I just bought this deal
on a DP-008EX and received it a couple of days ago. I haven't recorded anything
with it yet, but hope to start this week.
There's a section in the instructions about getting levels right with bass and guitar, and I think the interface is the same on both of these units. You select the hi/med/lo input levels in the onscreen channel setup and then use the channel Trim knob to fine-tune the level to never clip. They suggest if this doesn't cut it to adjust at the instrument itself. They also say if you're using an active, to use the line input option.
Astonishingly, I remembered
all this from reading the manual.
If you've lost your manual, Tascam has it on their site.
There's also some EQing and compression options on the 008EX, but in any case, if you still don't have what you want, you can run the bass through whatever effects and modelers you have lying around into the line input.
When recording bass in my real
studio, I go pure software from a direct input because there are infinite VSTs to tweak tone, but on the PocketStudio I plan to fiddle with a bunch of outboard whatnot I've accumulated over the years and never really used.