Antelope Audio 10MX Rubidium Atomic Clock

Antelope Audio 10MX Rubidium Atomic Clock

The 10MX occupies just 1U of rack space while delivering the atomic precision that defines professional mastering and high-end recording environments. 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 negligible drift during critical sessions. Warm-up time of 8–10 minutes brings the unit to full operating specification quickly, making it practical for both permanent installation and portable mastering rigs.

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 demanded by mastering engineers, recording studios, and broadcast facilities where timing accuracy directly translates to sonic purity and dimensional retrieval.