Hello ExWhyZer0,

ExWhyZer0 wrote:

How I have it hooked up is in I/O 1 and I/O 2 and set the routing to pre/post.

Can you elaborate on your point to point connections? Is your guitar going into In 1 and then you have Out 1 going to the front of the amp? Are you connecting I/O 2 to the amp’s effects loop? If this is true and you’re in Dual mode, use I/O 3 to go to the amps effects loop. I/O 1&2 are bound to the same path. 3&4 work on a different path altogether. I would consult this link to hook things up in 4CM: https://cdn.eventideaudio.com/manuals/h90/1.5.2/content/setup/pre-post.html