Hello,

The setup you describe will work just fine, if that’s how you want it to work.

• Connect guitar directly to amp
• Connect Amp Send to H90 input 1
• Connect Amp Return to H90 output 1

With this setup, all of your effects will be in the amps loop.

You may also consider trying a Pre/Post setup. The H90 is great for this application, since it allows you to use effect in front of the amp, or in the loop of the amp: https://cdn.eventideaudio.com/manuals/h90/1.9.7/content/setup/pre-post.html

Let me know if you have any other questions.