The Leslie external preamp that was developed to allow other than Hammond organ connections to a standard Leslie. This was an external rather largish stompbox affair that went between whatever instrument you played (guitar, keyboard, microphone, etc.) and a Leslie like a 122 or 147. This is missing in the Leslie setup.
For that matter I'd like to see a good 122 or 147 model Leslie with this keyboard. The one currently is weak at best with a too thin sound.
