The HD6 powered speakers are Audioengines flagship powered speaker system. If youre looking for a premium pair of powered / active speakers then read on. This exceptional powered speaker system represents a major milestone for Audioengine and shows just how far they have progressed in the last 10 years. Featuring class AB monoblock power amplifiers that really pack a punch as well as analogue and digital inputs including aptX Bluetooth and optical the HD6 is not just another great sounding pair of Audioengine powered speakers but a complete audio system. Easy to set up simple to use and designed for the way people listen to music today.