How to rack ADA MP-2 and Marshall JMP-1 together

[ando]

Thank you everybody to reply me, I try every method,but the noise is too terrible.So I to give up.

That's a pity. I am sure you have done something not quite right for things to sound this bad. You would need to supply exact information about how you have connected things, but if you have already given up on the idea, I guess it's a moot point. Good luck with your next tone quest!