DOD FX7 - Manual (Page 17)

signal processing
FX7 Block Diagram
Input Buffer
Input
Distortion
Multiplex
Compressor
µ Pot
LEDs
Switches
Micro
Controller
Attn
Pre-
Emphasis
De-
Emphasis
RAM
A / D
DSP
D / A
Output
Jam-A-Long
Head Phone
Left Out
Right
Out
15 FX7 owner's manual