Antelope Audio OCX-HD 768 kHz HD Master Clock
Description
Antelope Audio OCX-HD 768 kHz HD Master Clock
The OCX-HD sits elegantly in a single 1U rack space, delivering the master clock stability that has made Antelope Audio's OCX line legendary across mastering, recording, film scoring, and live sound environments for over a decade. Its compact footprint—just 482.6 mm wide and 44 mm tall—fits seamlessly into any technical setup while maintaining the precision and connectivity that professional studios demand.
Clocking Performance & Accuracy
Built on 4th-generation Acoustically Focused Clocking (AFC) technology paired with a 64-bit DDS engine and oven-controlled crystal oscillator, the OCX-HD delivers clock calibration better than ±0.001 ppm with stability locked at ±0.02 ppm. This level of precision ensures rock-solid sync across your entire signal chain, eliminating jitter-induced artifacts that degrade audio fidelity in critical listening and mastering applications.
Connectivity & Flexibility
The OCX-HD provides exceptional routing flexibility with 10 Word Clock outputs (up to 768 kHz), 4 AES/EBU outputs (up to 192 kHz), and 2 S/PDIF outputs (up to 192 kHz), making it the most versatile master clock available. Comprehensive input options—including 2 Word Clock inputs, video sync input for SD/HD formats, atomic clock input, 2 S/PDIF inputs, and 1 AES/EBU input—enable integration with virtually any studio ecosystem and external reference source.
Key Features
- Sample rate generation: 32, 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384, 705.6, 768 kHz
- 10 Word Clock outputs up to 768 kHz on BNC connectors
- 4 AES/EBU outputs (up to 192 kHz) for DAW and mastering console integration
- 2 S/PDIF outputs (up to 192 kHz) for consumer and semi-pro gear
- 2 Word Clock inputs (up to 768 kHz) for external reference sync
- Universal video input accepting SD and HD formats with pull-up/pull-down rates
- Atomic clock input (10 MHz) for calibration via Antelope's 10MX atomic reference
- 4th-generation Acoustically Focused Clocking with 64-bit DDS and oven-controlled oscillator
- Clock accuracy < ±0.001 ppm with stability < ±0.02 ppm at 64.5°C
- Compact 1U form factor: 482.6 mm W × 230 mm D × 44 mm H; 2.65 kg
- Universal AC power supply (95–245V); maximum 20 watts consumption
- 3 recallable presets with Rate Lock protection for live session stability
The OCX-HD represents the evolution of master clock technology, combining Antelope's proven jitter management with modern sample rate support and comprehensive connectivity—essential architecture for any facility where timing precision directly impacts audio quality.
More Information
| Condition | New |
|---|---|
| Country of Manufacture | Bulgaria |
Reviews
At a Glance
The Antelope Audio OCX-HD is a 1U master clock delivering sub-0.001 ppm accuracy across sample rates up to 768 kHz, with 10 Word Clock outputs and comprehensive AES/EBU, S/PDIF, and video sync inputs. It's built for live sound engineers, touring operations, and session professionals who need rock-solid clock stability across multiple devices without audible jitter degradation. Choose it when you're running complex setups with multiple interfaces, consoles, or external sync sources and demand the precision that keeps every component locked together night after night.
Frequently Asked Questions
What sample rates does the OCX-HD support?
The OCX-HD generates and distributes clock signals at 32, 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384, 705.6, and 768 kHz. Word Clock outputs support all rates up to 768 kHz, while AES/EBU and S/PDIF outputs max out at 192 kHz.
How many output connections does it have, and what types?
The OCX-HD provides 10 Word Clock outputs on BNC connectors, 4 AES/EBU outputs, and 2 S/PDIF outputs, giving you the flexibility to clock multiple interfaces, converters, and mixing consoles simultaneously.
Can it sync to external clock references or video?
Yes. The OCX-HD accepts 2 Word Clock inputs up to 768 kHz, an atomic clock input (10 MHz), a universal video input for SD/HD formats, and 2 S/PDIF inputs, allowing integration with virtually any external sync source or reference standard.
What makes the OCX-HD's clock accuracy special?
It uses 4th-generation Acoustically Focused Clocking with a 64-bit DDS engine and oven-controlled crystal oscillator, achieving calibration accuracy better than ±0.001 ppm and stability locked at ±0.02 ppm—eliminating jitter-induced artifacts in critical listening and mastering applications.
Does it fit standard rack configurations?
Yes. The OCX-HD occupies just 1U of rack space (482.6 mm wide × 44 mm tall × 230 mm deep) and draws a maximum of 20 watts from a universal AC supply, making it compatible with any standard 19-inch rack.