soundKey is an award-winning revolution in mobile music. Hi-Fi streaming services like TIDAL mean fantastic quality is available to subscribers, but phones lack the necessary hardware to get the best from this data. soundKey unlocks that data, using our years of expertise in high-resolution DAC and amplifier design. Cyrus quality audio is now available to everyone.


There’s very little downside to soundKey ownership.

It’s affordable, compact and high-performance – only iOS-fanciers, with their convoluted method of attachment, will be less than all-around thrilled by the difference it can make to mobile listening pleasure.

We really enjoyed the Cyrus soundkey — practical, convenient to carry, and delivering excellent sound into just about any sensible set of headphones.

soundKey is leading a revolution in mobile audio. Connect to your android phone, iPhone, laptop or tablet to unlock amazing sound.

The components in soundKey replace the audio processing and amplification of your phone, those components are the weak link in any mobile device – ours are award-winning

“This tiny hi-res marvel is among the very best pound-for-pound upgrades you’ll ever make.” – What Hi-Fi? November 2017


soundKey design philosophy

You think the sound is ok when you plug your expensive headphones into your phone? Wait until you hear this!

To explain a bit more scientifically, music is stored on your phone in various types of digital files. The DAC (Digital-to-Analogue Converter) in most phones, laptops and tablets is designed to hit a cost – that means it’s never going to deliver the kind of audio quality that your music files or streaming services are actually capable of delivering.


soundKey unlocks your audio, by accessing the raw digital files on your device and processes them using our special hi-fi DAC and amplifier. The analogue music output from soundKey delivers much more detail, more impact, greater precision and a good dollup of WOW.


Unbelievable Sound Quality

• Improved clarity, more realistic sound

• Works with Windows Vista+, Android 5+ and iOS9+ (all require OTG connection)

• 3.5mm Jack for headphones connection

• Robust aluminium casing

• Extremely low current, conserving your phone’s battery life


• Compatible with a wide range of audio format, including MP3, AAC, and FLAC

• Can handle High Resolution audio files up to 24bit/96kHz.

• Size 5.4cm x 2.3cm x 0.8cm

• Weight 18g

*Requires Apple Camera Kit for connection to iOS devices

Click here for soundKey FAQs 

Designed & Engineered in the United Kingdom