Fcuajdkq Acoustic Guitar Pre-Wired Preamp 5 Band EQ Tuner Piezo Pickup with Guitar High Output Four Coil Humbucker Pickup

100% new and testing is fine This pick-up equalizer system with 5 bands is essential for all acoustic guitars who are looking to improve the sound. It features an actual loudness contour control so that you can precisely determine the level of the contour and get the right sound . With this preamp, you spend less time tweaking controls and more time playing. 2 set Musical instrument accessories:1 x Guitar Pickup & 1 set Preamp The Pickup output a strong sound,like to play metal guitarist,is a good choice. Supplied with a battery box