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Cyrus 40 AMP: Reference Integrated Amplifier with ESS DAC and HDMI eARC
The Cyrus 40 AMP is the ideal centerpiece for any high-end home audio system. Designed for audiophiles who value both analog warmth and digital precision, this integrated amplifier delivers 2 × 100 W into 6 ohms (up to 113 W when paired with the optional Cyrus 40 PSU) and is engineered to drive demanding loudspeakers with authority and control.
State-of-the-Art ESS Sabre DAC
At its core is the high-performance ESS ES9039Q2M DAC, featuring HyperStream IV Dual DAC architecture. Supporting PCM and DSD formats up to DSD1024 and resolutions up to 32-bit / 768 kHz, it delivers a transparent, emotionally engaging digital playback experience with superb clarity and detail.
High-Performance MM Phono Stage
Inherited from the award-winning Classic PHONO, the 40 AMP includes a low-noise, wide-dynamic-range MM phono stage, making it a perfect match for high-end turntables and vinyl playback far above standard integrated designs.
Modern and Versatile Connectivity
Equipped to serve as the heart of a complete Hi-Fi setup, the 40 AMP features:
HDMI eARC for enjoying TV and movie sound in high fidelity.
Analog and digital inputs (coaxial, optical, USB-B).
Pre-out and headphone outputs
Firmware upgrade ports via RJ45 and USB-A
Ready for Upgrade with 40 PSU
The internal switch-mode power supply can be significantly enhanced by connecting the external Cyrus 40 PSU, offering even greater power stability, lower noise, and improved musical dynamics.
Compact and Elegant British Engineering
Housed in Cyrus’s signature half-width aluminum chassis, with a 5” full-color TFT display, the 40 AMP combines precision British engineering with a sleek and contemporary design.
Technical Specifications
Output Power: 2 × 100 W @ 6 Ω (113 W with 40 PSU)
DAC: ESS Sabre ES9039Q2M, 32-bit
Inputs:
4 × Analog
1 × MM Phono
1 × HDMI eARC
2 × Digital Coax
1 × Optical
1 × USB-B (asynchronous)
Outputs:
1 × Pre-out
1 × Fixed output
1 × Headphones
Audio Format Support: PCM up to 32/384 (USB), SPDIF up to 24/192, DSD up to DSD256
Dimensions: 88 × 220 × 385 mm
Weight: 8.5 kg
Cyrus 40 PSU: High-Performance External Power Supply for the 40 Series
The Cyrus 40 PSU is a reference-grade external power supply designed to unlock the full potential of any component in the Cyrus 40 Series. Built with precision British engineering and housed in an elegant black anodized aluminum chassis, this power supply features an intelligent microprocessor that communicates directly with the host device, delivering ultra-clean, stable, and virtually noise-free power.
Optimized Power Delivery for Each 40 Series Component
With the 40 AMP: It reinforces the amplifier’s power rails, offloading the internal PSU to focus solely on the DAC section. This results in significantly improved transparency, dynamics, bass control, and harmonic richness—offering greater authority, timing accuracy, and musical engagement.
With the 40 CD: It powers the master clock and CD drive motors independently, reducing internal noise and improving disc reading precision. By separating the digital and analog DAC power supplies, jitter is reduced, yielding superior imaging, definition, and spaciousness.
With the 40 ST: It provides dedicated power to both the BluOS streaming module and the analog DAC, enhancing soundstage depth, micro-detail retrieval, and overall refinement.
Key Features
Intelligent power management with direct communication to host device
Digitally regulated multi-voltage outputs
Dramatic improvement in bass control, dynamics, and tonal precision
Fully compatible with Cyrus 40 AMP, 40 CD, and 40 ST components
Technical Specifications
Standby Mode: +5 V DC / 0 V
Fixed Operating Voltages: +5 V DC / +24 V DC
Regulated Variable Output: +10 V to +45 V DC
Unregulated Variable Output: +45 V or +56 V DC
Firmware Updates: via RJ45 Ethernet and mini USB
Dimensions: 88 × 220 × 365 mm
Weight: 9.4 kg
Cyrus 40 PSU: the essential upgrade for audiophiles seeking maximum sonic performance from the 40 Series.
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