Fishman BP100 Acoustic Upright Bass Pickup Stepping into the amplified arena of music performance can be as easy as installing a pickup on your current instrument. A piezo transducer responds to pressure on the instrument's bridge (either in the wing slot, under the bridge feet, or from within the bridge itself). This makes piezo pickups the optimal choice for bowed string instruments.
Easy installation with no alteration! Fishman's classic bridge-mounted dual element piezo-ceramic pickup installs in minutes and delivers deep sustained pizz.tone and fast articulation with emphasized direct string sound.
A Pro-EQ Platinum Bass, Pro-EQ II or BII preamp is recommended for use with the BP-100, but not required.
As an instructor once told me: before all else fails read the Manual - pdf
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