The Boost/Comp/Tuner switch was a bit finicky at the start, but I was able to loosen the bolt on it, move it around, blow some air through the gap to maybe dislodge some dust, find where it likes to sit, tighten it down, and it's working reliably again.
I got the Dapper Bass to get a tuner, a preamp, and a DI for the bass so I can record with it easily, but as it turns out the other effects on it are pretty useful and great.
The Boost/Comp on this has a lot of oomph in it, and even with both the boost and comp all the way down it's basically a "make my bass feel better" switch. Probably my favorite effect on the whole strip if I'm honest. I'll probably end up using this more than the premp section of the bass.
The tuner is good, not great. Not the most precise, but it works well enough and is easy to use.
Dirty Q is fun and easy to play around with, but hard to find practical uses for. It's a very sensitive envelope filter, and the fuzz effect, while also fun, makes it a bit goofy sounding.
The preamp section is Sans Amp-ish and gives a good amount of EQ control with a nice warm gain sound (like a wool sweater that's a bit itchy). With everything at noon, there does seem to be a bit of a volume drop off, but there's more than enough in both the volume knob and gain knob to make up for that. With all the tone flat, it has a noticable effect on the tone, making it a good bit darker, which isn't necessarily a bad thing. The bass I got, the Harley Benton MB-4 Deluxe, is a bright bass on its own, and the premp section here helps tame it a bit for when that birghtness is not wanted as much.
The octave really makes it rumble when turned up, but I wish it were one octave down and one octave up instead of two octaves down.
The chorus only has a depth knob, but it has a great range on that one knob. It goes from nice and subtle to a big smooth wavey sound. Definitely useful, if only a bit of a one trick pony.