This Faith Guitar is fitted with a discreet Fishman Sonitone preamp system which features a volume and tone control mounted to the underside of the inside of the soundhole. The sonicore piezo strip is mounted under the saddle. The battery is located in a special bag affixed inside the guitar attached to the neck-block. The output jack is combined with the strap button at the base of the guitar. https://www.faithguitars.com/electronics