Being heard doesnt have to be difficult. With the Yamaha Stagepas 400BT getting your sound right has never been easier. Combining two 8 speakers with a versatile 8-channel mixer that delivers 400W of power you can take advantage of the systems ability to deliver a massive SPL of up to 125dB. No need for big and bulky systems that are difficult to get around. This lightweight and highly portable PA system gives you everything you need to deliver an unforgettable performance. All-in-one lighting system with intuitive control. The Chauvet DJ 4Bar LTBT Bluetooth LED Par Bar combines versatile dynamic lighting with intelligent Bluetooth wireless technology. With Chauvet DJs patent-pending BTAir app for iOS and Android devices you can create stunning coordinated lightshows straight from your smart-phone or tablet with no additional hardware.