Spent some time on my own today trying to get a better bass sound from my PA, and ended up removing the SansAmp Bass Driver DI. The sound from the DI out in my Hevos amp is much fatter and clearer. This was not the case when I used to play with a small 12" EBS Drome combo, the SABDDI did good for that setup, but not so for the bigger Hevos rig. I just included the SABDDI out of habit, just assumed it would improve the sound. This is not what I expected, but I'll let my ears decide. The SABDDI goes home to my practice and recording setup.
YMMV - My Bass Driver adds too much to my Aguilar + QSC 1602 + Eden stack to leave it at home. I don't think most people would say that's a junky rig. I know of few other units that give that much natural sounding harmonic content, presence, and overdrive. Never had the pleasure to try a Hevos. That's a truly different animal.
Absolutely. There are so many variables and combinations so each person should listen and decide for him/herself. I'll probably bring the SABDDI to gigs anyway because with my rig it offers a second type of sound, warmer and smoother, but at the same time less bite and definition. This could however be exactly right for some (quiter) gigs.
When I traveled around more than I do now, I always thought the SABDDI was great for getting an "instant house sound" that had a little more character than just the BG itself DIed. I would take the effected output out to the house, and the unneffected output went into the input of whatever amp I had. The great thing was, whereas with rental rigs, I never knew what the amp's DI would give me if I were to take it out to the house, with the SABDDI, I always knew what the house was hearing. That was the SABDDI's main value to me. However, I never really cared that much for its sound through any amp I played--it kinda felt like preamping a preamp to me--so it never made it into my stage signal chain. It's a useful piece of gear for a lot of people, but as with most things, some people find its best use to be one thing, others another, and some won't need it at all.
I use the SABDDI as a preamp. A lot of the bars here have 'house bass amps' and the SABDDI can make even the most dismal sound OK. I bypass the amps on preamp and plug straight nto the FX return or power amp in. The trick, I find, is the balance between the processed and the raw sound...but using it, I can quickly get a useable sound even on such dreadful abortions as a Marshall DBS.