Thank you for quick reply.

It goes,

My guitar to H-90  input 1.

H-90 output 1 to Apollo twin Hi z input.

Using Logic X pro, I tried mono and stereo input on Logic but I could not make it to stereo sound.

also I tried

My guitar to H-90  input 1.

H-90 Output 1 to apollo twin input 1, H-90 Output 2 to apollo twin input 2

but I can’t select 2 tracks at the same time on logic while I’m playing.

Sorry for my ignorance. I think it’s simple fix that I don’t know about.

Please help.