Isochrone OCX

Audio master clock, maintaining stability and preserving sonic integrity

It is crucial that a master clock be flawless, and the Isochrone OCX exists to meet this need. Uncompromised design has created the most stable, best sounding master clock available.

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A new quality standard in professional
master clocks

The Antelope's Isochrone OCX emerges as the new quality standard in professional master clocks. A master clock is the heart of the digital studio, essential to maintaining stability and preserving sonic integrity.

Jitter Management Module

Low jitter operation is critical in the modern studio. Antelope's Jitter Management Module implemented in Isochrone OCX makes jitter essentially nonexistent. Adaptive Loop Filtering is taken to the next level with a sophisticated DSP Based Multistage IIR filter, ensuring a jitter free, great sounding studio.

Oven-controlled environment

Oscillator accuracy is compromised when exposed to temperature fluctuations. The Isochrone OCX addresses this completely with oven control. The oven's temperature controlled environment allows unparalleled oscillator stability.

Atomic clock input

The Isochrone OCX can be locked to the most accurate clock on Earth - the Atomic clock. A studio can truly achieve perfect stability with the power of Atomic Clock. The OCX, OCX-V and Trinity are the only Master Clocks capable of locking to this unprecedented technology.

OCX Master Clock Front and Rear panels

OCX Master Clock

Oven Controlled Discrete Transistor Crystal Oscillator for lowest jitter
Atomic Clock Input resolves to Rubidium Clock for perfect stability
Jitter Management Module improves sonic performance
Sample Rates 32-192 kHz
Factory calibrated to better than +/- 0.02PPM accuracy via Atomic Clock
Can be recalibrated in the field to an Atomic Clock for better than +/- 0.02PPM accuracy
W/Cx256 "Superclock" Output for Digidesign Pro-Tools systems
Outputs multiple, divisible sample rates
8 Word Clock Outputs
2 AES/EBU Outputs
2 S/PDIF Outputs
Digital Trends Antelope Audio's Clocks review, by Sergey Dolgov. Shou-Master magazine, Issue 1/2, 2012 (Russian)
Isochrone OCX & 10M Clock Generators review by Jessica Thompson in Tape Op magazine, available also online, 2010 (English)
Isochrone OCX User Manual
Isochrone OCX Data Sheet
In The Box Isochrone OCX
Power cord
Owner's manual
Warranty card
Dimensions Width: 483 mm/19”
Height: 44 mm/1.75"
Depth: 175 mm/7"
Weight 2.3 kg/5.07 lb