Bose SoundTouch SA-5 Bluetooth & WiFi Enabled Amplifier w/ 591 In-Ceiling Speaker - Pair (White) & Rough-in Instalattion Kit - Bundle This Bundle contains 3 items: (1) Bose SoundTouch SA-5 Amplifier - Black & (1) Bose Virtually Invisible 591 In-Ceiling Speaker - Pair (White) & (1) Bose Virtually Invisible 591 speakers rough-in kit - Pair 100W per channel amplifier connects wirelessly to your home Wi-Fi network. Stream Internet radio, Pandora and your music library outdoors Three aux inputs to connect non-streaming sources, such as a CD player The SA-5 amplifier also has Bluetooth connectivity and three aux inputs so you can connect non-streaming sources, such as a CD player. Each speaker has one 5" woofer and two strategically positioned 3/4" tweeters