Boss Ce-300 Super Chorus
The Boss CE-300 Super Chorus is an analog chorus unit introduced in 1984.
The CE-300 uses a bucket-brigade design that's very similar to the famous chorus units of the Roland Juno series synthesizers. Although it was originally intended for guitar, it's great for warming up digital synthesizers and adding depth, width and shimmer to mono signals.
Upgrades & Modifications
Because the CE-300 was intended for use with guitars & amplifiers, it can be improved for use with line-level devices such as synthesizers by modifying its input impedance and output gain. See the following threads for more information:
Boss CE-300 Mods / Gearslutz / Backup (archive.org)
Restoring/Modding Boss CE-300 / Electro-Music / Backup (archive.org)
Service & Repair
Syntaur carries replacement parts for the CE-300.
More Info
Vintage Digital