I've honestly lost track of how many of these I've installed. I only get positive feedback from the players. You don't need a battery and you really don't even need a pre-amp except for EQ. The signal is hot and natural, assuming you install with the superglue method. I also use them exclusively in my personal performance guitars.
I own six acoustic guitars and now have the K & K pure pickups installed in all of them. Tried many acoustic guitar PUP's over the years and IMO these are the best. If you want the most natural sound you can get from your guitar, buy this pickup!
This pick up recreates the natural sound of my acoustic perfectly. I have installed these pickups on three of my acoustics and my guitars sound great. The instructions are clear and easy to follow. Like the new packaging as well.Thanks K&K!!
This pick-up really works well utilising the pre-amp control on the Genz- Benz amp to provide a very natural acoustic tone. I have used other guitars with Fishman pick-ups through this amp but have always thought the sound was more electric than acoustic. The K & K pure Mini provides a very satisfying full acoustic tone. By the way, the guitar I have fitted it to is one which I made myself using Macassar Ebony for the back and sides with an Engleman Spruce top. it projects very well and the tone is complimented by the K & K's.
I love my K&K Pure Mini - it does what it's supposed to do and does it soooo well - it lets me get plugged in and reproduce the natural sound of my Taylor. No quackiness of an undersaddle piezo pickup, no added weight, doesn't affect the structure of the guitar (like an LR Baggs M-80 does which I tried first), amplifies me tapping on the body of the guitar, no feedback to speak of...just a simple installation and you get the best passive pickup there is out there.