Looking for small form-factor re-amp boxes

Pretty much what it says on the tin -- I am wondering if there is a small form-factor re-amp box commercially available. I currently have two Radial ProRMP passive re-amp boxes, which I LOVE -- but, they are not what I would call lightweight.
I need two of these boxes for use with my modular synth for rehearsals and gigging, so weight is a big factor. The issue I am having is that the signal coming out of my modular is too hot for outboard guitar pedals.
I need two of these boxes for use with my modular synth for rehearsals and gigging, so weight is a big factor. The issue I am having is that the signal coming out of my modular is too hot for outboard guitar pedals.