Cyrus Mono X 300 Signature

Cyrus Mono X 300 Signature

Engineered from scratch using Cyrus’ in-house developed Zero Feedback technology, the Mono X 300 Signature carries both prodigious power and exceptional control. Capable of driving the world’s most demanding speakers, the Mono X is the crown prince of power amplifiers.


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Cyrus Mono X 300 Signature - Flagship power amplifier

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Over 300w of amplification

Cyrus best power amplifier, the Mono X 300 Signature can provide an enormous 319 Watts of power to your speakers (through 6 Ohms). Their Zero Feedback technology means that the sound coming out of the amp is exactly the same as the one going in – just bigger. The amplification processes inside this handcrafted Cyrus chassis have been expertly engineered with complex circuitry making sure that the output is powerful and precise.

The amplfiier contains a 305VA ultra-low noise transformer and through their expertly engineered circuitry they ensure that nothing is added to the signal as it passes through the amplifier. As music volumes drop, it becomes increasingly important that the only sound being issued from a hi-fi system is the music itself. Cyrus Zero Feedback technology means that in tests, the amplifier produces negligible distortion at low volume.

... if you want a wonderfully informative amplifier that communicates the drama in music in a really articulate and precise way, we haven’t heard better for the money.

What Hi-Fi? Cyrus Mono X 300 Signature review

Smart cooling technology

To maintain the precise sound quality Cyrus is known for, but ensure adequate ventilation of our power amps, they have developed a smart cooling system for the Mono X 300 Signature. This system only activates the fan when it’s needed – when you’re listening at high volumes. When the volume drops or silences are detected, the fan automatically switches off so there’s never any unwanted background noise.

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Key Features


  • BFA speaker – Yes
  • Chain output – Yes
  • MC-BUS – Yes

Power Output

  • Watts into 6 Ohms – 319



  • Analogue RCA Phono – 1
  • XLR Balanced – 1
  • Trigger RS-232 -1

Additional information

Weight6.4 kg
Dimensions36 × 21.5 × 7.3 cm

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1 Home Street

10am – 6pm Monday to Saturday
12pm – 5pm on Sunday

There is ample metered parking in the area and 2 car parks nearby. For collecting and dropping off items, there is a loading bay directly outside. We will be delighted to load up your vehicle for you.

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Cyrus Mono X 300 Signature