Cyrus 40 ST Network Streamer

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Cyrus 40 ST Network Streamer

High-Fidelity Streaming Hub with Advanced Connectivity and Precision Control

The Cyrus 40 ST is a state-of-the-art network streamer and digital preamplifier designed to serve as the intelligent heart of your modern hi-fi system. Packed with streaming options, analog and digital inputs, a world-class DAC, and future-ready upgrade potential, it delivers breathtaking clarity and detail in a sleek, compact enclosure. Whether you're using it with a Cyrus power amplifier or integrating it into an existing setup, the 40 ST offers reference-level sound with intuitive control.

Key Features

• ESS ES9038Q2M Reference DAC
  Provides high-resolution audio decoding up to 32-bit/768kHz PCM and DSD512 for incredibly accurate and natural digital playback.

• Wide Streaming Compatibility
  Supports UPnP, AirPlay 2, Spotify Connect, TIDAL Connect, Qobuz, Roon Ready, and internet radio – giving you access to millions of tracks in lossless and hi-res quality.

• 2-Way Bluetooth (aptX HD)
  Stream directly from your mobile device or output to compatible Bluetooth headphones and speakers in high quality.

• Cyrus App Control & Web Interface
  Full-featured control via the free iOS/Android app or browser-based setup and navigation with multi-room capabilities.

• Analog & Digital Inputs
  Offers both analog and digital source compatibility for complete system integration.

• Built-in Digital Preamp with Precision Volume Control
  Allows the 40 ST to act as a complete preamplifier, eliminating the need for a separate component.

• OLED Display with Touch Navigation
  Crisp, high-contrast display with intuitive menu access and front-panel functionality.

• Compact Die-Cast Aluminum Chassis
  Rigid and low-resonance construction for superior thermal management and reduced interference.

• Upgradeable with External PSX-R2 Power Supply (optional)
  Enhances soundstage, dynamic range, and micro-detail retrieval with dedicated power separation.

• Designed and Built in the UK
  Engineered with precision and care by Cyrus' in-house design team in Cambridgeshire.

Technical Specifications

• DAC Chip: ESS ES9038Q2M

• Supported Formats:

  • PCM up to 32-bit/768kHz

  • DSD up to DSD512

• Streaming Services:

  • Roon Ready

  • Spotify Connect

  • TIDAL Connect

  • Qobuz

  • Internet Radio

  • AirPlay 2

  • UPnP (OpenHome compatible)

• Bluetooth: aptX HD (2-way)

• Inputs:

  • 1 x USB Type B (for PC/Mac)

  • 2 x Optical (TOSLINK)

  • 2 x Coaxial (RCA)

  • 1 x RCA analog line-level input

• Outputs:

  • 1 x RCA analog (pre-out)

  • 1 x Optical

  • 1 x Coaxial

• Control:

  • App (iOS/Android)

  • Web interface

  • IR remote

• Upgrade Options:

  • Compatible with Cyrus PSX-R2 power supply

• Dimensions: 73 x 215 x 360 mm (H x W x D)

• Weight: 4.6 kg

The Cyrus 40 ST is the ultimate digital source component for those seeking precision, flexibility, and audiophile-grade streaming performance in a refined, compact design.