The cabinet of the Airpulse A300Pro speakers is made of fine 25 mm thick, high-strength walnut veneer with a 36 mm thick sound-absorbing inner liner that optimizes the absorption of excess standing waves to reduce sound coloration to an absolute minimum and deliver lifelike pristine sound. The speakers feature a refined horn-loaded aluminum ribbon tweeter that fills every corner of a room with clear and harmonious highs. An improved 6.5-inch magnesium-aluminum woofer, supported by a 50mm diameter voice coil and a sophisticated heat dissipation mechanism, provides the lowest distortion at the highest dynamic range for highly detailed and deep-reaching tones at any volume. The connection between the left and right speakers uses Kleernet wireless transmission technology to provide lossless wireless playback. When paired with the Qualcomm QCC3031 Bluetooth receiver, the A300Pro ensures high-quality, faithful playback when streaming from your smartphone, tablet, PC or laptop. In addition to the standard wireless left/right stereo configuration, the A300Pro speaker system also offers an independent left and right configuration as traditional monitor speakers, typically used with mixing consoles and in professional recording studios. The Airpulse A300Pro speakers connect to your audio equipment via RCA, optical, coaxial, USB and XLR. The included remote control lets you switch between sources, adjust volume, and turn the speakers on and off from the comfort of your couch. Alternatively, you can adjust the bass, treble, and volume of each speaker to your preferences using the controls on the back of each speaker for a rousing listening experience.