Korg A4 Downloads
This page provides an archive for files that I produced and collected for a forum in Yahoo Groups that I moderated for nearly 20 years. The forum was dedicated to the Korg A4 series of effects processors and provided support for these.
The Korg A4 ‘guitar signal processor’ was first produced in 1992 as a multi-effects, floor pedal controlled unit with MIDI capabilities. Files relating to a version for bass guitar and also a budget A5 version can also be found here.
The battery is used to store user settings such as user defined sound patches. The original battery was capable of recharging when in use but the battery life of about 10-15 years (or more) could be reduced if the device was connected to the power adaptor and then turned on without the mains supply being connected.
From about 2002, requests for help with battery replacement were being received, mostly from forum members who had purchased used A4s. The first battery replacement involves opening the A4, de-soldering to remove the old battery and soldering in a new battery or battery holder.
This download consists of a compressed (zip) folder containing detailed instructions and images. The included ReadMe.txt file describes the folder’s contents.
The documents are in Adobe PDF format and a ReadMe.txt file describes the contents of the folder in more detail.
The patches can be edited using the A4 panel and so provide a variety of guitar sounds that users can use as a basis for their own patches. A ReadMe.txt file describes the contents of the folder in more detail.
A recording (from cassette tape) of one of the sets of patches being used in 1994 can be heard here.
The blue zip file image used on this page is provided by Free Icons PNG and may be used with credit to the source.