If your really want a solid solution, get a 1/8" stereo to 1/4" left and right mono cable. Plug both 1/4s into a stereo direct box, or two single direct boxes. That'll give you a ground lift with that DI.What stereo DI box do you recommend?
I’ve got a Radial. It’s solid. Kind of a go-to standard. Mine is the “ProD2” you can also get one with the Jensen transformers for double the price, but that’s not necessary.