The #JT30VC Astatic Bullet harmonica mics need this cable. First, because it's Hi-Z, and secondly, because it's 3 pin hot. That's right, you can have a cable look like this one, with the similar connectors and everything, but they may be only 2 pin hot in which case, they won't work with the bullet mics. Plus, you should buy this cable anyway - it's the most reliable we've found. 20' long with a 3 pin hot XLR connector on one end and a 1/4 jack on the other.