Early model ISP Sound Enhancer IS 5022 Professional

Early model ISP Sound Enhancer IS 5022 Professional , this model has a shiny surface

Some modifications

Isolation

Early model IS_5022  – 8204-055-9865.1 board  94-06-28   1994 june 28 .?

IS-5022Mk2 : 8204-055-9865.2 board  94-12-02   1994 December 02 ?