Network Master Clock

A 10 MHz network master clock provides an ultra-precise reference signal to compatible audio components such as network switches, streamers and digital-to-digital converters (DDCs). By improving timing accuracy and reducing clock jitter, a high-quality master clock can help optimise the performance of your digital audio system

Clock jitter refers to tiny timing variations in a digital signal. While digital data arrives correctly, excessive jitter can affect the accuracy of digital audio processing. A high-precision external master clock provides a more stable timing reference, helping compatible components perform at their best.

In compatible systems, many listeners report improvements such as greater clarity, improved instrument separation, a wider soundstage, tighter bass and more natural musical presentation. The level of improvement depends on the quality of the connected equipment and the overall system.

Many high-end network switches, streamers, DDCs and DACs include a 10 MHz clock input. Always check that your equipment supports an external 10 MHz reference before purchasing a master clock.

The ideal model depends on your system and performance goals:

• OCK-1S – Excellent entry point for adding an external reference clock.
• OCK-2S – Higher-performance OCXO design for demanding audio systems.
• OCK-2P – Flagship dual-output reference clock offering the highest level of timing precision and flexibility.

An OCXO (Oven-Controlled Crystal Oscillator) maintains the crystal at a constant operating temperature to maximise frequency stability. Compared with conventional oscillators, an OCXO provides significantly lower phase noise and greater long-term accuracy, making it ideal for high-end digital audio.

Phase noise measures the short-term stability of a clock signal. Lower phase noise means cleaner, more accurate timing, which is particularly important in high-performance digital audio systems where precise synchronisation is essential.

Yes. External master clocks use 50-ohm BNC clock cables specifically designed for transmitting precise 10 MHz reference signals. Using high-quality clock cables helps maintain signal integrity between your master clock and connected components.

Many master clocks, including selected LHY Audio models, feature multiple 10 MHz outputs, allowing several compatible devices to share the same ultra-precise timing reference. This ensures consistent synchronisation across your digital audio system.

LHY Audio master clocks combine ultra-low phase noise OCXO technology, precision-engineered linear power supplies and high-quality clock circuitry to deliver an exceptionally stable timing reference. Designed specifically for high-end audio systems, they integrate seamlessly with compatible network switches, streamers and other digital components.