The iFi ZEN Blue 3 is a versatile Bluetooth interface supporting both transmission and reception with Bluetooth 5.4 connectivity. It handles lossless audio via aptX Lossless codec and high-resolution playback up to 96kHz/24-bit through aptX Adaptive, LDAC, and LHDC (HWA) standards, alongside aptX HD, aptX Low Latency, AAC, and SBC compatibility. Three operational modes provide flexibility: receive Bluetooth streams from mobile devices, transmit audio to wireless speakers and headphones, or function as a USB/S-PDIF DAC for wired sources. The balanced 4.4mm line output integrates seamlessly into professional and consumer audio systems.