To purchase a JamMan® upgraded with JamExpand technology or if you have a unit you would like upgraded, please email us for current pricing and availability. From time to time, we list upgraded units on eBay. Purchase(s) may be made via PayPal. The JamExpand™ is offered EXCLUSIVELY by Signal Technology Labs.  

Video demonstration clips available here.

JamExpand MIDI Commands


Note: Midi programming with a range of 1 to 128 is described in these tables. If you are programming using Midi code range 0 to 127 subtract 1 from the numbers in this table. For example, using a MidiBuddy with range selection of 0 to 127 the Solo Central Mode Toggle is code 40. When using programming range of 1 to 128 the Solo Central Mode Toggle is 41.












JamMan® is a registered trademark of Lexicon and The Harman Consumer Systems Group (HCSG),

a division of Harman International Industries, Inc. with which Signal Technology Labs has no affiliation.


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