The home of Hi-Fi

Cyrus Audio 40 PSU

Cyrus Audio 40 PSU external power supply with black aluminum chassis for hi-fi system upgrades
Cyrus 40 PSU – A dedicated power upgrade for enhanced clarity and control in compatible hi-fi components.

Cyrus Audio 40 PSU – Precision Power for Performance Audio

Introduction

The Cyrus Audio 40 PSU is a high-performance external power supply designed to enhance the performance of compatible Cyrus components. Released to celebrate 40 years of Cyrus innovation, this PSU delivers ultra-clean, regulated power to amplifiers, DACs, CD transports, and phono stages. It’s a vital upgrade for audiophiles looking to extract maximum sonic clarity, dynamics, and control from their hi-fi system.

Features and Design

  • High-capacity linear power supply design
  • Dedicated ultra-low-noise power regulation
  • Machined aluminum half-width chassis with premium black finish
  • Enhanced current delivery for compatible Cyrus devices
  • Intended for use with Cyrus integrated amps, preamps, DACs, and phono stages
  • Toroidal transformer and advanced voltage regulation circuitry
  • Quick connection via proprietary cable

Audio Performance

By supplying dedicated power to sensitive audio circuits, the Cyrus 40 PSU improves transient response, dynamic range, and overall detail retrieval. Listeners report a blacker background, tighter bass, and more open midrange when used with Cyrus amplifiers or DACs. It's an essential tool for revealing the full potential of Cyrus components in high-resolution systems.

Compatibility and Use

The 40 PSU is compatible with several Cyrus models, including the 40 AMP, Classic AMP, Classic PRE, CDi-XR, and Phono Signature. Once connected, the PSU automatically takes over power duties for specific sections of the connected device, allowing internal components to operate more efficiently and with reduced noise interference.

User Experience and Setup

Setup is quick and tool-free. The PSU connects using the supplied umbilical cable and activates when the host device powers on. Its compact footprint and clean design make it an easy addition to existing Cyrus stacks, and its performance gains are immediately noticeable with the right system.

Specifications

  • Type: Linear regulated external power supply
  • Output Voltage: Regulated (model-specific)
  • Transformer: High-current toroidal
  • Compatibility: 40 AMP, Classic AMP, CDi-XR, Phono Signature, and more
  • Connections: Proprietary DC output cable
  • Chassis: All-metal half-width
  • Dimensions (W x H x D): 215 x 75 x 360 mm
  • Weight: 4.5 kg

Pros and Cons

Pros: Substantial sonic upgrade, compact form, quiet operation, improves dynamic control, compatible with many Cyrus models.

Cons: Works only with Cyrus components, adds cost to system build.

Conclusion

The Cyrus Audio 40 PSU is a powerful upgrade for serious audiophiles. Its ability to enhance the sonic performance of supported components is undeniable, offering greater realism and emotional connection to the music. If you own compatible Cyrus gear and want to get the best out of it, the 40 PSU is a worthy addition to your setup.

Frequently Asked Questions

What does the Cyrus 40 PSU do?

It replaces the internal power supply in supported Cyrus components, delivering cleaner and more stable power for better performance.

Is the 40 PSU compatible with non-Cyrus gear?

No, it’s designed exclusively for specific Cyrus models using their proprietary connection system.

Can I hear the difference immediately?

Yes, most users report clearer detail, improved dynamics, and lower noise floor upon installation.

Share this page

Home Hi-Fi
Categories
Hi-Fi
Makes
About us