Used Whirlwind qbox

This used Whirlwind Qbox in great condition is a must-have audio line tester for quick, confident troubleshooting on stage or in the studio. It features an XLR mic/line input and output, a built-in speaker for signal monitoring, a mic/line level test tone generator, and phantom power detection to verify proper console or interface power. Rugged and compact, it’s ideal for checking cables, lines, and signal flow fast.