSR ) digital electronic hearing protection device coupled with the single transducer of the PS-1 giving it the ability to allow the user to have a source at the same time as outside sound, protection from loud exposure, adjustable volume control for outside sound and the ability to hear ambient sound while having a source playing at the same time. This product reduces ambient sound by 29-32 dba and has a 2 year warranty. ( See Warranty page for details )

 Technical Specification for Single Driver:

Sensitivity @(1Khz) 114dB SPL

Impedance @(1Khz) 26 Ohm

Frequency Range 40Hz – 18Khz