Are pedals like the Sadowsky, SansAmp VT bass DI, or the even Radial Bassbone able to operate well as the sole pre amp into a power amp? I've got a Demeter Minnie and I'm using a custom lunchbox tube preamp - bare bones Vol Bass Treble- In and Out. I need to add a DI. I've started looking at these pre pedals which got me wondering how they would perform if used with my Minnie alone. I like simple.