I sold my amp, now I won't buy an amp for the next 6-12 months. Right now I'm playing through my Vox headphone amp, or with my interface with Ampeg SVX. I thought that maybe I can buy a pedal/pramp that I'll use as a pre, I'm just not sure if it's worth it. What's the point of these pedals, and are they worth it? I saw that the Sansamp DI doesn't have a mid level control, and the VT does, I'd like mid range control over my sound, will it make a noticeable effect on the sound not having mid range control? Thanks.