JL Audio JL Audio HD Stacking Kit

The JL Audio HD Stack Kit provides stacking hardware for two JL Audio HD/MHD amplifiers so they can be placed on top of one another. The HD Stack Kit comes supplied with four 4mm machine screws and four 5/8" spacers. A 3/6" and 1/8" hex-wrench (both included with JL Audio's HD amplifiers) are required for installation.