Cyrus ONE

Breath-taking audio from a single box integrated amplifier. Compact, yet boasting an incredible audio specification. Send Bluetooth from your phone, directly connect a record player, or plug in Google’s Chromecast audio for CD quality streamed music. It also has sound for pound, one of the best headphone amplifiers money can buy. ONE is the standard by which others are measured.


Design Philosophy of the ONE

Simplicity and integration are core to this product. As well as being app controllable, we’ve built in a high-quality Bluetooth receiver, so users can send music from their phones, and a ‘phono stage’ so users can directly connect a turntable. The powerful 100 watt stereo amplifier section uses our in-house designed ‘hybrid Class-D engine’ – one of the most impressive amplifier designs of recent years.

The ONE also has serious ‘Head-Fi’ credentials. The built-in Class AB headphone amplifier is exceptional. When used in this mode, the full power of the large toroidal transformer is diverted to power this amplifier section, producing a dynamic range and level of control rarely seen in even dedicated headphone amplifiers.

Another innovation from our design team and implemented in the Cyrus ONE is the ‘SID’ system. This stands for ‘Speaker Impedance Detection’ system. When the amplifier is powered on, it measures the connected speakers and automatically calibrates the amplifier to deliver the best possible performance.

Our over-arching design objective with the Cyrus ONE was to craft an integrated amplifier product that is as relevant and important today as the original Cyrus One product was in the 1980s. We wanted it to be affordable, drive pretty much every speaker system on the market and be a fantastic entry point to the core values our brand represents. We’re exceptionally proud of the results and are certain this amplifier will offer users many years of superb listening experiences.


– Built-in MM Phono stage
– aptX® compatible Bluetooth
– Pre outputs – for connection to separate power amps
– 4 line level inputs – Including AV Bypass
– High power, high voltage class AB headphone
– Bi-wire compatible speaker binding posts

– App control (iOS and android)

– IR remote control
– User upgradable firmware – updates to the latest firmware
for new features in your own home

– Cyrus 3rd generation hybrid Class D amplifier – outputs 2 x 100W
– SID – Speaker Impedance Detection
– Large toroidal transformer – linear power supply throughout for minimal noise
– Eleven separate power supplies – to maximise separation of different circuits

– Dimensions: (H X W X D) – 85 x 220 x 390mm
– Weight – 5.72kg
– Textured, rubberised and high gloss black finish

Manuals & Guides



“Record revivalists will be pleased to know that the phono stage will only encourage the vinyl-collecting habit. The Tallest Man On Earth’s Singers is a bold, insightful listen, with vocals, guitars and strings all clear and tactile.” – What Hi-Fi

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Compact in size but offering a snazzy and very attractive sense of dash and urbanity, the ONE provides everything you might need within a budget amplifier without any sense of compromise – The Audiophile Man

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“The sound of the Cyrus One is both dynamic and calm with accurate midrange which is neither too dull, flattened or warm. It is very convincing and pleasant, with great authority and politeness, accurate and non-fatiguing.”

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Cyrus ONE is a first-class proposition for music lovers who are looking for a reliable amplifier with beautiful sound and musicality but are also considering listening to music on better headphones. The added value is a nice built-in MM phono preamplifier as well as seamless Bluetooth aptX connectivity. […] Its sound character evokes very positive emotions. Recommended!”

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“I knew from the beginning that it would be a nice amplifier. And I was not mistaken. At launch everyone wondered if it would be a real Cyrus in a nicer package, a worthy successor to legendary models from years ago, or a device completely different from the fine traditions of the brand, built only to attract less wealthy customers. Different housing, modern design, wireless connectivity, class D – all smacked of a departure from audiophile ideals. But no! The British tried very hard and created an integrated amplifier that will be a dream come true for many music lovers. Not only is ONE beautiful, compact, functional and powerful, but it also sounds great. Its price does not shock you, but encourages you even more to take an interest in it.”

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“I noticed a long time ago that everything was moving closer together. When the right designers get involved and are commissioned to make something inexpensive using the same DNA as more expensive models, amps like the Cyrus One are born. Very good sound: audiophile, in the best sense of the word, is also available for little money. The potential of a Cyrus One can only be recognised with speakers that you would probably never combine with them except in a test situation. This brings about consequences that not everyone likes to hear: other really expensive devices have to get better.”

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“The performance of Cyrus ONE allows me to say with a clear conscience that when buying CYRUS ONE there is no need to buy a separate headphone amplifier. […]  The CYRUS ONE is another device that proves that the notion of class D being unfriendly to audiophiles is a fallacy.”


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“I think it can easily compete with competitor’s products that are twice as expensive. […] It is second to none in the quality / price department. A combination of solutions for traditionalists (turntable) and modern enthusiasts (Bluetooth)”

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Designed & Engineered in the United Kingdom

Cyrus Audio Ltd, Registered office: Ermine Business Park, Huntingdon, Cambridgeshire, England, PE29 6XY Company Registration Number: 05158466 - V.A.T Registration Number: 844 4689 89