It was *very* easy to install, which was probably why no manual came with it.
The sound is as expected, the humbucker is less brittle than a single coil pickup. Naturally, you have to be aware of that these kinds of pickups won't have the same qualities as your guitar's acoustic sound.
Now to the big thing!
As this is a passive microphone (no need for battery), the output is very low. I knew this before hand, but man, it is insanely quiet!
Anticipating the low signal, I bought a cheap Behringer DI-box to amplify the signal. I happily it into my audio interface (for testing). But I was surprised when I had to crank the gain on the interface to the point that I got as much noise from the (noisy) DI-box and my interface's preamps as that of the guitar signal.
I had an old POD lying around and tried the pickup through that into the DI-box and that boosted it enough to give me a cleaner signal (although the POD is noisy as well, don't get one for this purpose only).
So if you intend to plug it into a mixer, invest in a proper pre-amp dedicated for acoustic guitars. Perhaps a more expensive DI-box will do the trick, but I wouldn't gamble on that.
This brings up an interesting point; is it worth getting a passive pick-up if you still have to buy a pre-amp as well? Knowing what I know now, I would probably say no, just get an active pick-up (unless, of course, you already own a suitable pre-amp). I thought it'd be nice to avoid having to worry about battery life, but instead I just have to worry about more gear.
Since I don't have any acoustic guitar amp I tried it through one for electric guitars and I did have to crank the volume more than on my electric guitars, so it is indeed a low output pickup!
Notice that all of this is basically just technical issues. That doesn't have to be a problem if you know what you're doing (a passive pickup has, by it's nature, low output). The pickup sounds great but perhaps you're better off buying an active one for a couple of hundreds more?
