Andy Ives
Member
HI PhilipIf your Boss pedal has an expression output (you didn't mention which of the FV series you have), then yes, you need a TRS to TRS.
If it is just a volume pedal with no expression output, you can still try it as an expression. You would need a TRS to dual TS cable (and plug into the input and output of the pedal).
Bottom line, on the Fractal end, the expression connection is TRS.
Its the Boss FV 500-H with an expression output so hopefully just a TRS cable will do the trick
Thank you