KEF EGG Versatile Desktop Speaker System  - Frosted Blue (Pair) The KEF EGG brings every nuance of your music or movies to life whether you're listening via USB, auxiliary input, or via Bluetooth. Switch between the EGG's input with its own dedicated remote control, which also allows you to control the volume and power the pair on and off. The unique speaker duo is powered, meaning it employs its own integrated amplifier and DAC. All you need to do is supply the music. The EGG uses KEF's Uni-Q driver array, which combines the tweeter and mid-range driver for a beautifully natural performance. To add even more low end, the EGG features an output for an external subwoofer.