

Antelope Audio OCX HD
For over a decade, Antelope's legendary OCX Master Clock has been a dominant force in the audio world.
This legacy now continues with the newest master clock by Antelope Audio Isochrone OCX HD.
OCX HD raises the bar yet again, delivering sample rate support of up to 768 kHz, Antelope’s best-in-class 4th generation Acoustically Focused Clocking (AFC) jitter management algorithm and oven-controlled crystal oscillator.
OCX HD Master Clock offers a great variety of clocking options - 10 configurable in pairs Word Clock Outputs on BNC, four AES/EBU Outputs and two more on S/PDIF. This vast assortment of connectivity makes the OCX HD the most versatile audio master clock on the market, while proven, proprietary clocking technology delivers the most musical and reliable audio sync generation on the market.
Additionally, OCX HD offers two Word Clock Inputs and a Video Sync Input, which can resolve to a huge variety of SD and HD formats, as well as clock distribution with gear-boxing, and pull-up and pull-down rates, as featured in the triple clock powerhouse, Trinity Master Clock. A 10 MHz Input allows for syncing with Antelope's newest Atomic Clock - 10MX.
- 1 Video input
- 1 Atomic clock input
- 2 Word Clock inputs
- 1 AES/EBU input
- 2 S/PDIF inputs
- 2 S/PDIF outputs
- 4 AES/EBU outputs
- 10 Word Clock outputs
- USB for software control
Product Overview
Product Specifications
Product Videos
Shipping Information
We provide free shipping on most items and Next Day delivery on all orders completed before 12pm (noon!) so you don’t have to pay extra or wait long to start enjoying your new equipment.
We use DPD to ship the majority of our orders within the UK. International locations will vary, learn more here.
Product Support
We work with some of the world’s leading audio manufacturers to provide everything from the trusted studio classics to modern, innovative technologies that help you to push sonic boundaries. We pride ourselves on offering the best support both before and after sale. If you have any questions, please get in touch.

Antelope Audio OCX HD
New Gear FAQs
Are all new items in stock?
With such a wide range of products we cant stock everything at all times.
The product page will display if an item is in stock. If it is marked as pre-order, you can place your order as normal and await its arrival into stock.
Please get in touch for an estimated shipping date. This may vary depending on stocking level with the manufacturer and/or distributor.
What warranty do you get with new gear?
Minimum 1 year manufacturer's warranty. Some manufacturers may also extend this (please see their respective websites for more information).
Can I part exchange used gear towards new gear?
Of course! Whether youre just looking to sell unused gear or looking to upgrade, get in touch here to discuss.
Can I test the equipment before I buy it?
We have a demo room at MNPA HQ where you are welcome to come and try out the equipment we have in stock. We’re not a shop and open to the general public so please get in touch via our Contact Form to book an appointment before coming to see us.
