Antelope Audio 10MX Rubidium Atomic Clock
Description
Antelope Audio 10MX Rubidium Atomic Clock
The 10MX occupies just 1U of rack space while delivering the atomic precision that locks your entire signal chain into rock-solid temporal alignment. This unit combines rubidium oscillator technology with Antelope's proprietary 64-bit acoustically focused clocking algorithm to eliminate jitter at the source—the result is audibly cleaner, more three-dimensional sound with restored analog warmth and spatial clarity. Built on over 20 years of Antelope expertise, the 10MX represents the fusion of the legendary 10M's atomic stability and the Trinity's sophisticated jitter-management approach.
Clocking Performance & Stability
The 10MHz rubidium reference achieves frequency accuracy of ±0.05 PPB (parts per billion), with short-term stability reaching 8E-12 at 100 seconds and phase noise controlled to -140 dBc/Hz at 10 kHz. Daily aging remains below ±2.5E-11, ensuring your tone stays locked and coherent through long recording sessions and live tracking. Warm-up time of 8–10 minutes brings the unit to full operating specification quickly, making it practical for both permanent studio setups and portable mastering rigs that demand tour-ready reliability.
Connectivity & Output Architecture
Ten 10 MHz atomic outputs on BNC connectors allow simultaneous clocking of up to 10 devices, while four word clock outputs support sampling rates up to 768 kHz. Additional mastering flexibility comes from two AES/EBU and two S/PDIF outputs rated to 192 kHz, ensuring compatibility across analog-domain converters, tape machines, and legacy gear. A word clock input accepts 44.1–384 kHz signals for external synchronization when needed.
Key Features
- Rubidium ultra-stable resonance-controlled master oscillator with ±0.05 PPB frequency accuracy at 25°C
- 10 × 10 MHz atomic outputs (BNC, 75 Ohm, 1Vpp typical)
- 4 × word clock outputs supporting 44.1–768 kHz on BNC connectors
- 2 × AES/EBU and 2 × S/PDIF master clocking outputs up to 192 kHz
- 1 × word clock input for external synchronization (44.1–384 kHz)
- 4th-generation acoustically focused clocking with 64-bit DDS
- Phase noise: -70 dBc/Hz (1 Hz), -87 dBc/Hz (10 Hz), -114 dBc/Hz (100 Hz), -130 dBc/Hz (1 kHz), -140 dBc/Hz (10 kHz)
- Short-term stability: 3E-11 (1s), 1.6E-11 (10s), 8E-12 (100s)
- Warm-up time: 8–10 minutes
- 1U rack enclosure, 482.6 × 228 × 44 mm, 6.17 lb
- USB 2.0 control panel for Mac (OS X 10.9+) and Windows (7/8/8.1/10) with front-panel operation
- AC powered, 15 W consumption; non-operating shock rating 100 m/s² per IEC 60068-2-27:2008
The 10MX delivers the atomic clocking stability that anchors your entire recording and mastering chain, giving you the temporal foundation needed to capture the true character of every performance.
More Information
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Reviews
At a Glance
The Antelope Audio 10MX is a 1U rubidium atomic clock that eliminates jitter at the source, delivering audibly cleaner, more three-dimensional sound with restored analog warmth—essential for mastering and high-end recording sessions where timing precision translates directly to sonic purity. Ten 10 MHz outputs and four word clock outputs (up to 768 kHz) let you clock up to 10 devices simultaneously, making it practical for both permanent studio installations and portable mastering rigs. Choose it when atomic stability and spatial clarity matter more than budget constraints.
Who This Is For
Great for
- ✓ Studio Sessions
- ✓ Mastering
- ✓ High-end recording
Not the best pick for
- – Practice
- – Home Recording on a budget
Frequently Asked Questions
What is a rubidium atomic clock and why does it matter for recording?
A rubidium oscillator maintains frequency accuracy to ±0.05 parts per billion, virtually eliminating jitter (timing distortion) at the source. This translates to cleaner, more three-dimensional sound and restored analog warmth across all clocked devices—audibly meaningful in mastering and high-end recording environments where timing precision directly impacts sonic purity.
How many devices can I clock with the 10MX?
The 10MX provides ten 10 MHz atomic outputs on BNC connectors, four word clock outputs (up to 768 kHz), two AES/EBU outputs, and two S/PDIF outputs, allowing you to clock up to 10 devices simultaneously. A word clock input also accepts external sync signals from 44.1–384 kHz for flexible integration.
How quickly does the 10MX reach full operating spec?
Warm-up time is 8–10 minutes, bringing the unit to its full ±0.05 PPB frequency accuracy and specified phase-noise performance. This makes it practical for both permanent studio installations and portable mastering setups that need reliable, repeatable performance session after session.
Is the 10MX compatible with my analog converters and tape machines?
Yes. The 10MX offers ten 10 MHz atomic outputs, four word clock outputs, two AES/EBU, and two S/PDIF master clock outputs, ensuring compatibility across analog-domain converters, tape machines, and legacy gear up to 192 kHz on digital outputs.
What makes the 10MX different from the 10M or Trinity?
The 10MX fuses the legendary 10M's atomic stability with the Trinity's sophisticated jitter-management approach, combining rubidium oscillator technology with Antelope's proprietary 64-bit acoustically focused clocking algorithm to deliver audibly cleaner, more three-dimensional sound in a compact 1U footprint.