This is interesting. My results are a little different.
I've tried using both the L.R. Baggs Gigpro preamp and the SansAmp Bass Driver DI with upright. And I use the SansAmp all the time w/ slab. All that follows is of course just my experience, my gear, opinions, and so on …
In terms of a pure, accurate sound, I think the SansAmp set flat w/ no effects is actually more transparent sounding than my Gigpro.
To my ears the Gigpro colors the tone, and its effect is quite prominent. It’s colored in a musical and pleasing way, kinda “tube like”, a little squashed or compressed, and more mellowed out in the mids.
[ I should point out this is with a Rev SOLO pickup, since I'm guessing the Gigpro may perform differently with different pickups. ]
And although I run my amps with no EQ for upright, I happen to dig PB+J’s "powerful" Bass & Treble EQ capabilities on the SansAmp. However that Bass knob is voiced, oh man!

It means serious business, and I really dig it w/ my BGs. It
is the great bass
equalizer knob for my electrics.
The fake tubes in the SansAmp are shall we say "critically acclaimed" for BG. But for DB, well, I think some people like the effect, and others don't.
Quote:
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Originally Posted by Aarongermain Has anyone gotten a good chance to compare and contrast them? |
Well, I’ll give ‘er a try:
SansAmp
- More transparent sound w/ everything set flat.
- Way more routing options (split a line to the PA, recording).
- Larger, heavier stomp box design. 9V or wall wart.
- No high pass filter.
- Tube emulation (analog).
- Bass and Treble EQ – Like PB+J said, a little goes a long way.
Gigpro
- Not as transparent. Adds color to the tone, but it's fat, thick, and friendly in its own way.
- Single ¼” output.
- So small it can clip on your belt. 9V only.
- High pass filter.
- No fancy effects.
- Bass and Treble EQ.
Oh I got a hankerin’ to try
PB+J's Avalon U5 for sure.