It does have midi switching and it works perfectly fine since I'm using it in my presets. I can switch from one channel to another with it.
I tried removing the footswitch from the amp and it just goes as if it was always on if there is no footswitch.
Here's what happen in the two scenarios:
- FX Loop 1 is in the loop (FX loop 1 is the one used for 4CM): The amp uses his own preamp to process the signal then return it to the helix and process it further. That means that every knobs for the channel are used on the amp directly. Volume, Gain and EQ. Volume on the helix does have an effect but the main is the amp.
- FX Loop 1 is NOT in the loop: The amp serves only as a poweramp in this case. Any knobs on the amp is useless and can be zero and doesn't change anything. The main volume is the helix and everything is setup within preset otherwise. The only knob still doing something on the amp is "Presence" as it is not part of the channels knobs I supose.
My presets that uses the EVH gain sound all have the FX Loop 1 in them, otherwise, I can't use the amp signal processing and must rely solely on the helix for that. It seems like the EVG Amp is able to somehow detect if there is a signal coming from FX Loop 1 or not and change the way it operates based on that.
For the comment I made saying the guitar is gone when adding effect, I'm talking about the "EFFECTS" stomp switch on the EVH footswitch. There are 4 buttons on it: ONE, TWO, THREE, EFFECTS. The first 3 are the channel selection and the last one seems to activate the effects loop. If its on (The light is on), then we can hear the computer output through usb using the helix driver. If I test the sound in the control panel. however, anything in the preset otherwise doesn't output at all. If its off, then the helix act as the main preamp and I only need to add an amp modeler in the preset for the guitar output to work along with the computer helix driver. This does work this way. However, my goal is to use the preamp of the EVH, the computer output and the helix as addional effects.
Thanks for trying to help by the way.