I’m connecting the Mod Duo X via the FX loop of another device and experiencing a high pitch digital whine even on the default preset.
I carried out various testing and the issue resolved via using an isolated PSU (OneSpot CS12 Pro from Truetone) for the Mod Duo X. The device I’m connecting to is the Quad Cortex from Neural DSP and they have internal ground lift options for the fx loop which didn’t make a difference. Both PSU’s are connected to the same power strip/socket. Using the CS12 (which is located on my pedalboard) means I can’t have the DUO X on my desktop as the cable isn’t long enough from my pedalboard.
I tested other digital devices in the fx loop of the Quad Cortex with no issues; only the Duo X when using it’s native PSU has this issue. Can anyone advise as to what sort of isolation issue is/not present in the Mod Duo X power supply?