Audioengine W3R Wireless W3 Adapter Add-on Receiver - Expand your existing W3 wireless setup. The W3R is a receiver only add-on kit for the W3 Wireless Audio Adapter - Super-compact size, no batteries required - 30m range with no dropouts or interference - CD-quality stereo sound with no reduction in audio quality - Plays all music formats from any media player - Replaces any RCA or 3.5mm mini-jack cable - Input bit depth: Up to 16 bits native - Input sample rate: Up to 48KHz native -