The Cyrus SmartPower is a high-performance, highly versatile power amplifier produced by the long-established British brand Cyrus Audio, renowned for its ‘compact’ yet high-end hi-fi design. Here are its key features:
1. Flexibility and Modularity (Stereo or Mono) The main feature of the SmartPower is its ability to adapt to changes in a stereo or home cinema system: Stereo Mode: It can operate as a standard stereo power amplifier (driving two channels), ideal for pairing with a preamplifier or for bi-amping (separate amplification of a loudspeaker’s high and low frequencies) alongside a Cyrus integrated amplifier. Mono Mode (Monoblock): Using a switch on the rear panel, the unit can be configured to operate as a single high-power mono amplifier. By using two units (one per channel), you can achieve an extremely high-performance dual-mono configuration.
2. Power Output: Stereo Power: Typically delivers around 60–80 watts per channel into standard loads (and up to approximately 90 W/ch in the Plus version at 4 ohms). Mono Power: When switched to mono mode, the power output increases significantly (exceeding 110–150 watts depending on the version and the loudspeakers), ensuring excellent control even with difficult or power-hungry loudspeakers.
3. Compatibility with the PSX-R power supply The SmartPower is designed to be connected to the Cyrus PSX-R regulated external power supply. This dedicated power supply unit provides a stabilised, noise-free DC voltage, relieving the load on the internal power supply stage and further improving sound clarity, dynamics and tonal accuracy.
4. Design and Aesthetics. Like the vast majority of Cyrus products, the SmartPower features the characteristic and iconic die-cast magnesium alloy chassis (smaller in size than classic ‘full-size’ hi-fi components, which are usually around 215 x 73 x 360 mm). This design not only reduces electromagnetic interference (Faraday cage effect) but also gives the unit a minimalist, robust and elegant appearance.
5. Intelligent Standby Function. It features a signal-sensitive automatic on/off system: the amplifier is able to switch on instantly as soon as it detects an incoming music signal (even at low volume) and to return to an ultra-low-power energy-saving mode if it remains unused for a prolonged period.
Key technical specifications (Cyrus SmartPower)
• Stereo power (8 ohms, internal power supply): 60 W per channel
• Mono power (8 ohms, internal power supply): 105 W
• Stereo power output with PSX-R external power supply (8 ohms): 60 W per channel
• Mono power output with PSX-R external power supply (8 ohms): 125 W
• Distortion (THD+N): < 0.004% (at 1 kHz) / 0.01% (20 Hz–20 kHz)
• Signal-to-noise ratio (S/N Ratio): 112 dBA (A-weighted, ref. 60 W)
• Frequency response: 1 Hz – 100 kHz (-3 dB)
• Dimensions (H x W x D): 73 x 215 x 360 mm
• Weight: 4.6 kg
• Chassis: Cyrus’s signature die-cast metal construction
Key features
• Mono/Stereo mode: Can operate as a traditional stereo amplifier or be bridged in mono mode for greater power.
• PSX-R upgrade: Designed for connection to the optional Cyrus PSX-R regulated power supply to enhance dynamic performance.
• System functions: Equipped with autoswitch (auto start/power down) and system control via MC-BUS
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