![Sadowsky Onboard Bass Preamp 4-Knob Item # SAC ELE ONBOARD BP4K](http://wcmusicstore.com/cdn/shop/products/SAC_ELE_ONBOARD_BP4K_01_2_1024x1024_2x_9e07cbcf-0e77-4aa7-956c-4b0471c3283c_{width}x.jpg?v=1681854316)
Sadowsky Onboard Bass Preamp 4-Knob Item # SAC ELE ONBOARD BP4K
The Sadowsky Onboard Bass Preamp (4-Knob System) is a completely prewired system offering the same controls and the same legendary active preamp as all Sadowsky basses. This preamp is designed for installation on most J-style basses with a metal control plate.