div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: Sadowsfy BASS PREAMP ASSEMBLY 4 KNOB Pull up on Tone Knob for true bypass of preamp The Sadowsky Onboard Bass Preamp 4 Knob System is designed for an installation on most J-bass src=https:reader030vdocumentinreader030viewer20220402125e8c007ce882845a5925b82bhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdiv