I've been trying this idea, where I take the "emulated line out" on a Marshall Haze 40 and directly plug it into the "mix in" on my bass amp.

And from the Haze input i plug my pedal board in. But just before my bass, I use a Preamp. The effected out go directly into the input on the bass amp, and the direct out into my board.

Is this an irrational idea? Or should I continue it?