LHY Audio OCK-2S is a six-output 10MHz reference master clock for compatible DACs, streamers, network switches and digital transports. Its SC-Cut OCXO, independent output drivers and mixed 50/75-ohm sine- and square-wave outputs make it a flexible timing hub for multi-component systems.

Why it stands out

Six independent outputs

Three sine and three square outputs can serve several compatible components.

Flexible impedance matching

Both 50-ohm and 75-ohm outputs are available.

Low phase-noise OCXO

The internal SC-Cut oscillator is rated at a typical -110dBc at 1Hz offset.

Independent ground control

Output isolation and ground switching help adapt to different system grounding requirements.

Best for

• Multi-device 10MHz audio systems
• DACs and streamers with external clock inputs
• Users needing sine and square wave options
• Systems mixing 50-ohm and 75-ohm clock inputs

Not ideal for

• Devices without a 10MHz reference input
• Users needing word clock or audio data outputs
• Systems requiring phase noise below the OCK-2S rating
• Portable audio systems

EMiUZEK Buying Notes

• Match frequency, impedance, waveform and level to each receiving device before connecting.
• OCK-2S is a timing source only; it does not process or transmit audio.
• Use the ground switches deliberately and allow 60 minutes for optimum thermal stability.

Frequently asked questions

Is it compatible with every DAC?

No, the DAC must accept an external 10MHz reference.

How many devices can it clock?

Up to six compatible devices.

Does it include 75-ohm outputs?

Yes, one sine and one square 75-ohm output.

Is warm-up required?

It works after power-on but reaches optimum stability after about 60 minutes.

Does it replace USB or Ethernet?

No. Audio/data connections remain separate.

When should I choose OCK-2P?

Choose OCK-2P for lower close-in phase noise and its upgraded thermal and power architecture.

HOW TO CONNECT

DAC clocking

Source: OCK-2S
Connection: Matched BNC cable
Output connection: 10MHz
Target: Compatible DAC

Streamer and switch

Source: OCK-2S
Connection: Independent 10MHz outputs
Output connection: Correct impedance
Target: Streamer and network switch

Three-device timing system

Source: OCK-2S
Connection: Separate sine/square outputs
Output connection: Device-matched cables
Target: Transport, DAC and streamer

Technical Specifications

Additional Product Content

📊 Comparison: Which 10MHz Master Clock Is Right for You?

OCK-2S is the value-focused six-output choice; OCK-2P adds lower phase noise and upgraded power/thermal engineering, while Mutec REF10 Nano prioritizes a compact professional reference-clock format.