iFi Audio Zen Stream

The iFi Audio Zen Stream represents a unique approach to audiophile streaming: rather than integrating a DAC like most network players, this digital transport focuses exclusively on the flawless transmission of the musical signal to your preferred converter. Priced at €399, this compact device offers broad compatibility with major streaming protocols, supports high-resolution formats up to PCM 384 kHz and DSD256, and incorporates noise reduction technologies usually reserved for high-end equipment.

Minimalist design serving performance

The Zen Stream features the signature blue-grey aluminum chassis of the Zen range. Its compact dimensions (158 × 100 × 35 mm, weighing 578 grams) make it easy to integrate into any audio setup. The streamlined front panel has only two buttons and two multicolored LEDs: the first indicates network connection status via a precise color code, the second shows the type of file being played (green for standard PCM, white for high-resolution PCM, blue for DSD).

This minimalist, screenless approach reflects iFi Audio’s philosophy: the device fades away in favor of the musical experience, with control handled via smartphone or computer. Passive cooling ensures absolute silence, essential for demanding high-fidelity systems.

Technical architecture: innovation serving sound

At the heart of the Zen Stream beats a 64-bit quad-core ARM Cortex processor, a rare level of power in this price range. GMT (Global Master Timing) technology regulates the USB and S/PDIF interfaces with femtosecond precision to eliminate jitter. The USB ports benefit from Active Noise Cancellation II, which actively suppresses electrical interference, while the S/PDIF output features iPurifier technology.

The internal power supply demonstrates meticulous attention to detail: low-noise LDO regulators, a 1.6 MHz synchronized controller, C0G capacitors, and Murata/Taiyo Yuden inductors. These professional-grade components ensure uncompromising digital transmission.

Exclusive modes: maximum optimization

The Zen Stream’s major innovation lies in its “exclusive modes,” selectable via a rear switch. AIO (All-In-One) mode activates all features, while the four dedicated modes (DLNA, NAA, Roon, Tidal) turn the device into a specialized endpoint, focusing resources on a single protocol to reduce “software jitter.”

This modular approach allows you to precisely optimize the device for your use: dedicated Tidal subscribers will benefit from the dedicated mode, while multi-source users will prefer the versatility of AIO mode.

Universal connectivity

The Zen Stream stands out for its extensive compatibility: Spotify Connect, Tidal Connect, Roon Ready certification, DLNA/UPnP, AirPlay, and NAA function for HQPlayer. Decoding capabilities are impressive, with support for PCM 32-bit/384 kHz and DSD256 over both Wi-Fi and Ethernet, plus seamless MQA handling. A USB port allows direct playback from external storage.

The operating system is based on Volumio, deeply optimized by iFi Audio. Every software layer has been reworked for audio playback, ensuring stability and performance even with DSD256 over Wi-Fi. OTA updates guarantee the platform’s scalability.

Positioning compared to the Neo Stream

The Neo Stream (€1,299) adds a color display, an integrated DAC, I2S/AES-EBU outputs, and digital inputs. These features are aimed at ambitious setups requiring advanced flexibility, while the Zen Stream appeals with its conceptual purity and outstanding value for money. The choice depends on your setup: the Zen for those with a good DAC, the Neo for a sophisticated all-in-one solution.

Technical Specifications

Audio Streaming and Supported Formats

• High-resolution streaming: supports PCM up to 384 kHz and DSD256
• Supported audio formats
  • PCM up to 32 bits / 384 kHz
  • DSD up to 11.2 MHz (DSD256)
  • MQA: direct passthrough supported
• Exclusive modes: direct selection of streaming protocol for optimized performance (AIO, Roon, DLNA, Tidal, NAA)

Connectivity and Inputs / Outputs

• Network connectivity
  • Wi-Fi 802.11n (up to 100 Mbps on 5 GHz)
  • Ethernet RJ45
• Inputs
  • Network (Wi-Fi / Ethernet)
  • USB HDD (external storage)
  • Updates via rear USB-C or OTA
• Digital outputs
  • USB 3.0 Type-A x2 with active noise cancellation II
  • Coaxial S/PDIF with built-in iPurifier

Internal Architecture and Processing

• Processor: 64-bit quad-core ARM Cortex
• Clocks: femto precision with GMT (Global Master Timing) technology
• Integrated technologies
  • Built-in iPurifier on S/PDIF output
  • Active noise cancellation II on USB ports
• Internal power supply
  • Low-noise LDO regulators
  • 1.6 MHz synchronized power controller
  • C0G capacitors, Murata / Taiyo Yuden low ESR inductors
• Cooling: passive, fanless
• Open and scalable architecture based on Volumio, optimized by iFi

Software Compatibility and Control

• Full compatibility: Spotify Connect, TIDAL Connect, Roon Ready, AirPlay, DLNA, NAA (HQPlayer)
• Compatible apps
  • Roon
  • HQPlayer (NAA)
  • Tidal / Spotify (native Connect)
  • AirPlay 1
  • All DLNA players
• Remote control: use via smartphone, tablet, or web browser (iFi interface / Stream-iFi app)

Power Supply and Consumption

• External power supply
  • Input: DC 9 V / 1.8 A to 15 V / 0.8 A
  • Mains power: 100–240 V AC, 50 / 60 Hz
• Power consumption
  • Standby: ~6 W
  • Operation: ~10 W

Dimensions and Weight

• Dimensions: 158 × 100 × 35 mm
• Net weight: 578 g