Be heard in even the loudest rock band with Fishman’s Blackstack passive soundhole pickup. The vintage sound of a humbucking magnetic pickup is now available in a modern, battery-free design. It features adjustable pole-pieces and a premium TA4 mini-XLR connector integrated into the housing, allowing easy installation, removal and connection to the included cable, or your own custom endpin mounting solution. Features: Humbucking magnetic coil with cutting vintage sound Passive design for battery-free operation Adjustable pole pieces allow for perfect string balance adjustment and help to compensate for varying string heights between instruments Included 5-foot cable featuring premium TA4 mini-XLR connector to ¼” combination endpin jack/in-line connector for easy installation and removal Use out-of-the-box with included cable or create your own custom endpin jack solution Fits sound holes as small as 3-5/8” (92 mm) diameter Premium TA4 mini-XLR connector for easy installation with included cable