Hi, I'm planning to get me a preamp. I've limited my choices to an Ampeg SVP-Pro or a Tech21NYC Sansamp PSA or an RBI. But! I've never had the change to try one of these out (hard to find shops in belgium which have these in stock) so I ask you guys for soundclips of these amps. I've tried the search function on this forum, but no results so far... Ow yeah, I mostly play heavy rock and or metal (every possible form of it!