This HamiltonBuhl KHA2/K8SCV is an 8-person Lab Pack that includes 8 HamiltonBuhl Kids-HA2 personal headphones and our 8-station jackbox. The headphones included feature a 3.5 mm stereo plug, adjustable headband and foam ear cushions for all-day comfort. The jackbox offers individual volume controls, 4 foot long connection cable with dual source plug for a 1/4 inch or 1/8 inch jack, making it compatible with a wide range of media players! Simply add your choice of HamiltonBuhl media players and you have an 8-station learning center!