soundKey block

Put simply, Cyrus’ soundKey improves your music...vastly 

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.

We recommend buying through one of our authorised dealers. They will provide you the best service and advice. The soundKey, however, is available directly through us if you can't find it in your preferred dealer.

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Unbelievable Sound Quality

• Improved clarity, more realistic sound

• Works with Windows 10, 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


FAQ - General

Q. Which devices is Cyrus soundKey compatible with?

Android: OTG compatible devices, running OS 5.0 (Lollipop) and above

Apple: Devices running iOS 7.0 and above, using the Apple Lightning to USB Camera Adapter

Windows Phones: USB dual role devices, running Windows mobile 10 or later

Laptops: Works with any computers with USB connection

Q. What headphones will the Cyrus soundKey drive?

Headphones with impedances between 16 & 64 Ohms.

Higher impedances will work, but will not be able to be louder

Q. What is the output power of the soundKey?

2 x 138mW into 16 Ohms at 1% THD+N.

Q. Will the Cyrus soundKey work with Bluetooth wireless headphones?

No, the soundKey is designed to work with wired headhphones.

Q. How much power does the soundKey use?


Q. What quality files can the soundKey play?

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

FAQ - Android

Q. My phone is playing audio through phone speakers and not my headphones?

The cable provided is a single direction cable. Check that the grey end goes into the phone.

Q. My phone is still playing audio through the phone.

Your device may not be compatible for native USB OTG audio. Devices running custom operating systems built for android may not natively support USB-OTG audio.

There are apps that may allow non-native supported devices to work with the soundKey, such as USB Audio Player PRO.


Q, Which cables do Apple users need?

Apple Lightning to USB Camera Adapter:

If using the old 30 pin connector you need the previous version which is discontinued by Apple. 3rd Party versions are available described as ‘Apple 30 pin to female USB OTG cable’

The smaller cable will NOT work: 

Q. Which iPods does Cyrus soundKey work with?

iPods running iOS 7.0 or later (5th gen iPod touch)

NOT older iPod classics

Q. I can hear pops & clicks when listening to my soundKey connected to my iOS device

In rare cases using the soundKey with the standard Apple camera adapter exhibits a click or pop. We have found that by using the Apple Lightning to USB 3.0 Camera Adapter resolves this issue: 

Why soundKey?

How is soundKey different to other DACs?

Firstly, the size and design. If you are using your phone as your source of music, you are likely to be on the move. Therefore, being small and lightweight is key. The Cyrus soundKey weighs around 16 grams, so it’s no extra burden on your pocket or bag. From a design perspective, smooth rounded edges enable it to feel more like an integral part of the cable without catching or snagging on anything.

Secondly, the Cyrus soundKey has been designed to be an extremely low current device. Why is this important? We have deliberately not put a separate battery inside the Cyrus soundKey to keep it small, light and prevent you from having yet another thing you need to charge. Therefore it relies on the battery in the phone to provide it with power. The more power an external DAC draws, the quicker it will drain your phone battery. Other DACs typically drain 100mA - Cyrus soundKey has been designed to draw only 50mA.

Finally, it’s made by us, Cyrus. We have over 30 years of designing and tuning audio components to bring the very best out of a product, and provide a better music experience for our customers.


Cyrus Cadence App

Cadence allows you to wirelessly browse and select music through your Cyrus unit. Control most of the playback functions of your Cyrus streaming unit with a flick or tap of a finger on your phone or tablet.
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