The instrument
The Boss BE-5 offered five effects: Chorus, Noise Suppressor, Overdrive/Distortion, Digital Delay and Compressor.
Details
The Boss BE-5 is effectively four pedals with five effects grouped on a board:
Chorus - CE3
Digital Delay - DD3 (with the long chip)
Overdrive / Distortion - OS2
Compressor - CS3It
Also has a noise suppressor control, a tuner output, an F/X loop and a stereo output.