Aguilar OBP-3TK/PP Onboard Preamp
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<b>[Product Information]</b><br>
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<li>Includes separate Treble, Mid, and Bass pots. 
Mid pot is push/pull for Midrange frequency selection.</li>
<li>plus/minus 18dB bass at 40Hz</li>
<li>plus/minus 16 db of cut and boost at either 400Hz or 800 Hz</li>
<li>plus/minus 16 dB @ 6.5KHz</li>
<li>Battery life: 324 hours</li>
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<img src='http://ecx.images-amazon.com/images/I/318oWXU1RKL.jpg'></br>