iFi audio ZEN Air Blue

The ZEN Air Blue adds Bluetooth to an amplifier, active speakers or any system with an RCA input, so you can stream from a phone, tablet or computer. It supports all the common Bluetooth codecs: LDAC, LHDC/HWA and aptX Adaptive at up to 96 kHz, aptX HD at up to 48 kHz, plus aptX, aptX Low Latency, AAC for Apple devices and SBC. A Qualcomm QCC5100-series chip receives the signal and a separate ESS Sabre HyperStream DAC converts it, helped by iFi's GMT clock against jitter, TDK C0G capacitors and low-noise Texas Instruments parts. iFi's Bluetooth firmware can be updated over the air, so future codecs may be added. It runs on 5 V through the USB-to-DC cable in the box and weighs 295 g. Its only output is a pair of RCA sockets, so you connect it to an amplifier or active speakers.

• LDAC, LHDC, aptX Adaptive/HD/LL, AAC, SBC
• ESS Sabre DAC with iFi's GMT clock
• RCA output, powered by 5 V