Many personal players do not provide quite enough volume to blast over wind noise or past earplugs. The Boostaroo can help. Plug it into the audio jack of your radio/scanner/whatever, then connect your helmet or earplug speakers. Voila, the sound level is increased by about a third. Input device volume adjustments remain functional, but everything tops at a greater volume. Clearly and cleanly, too. About a 12dB gain in a typical ear speaker. Two AA batteries (not included) last about 20 hours. There are two jacks so a passenger can listen along. 40mw per channel.
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