Sadowsky Onboard Bass Preamp - 4-Knob System Active w/ VTC - BP4K 4-string-long-scale-flatwounds DBFS40100S - 4-String Set:

DBFS40100S - 4-String Set:

Taper-Wound E String

When installing a Sadowsky Onboard Preamp on a MetroExpress bass without a control plate (Modern

String Construction: Long Scale Plus - 34" - 35" - 36" Scale Basses - 38" Winding Length

Sadowsky Onboard Bass Preamp - 4-Knob System Active w/ VTC - BP4K 4-string-long-scale-flatwounds DBFS40100S - 4-String Set:Sadowsky Onboard Bass Preamp 4 Knob System Active w VTC The Sadowsky Onboard Bass Preamp 4 Knob System is a completely prewired system that offers the same controls and same legendary active preamp as all Sadowsky basses. This Sadowsky Onboard Preamp is designed for a simple drop in installation on most J Style basses with components mounted on the included metal control plate. On newer active J style basses with a side jack and a battery compartment