What's your opinion on the SansAmp stuff?
While Tech21 strives to emulate a generally comfortable tube amp sound, there is a "Tech21 sound" all its own that I'd categorize as tight low-end and big punchy mids with highs that range from round to sharp. Other than perhaps the VT, I don't necessarily think a SansAmp is going to sound like an Ampeg. If anything, they're closer to sounding like a Sunn than an Ampeg. When I see a band live, I can more often than not tell if the bass player is using a SansAmp, because they have a signature recognizable sound to my ears.