A miniature onboard preamp built into an elongated endpin jack. The Powerjack will give active performance to your passive piezo pickup. 12,000+ hour battery life from a single 9-Volt battery! Professional installation is recommended.
• Miniature onboard preamp built into an elongated endpin jack
• Upgrades any Fishman passive pickup to active status
• 12,000 hours battery life
• Required 9V battery
