iFi Audio ZEN Blue V3 Bluetooth DAC.

Specifications

• transmits and receives high-quality Bluetooth signals
• built-in Bluetooth 5.4
  • transmits Bluetooth signals from sources connected via USB-C, optical digital, coaxial digital, and RCA
• front iFi logo acts as an LED Bluetooth codec indicator for signal quality
• durable two-tone all-metal chassis with high-grade connectors
• Bluetooth antenna for extended connection range

Performance features:

• built-in ESS Sabre Hyperstream digital-to-analog converter chip for high-fidelity sound
• Qualcomm QCC518x Bluetooth processing chip for advanced wireless streaming
• fully balanced internal circuitry to avoid distortion and cross-talk between channels

Rear connections:

• balanced 4.4mm output for connecting a powered speaker or amp
  • Note: do NOT connect balanced headphones to this output — the full signal could damage your headphones and/or hearing.
• analog stereo RCA audio input
• analog stereo RCA audio output
• 3.5mm optical /coaxial digital audio input
• 3.5mm optical /coaxial digital audio output
• 5-volt DC power input (power cable included)
• USB-C input

Other info:

• "mode" knob for changing between Bluetooth reception, transmission, or wired DAC
• low-latency toggle button for Bluetooth transmissions
• source selection knob
• stereo RCA cable included
• wheight 447 gr

What's in the box:

• Bluetooth receiver / transmitter / DAC
• 4.25" Bluetooth antenna
• AC adapter with attached 46" DC output cord (DC output: 5V 500mA)
• 21" Stereo RCA patch cable
• 47" USB cable (USB-A on one end and USB-C on other end)
• Optical (Toslink)-to-3.5mm adapter
• Quick Start Guide
• Product Safety Guide
• "After-Sales" card
• iFi decal