I have searched and found a few options but I thought it would be good to compile a list of overdrives that are low gain, eg. you can set it to only overdrive when you dig in but otherwise sound transparent.
Here are some dirt boxes that I own which aren't quite doing it for me (at least for low gain):
Fulltone Bassdriver mosfet: The comp-cut mode looses bass and the highs have to be cut to prevent un-pleasant fizzing. The other modes are what I would regard as high-gain. Sounds pretty transparent though.
Hematoma: Can get a low gain mode by putting the Pre volume and the gain both to very low volumes but it looses treble and I feel I am not making good use of the pedal like this.
AMT Electronics Slap Bass: Pretty damn close, and cheap. No bass loss and two band EQ. Can set it to not distort much at all unless I dig in. There is a bit of wooly definition loss though and a slight nasal quality.
MXR el Grande: I know, it is a fuzz... but If I set the gain to minimum and lower my volume loads, I can get a really nice touch-responsiveness where it sounds pretty clear when I play quiet and pretty nasty when I dig in. Not a good option for live though as I would have to mess with my volume.
Pedals that take my interest:
Barber LTD SR: Low gain with internal bass and presence controls. Looks interesting but haven't heard clips on bass.
Voodoo Labs Sparkle drive: Does low gain and has a blend knob which is nice... although I would prefer to avoid the blend knob solution (any pedal can just be mixed with a blend loop, although that does take up space). There are some nice clips around here somewhere...
Pro Co Rat: Played one when I didn't know much about this stuff and liked it. Seem to be loads of clones/mods about.
Way Huge Pork Loin: Looks really interesting. Lots of options in there. Tried one briefly and liked it. Expensive though.
Xotic Bass BB pre amp. Looks nice! Goes from clean boost to drive, apparently and has an EQ. Small too. Expensive though.
Brown stone?
I am leaning towards the Xotic Bass BB pre. Does look nice but I don't know how touch responsive it is (Eg. only breaks up when you dig in).
Here are some dirt boxes that I own which aren't quite doing it for me (at least for low gain):
Fulltone Bassdriver mosfet: The comp-cut mode looses bass and the highs have to be cut to prevent un-pleasant fizzing. The other modes are what I would regard as high-gain. Sounds pretty transparent though.
Hematoma: Can get a low gain mode by putting the Pre volume and the gain both to very low volumes but it looses treble and I feel I am not making good use of the pedal like this.
AMT Electronics Slap Bass: Pretty damn close, and cheap. No bass loss and two band EQ. Can set it to not distort much at all unless I dig in. There is a bit of wooly definition loss though and a slight nasal quality.
MXR el Grande: I know, it is a fuzz... but If I set the gain to minimum and lower my volume loads, I can get a really nice touch-responsiveness where it sounds pretty clear when I play quiet and pretty nasty when I dig in. Not a good option for live though as I would have to mess with my volume.
Pedals that take my interest:
Barber LTD SR: Low gain with internal bass and presence controls. Looks interesting but haven't heard clips on bass.
Voodoo Labs Sparkle drive: Does low gain and has a blend knob which is nice... although I would prefer to avoid the blend knob solution (any pedal can just be mixed with a blend loop, although that does take up space). There are some nice clips around here somewhere...
Pro Co Rat: Played one when I didn't know much about this stuff and liked it. Seem to be loads of clones/mods about.
Way Huge Pork Loin: Looks really interesting. Lots of options in there. Tried one briefly and liked it. Expensive though.
Xotic Bass BB pre amp. Looks nice! Goes from clean boost to drive, apparently and has an EQ. Small too. Expensive though.
Brown stone?
I am leaning towards the Xotic Bass BB pre. Does look nice but I don't know how touch responsive it is (Eg. only breaks up when you dig in).