ONE Cast

With ONE Cast you can stream music in high-quality directly from your phone using Spotify, Deezer, Amazon Music, Apple Music, Qobuz, Tidal – in fact, almost any streaming service over Wi-Fi. If you have voice assistant smart speakers on the same Wi-Fi network, you can use voice commands to send music directly to your ONE Cast smart amplifier or even set as part of a group for true multiroom audio.


The ONE Cast

As the centre of your new smart home audio system, ONE Cast will connect directly to virtually anything that produces audio. From mobile phones over Wi-Fi, laptops through USB, games consoles, record players and radio stations over the internet. You can even connect your Smart TV to ONE Cast using HDMI. It even features a class-leading headphone amplifier for late-night listening.

The Cyrus ONE Cast is arguably the most innovative stereo amplifier available today. Boasting 100 watts per channel and using bleeding-edge technology developed entirely at our Cambridge headquarters, this smart amplifier is capable of driving any loudspeakers with unerring ease from anywhere in the house.

ONE Cast doesn’t need a separate app.

Just like a Smart Speaker, you simply connect directly to ONE Cast using Spotify, Apple Music, Tidal, Qobuz, Deezer, or whichever streaming service you use on your phone. Two taps and the music that was on your phone is now amazing your senses, now that’s one smart amplifier.

Just open your chosen music streaming service, play some music and select the ‘now playing’ screen. Now you simply connect to ONE Cast just as you would with any other smart speaker on the market. No need for a smart audio app, ONE Cast takes care of that for you.

Use voice control through your 'Smart speaker'

If you have a smart speaker (Apple Homepod, Amazon Echo/dot or Google Home) on the same wifi network, you can use voice commands to send music to your ONE Cast. IF it’s in standby, it will automatically wake up and start playing.

“Alexa, play BBC radio 1 on ONE Cast”

Connect into the same network as your existing smart speakers and you can send music directly to your ONE Cast. You can even ask for specific tracks or albums.

“Google can you play my dinner playlist downstairs?”

You can give ONE Cast a name, assign it to a room or even a ‘group’ of rooms. You can send synchronised music to play in several rooms at once using your streaming app, or even with voice commands.

“Hey Siri, play some cool jazz”

ONE Cast works with the leading voice control platforms from Google, Apple and Amazon



Google Assistant enabled, Amazon™ Alexa enabled and Apple® AirPlay 2 enabled

Asynchronous USB input (up to 32bit 192khz and DSD to DSD128),


Optical Toslink,

Coaxial SPDIF Bluetooth™

Audio RCA input to built-in MM phono stage for turntables.

Analogue input configurable for AV integration

Amplifier design

Cyrus 4th generation Hybrid Class D amplifier – outputs 2 x 100W (into 8 Ω at 0.1% THD+N)

SID – Speaker Impedance Detection (automatically calibrates amplifier to your speakers)

Pre outputs – connect to additional power amplifiers

High power, high voltage class AB headphone amplifier


Over the air firmware update – Latest software downloads and installs automatically.

Linear power supply

IR remote control

Lockable front panel controls

WI-FI Connectivity


WEP, WPA, WPA2 security

Headphone Amplifier

Signal to Noise Ratio – 128dBA

1300V/us Slew Rate

700mA max output current (per channel)

2 x 1W max output power

Recommended headphone impedance 16 – 1200 Ohm


(H X W X D) – 85 x 220 x 390mm

Weight – 5.6kg

Manuals & Guides



“The Cyrus One Cast Smart Amplifier Could Be The Answer To All Your Music Needs. There’s something about the quirkiness of this smart amplifier that endears me to it. I can’t explain why but its sound is enchanting” – Forbes 2021

Read Full Review

“So now you know how the music gets into the ONE Cast, but how does it sound? Well, in a word, transparent. This amp is one of the cleanest amps I’ve heard at the price point, and the tonal balance is superb.” – HiFi Trends 2021

Read Full Review

“The Cyrus ONE Cast combines the versatility and user-friendliness of modern smart speakers with the truly classic sound quality you’d expect from Cyrus” – STEREO Magazine 2020

Read Full Review

“This little integrated isn’t scared of powerful basslines, dramatic dynamic crescendos or soaring, expressive vocals. The result is both suave and sophisticated, punchy and powerful” – Stereonet 2020

Read Full Review

“Are you looking for an all-in-one amplifier that sounds good and is equipped to drive most speakers? Then the Cyrus One Cast is the right place for you” – 2020

Read Full Review

“With streaming, HDMI audio and voice control, the Cyrus ONE Cast is certainly smart, while delivering power a-plenty for a solid and musical hi-fi sound.” – Sound + Image awards 2021

Read Full Review

Join our community

Cyrus Audio has a variety of social media channels with a wide range of information and chat. Join our community and discover, experience and share all things #CyrusAudio.

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