Thanks for posting Christian . I think this may have originally been used as a Headphone /Booster/EQ for a lap-top or ipod . But I think this add-on device can only be used on a Metal Detector that does not have a "Threshold adjust" ? Excellent topic !!
HH.....
...Eugene
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http://detectorx.com/koss-gain-amplifier-perfect-for-detecting-those-deep-whispers.html
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http://www.amazon.com/Koss-EQ50-3-Band-Stereo-Equalizer/dp/B00005UPF6
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http://www.thunting.com/smf/index.php/topic,7566.msg47200.html#msg47200
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« Last Edit: August 30, 2009, 09:35:27 pm by Eugene52 »
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