Boxa wireless Definitive Technology W9 Amplification: 6 Channel Amplification: Each woofer, tweeter and full-range driver has its own dedicated amplifier channel for greater dynamic range and a greater sense of realism. Woofers 2 x 70W; tweeters and full-range drivers 4 x 10W Wireless Connectivity 2.4GHz & 5.8GHz Inputs/Outputs: Optical, Analog, Ethernet, USB-A for firmware updates and phone charging Driver Complement Tweeter Quantity 2 aluminum dome Diameter 1" (2.54cm) Type front-firing Woofer Quantity 2 Size Class 5.25 Type front-firing Full Range Quantity 2 Diameter 2" (5.08cm) Type side-firing Dimensions Base Height 7 1/2" (19.05cm) Width 16 3/5" (42.16cm) Depth 7 3/10" (18.54cm) Shipping Accessories Included Accessories power cable Carton Size Height 12 1/2" (31.75cm) Width 21 1/5" (53.85cm) Depth 11 1/10" (28.19cm)