Sadowsky Onboard Bass Preamp 4-knobs Chrome

Sadowsky Onboard Bass Preamp 4-knobs Chrome

[Sadowsky Onboard Bass Preamp 4-knobs Chrome]

Sadowsky Onboard Bass Preamp (4KS) – Professional Active Preamp for Jazz Bass

Bring the legendary Sadowsky tone to your bass guitar.
The Sadowsky Onboard Bass Preamp 4KS is a fully prewired active preamp system, designed to fit most Jazz Bass-style instruments. This is the same high-end preamp used in original Sadowsky basses – now available as a powerful upgrade for your own instrument.

Featuring an intuitive 4-knob layout — Master Volume, Pan (pickup blend), Vintage Tone Control (VTC), and a stacked Bass/Treble EQ — this preamp delivers punchy lows, crisp highs, and smooth dynamics. The passive VTC allows for vintage tonal shaping, while the active EQ provides clarity and enhanced articulation.

Features:

• ✅ Original Sadowsky preamp as found in Sadowsky basses

• ✅ 4-knob layout: Volume, Pan, VTC (Vintage Tone Control), Bass/Treble

• ✅ Active 9V-powered electronics

• ✅ Pre-installed on chrome control plate – fits most J-style basses

• ✅ Can also be rear-mounted (square or diamond pattern)

• ✅ Ideal for passive and modern Jazz Bass-style instruments

• ❗ Not compatible with active pickups requiring non-standard potentiometers

Technical specifications:

• Type: Active onboard preamp

• Power: 9V battery only (battery not included)

• Origin: Made in the USA

• Controls: Master Volume, Pan, Treble/Bass, Vintage Tone Control

• Mounting: Front or rear cavity installation

Why choose the Sadowsky Onboard Preamp?

Whether you're looking to revive your vintage Jazz Bass or upgrade your modern passive instrument, this onboard preamp gives you the clarity, headroom, and musicality Sadowsky is known for. Perfect for funk, jazz, fusion, or any genre where tone precision and versatility matter.