Aluminium 30W RMS Bluetooth 4.0 Two Channel Digital Audio Amplifier Receiver (Wilton DTB10) Compact size makes this amplifier great for projects and DIY audio applications Bluetooth 4.0 Connection, 3.5 mm jack allows easy connection to iPods, smart phones, and mp3 players Aluminium enclosure that is lightweight, yet sturdy, and acts as a heat sink Digital amplifier chip provides efficient, powerful sound. Economical but tremendous performance