Just found this model of Yamaha on sale for the price of a new G-major or smth like. How good will Yamaha SPX 2000 be to run a guitar preamp through it? To run it through a guiatr preamp's send/return? Or I'd better stay away of it?

I know many guitarplayers use SPX 90's, 900's, 1000. And what about the spx 2000 ($500, fully in order but with a large ugly scar running through its top)?