Refresh/upgrade kit for the preamplifier module 9 in Bang & Olufsen Beocenter 9300.
This kit contains factory fresh high quality components to refresh and upgrade the sound reproduction of the preamplifier module.
WIMA foil capacitors and Elna Silmic II high quality audio grade capacitors will replace the original general purpose electrolytic capacitors in selected positions in the signal paths, and new operational amplifiers (OpAmps) based on Burr-Brown technology replaces the original OpAmp components.
The new OpAmps have far better specs, particularly with regards to signal/noise ratio.
This kit is suitable for preamplifier part# 8001673 (board markings 6142446D and 6142446E).
It may suit other versions with or without minor changes.
Basic electronic knowledge, tools and skills (ESD/SMD soldering) is required to replace the components in the kit.
A small amount of high quality solder is needed for this job. Go here to find it.