The Schaller Shadow Midi Bridge is a double locking tremolo unit with piezo and has a matching Shadow Electronics GTM-6 Multiplexer Box and wiring. The Schaller Shadow Midi bridge was produced from 1985-1989 and were part of a Charvel package that included the rack mounted Shadow/GTM-6 Midi converter and Controller. The Shadow GTM-6 system used an onboard analog Multiplexer to send all 6 string signals over one TRS 1/4" phone plug connection. It is a proprietary system that relies on the Rack Mount Shadow/Charvel TTM6 unit to decode these multiplexed signals.
