Antelope Audio Isochrone 10MX Rubidium Atomic Word Clock Unit


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  • 10MX is the newest and the premier member of the Isochrone family. It features technologies from two of Antelope's legendary products. The atomic precision of the 10M and the sophisticated jitter-management algorithm of Trinity are combined in a futuristic, 1U rack space enclosure, providing the world's most stable and musical clocking.

    10MX is a fusion of proven technologies and contemporary industrial design, where no compromises are allowed and both build-quality, and performance-excellence are top priority. The new Rubidium Atomic Clock is an epiphany of more than 20 years&' expertise in the digital audio world, making vividly real the clarity, depth, width and 3-dimensionality distinctive of the analog sound.

    10MX is perfectly suited for recording, mixing and mastering environments. Its form factor, occupying only 1U of rack space, makes it ideal for live sound application where rack slots are precious commodity.

    The multiple atomic outputs allow up to 10 devices to be clocked simultaneously over BNC outputs of 10MHz. The unit can also be used as a master clock with 4 outputs, supporting the outstanding sampling rate of up to 768 kHz via BNC. Two more clocking outputs are available via AES and two via S/PDIF.

    The new Rubidium Atomic Clock is equally easy manageable either from the front panel or the intuitive software control panel available for OS X and Windows, connecting via a USB port.


    • Rubidium core with accuracy of 0.05 ppb (parts per BILLION)
    • 4th generation Acoustically Focused Clocking (AFCTM ), employing 64-bit DSP
    • Master clocking up to 768 kHz over 4 WC
    • 2 x S/PDIF and 2 x AES/EBU master clocking outputs up to 192 kHz
    • Atomic clocking compatible with any device that accepts 10MHz reference
    • Utmost ease of operation, just connect it and power it on
    • PC/Mac connection via USB, allowing remote control and firmware upgrades
    • Intuitive Software Control Panel
    • Extremely sturdy mechanical construction
  • Atomic Reference TypeRubidium Ultra-Stable Resonance-Controlled Master Oscillator
    Frequency AccuracyBetter than ±5E-11 @25C (±0.05 PPB)
    AgingDaily* ±2.5E-11 
    Monthly* ±1E-10 
    Yearly ±1E-9 
    (*After 1 day & 1 month of operation respectively)
    Short Term Stabilityt=1s ?3E-11
    t=10s ?1.6E-11
    t=100s ?8E-12
    Time drift in a 24-hr period< 7?s over 0°C to +60°C
    Phase Noise (SSB)1Hz ?-70 dBc/Hz 
    10Hz ?-87 dBc/Hz 
    100Hz ?-114 dBc/Hz 
    1kHz ?-130 dBc/Hz 
    10kHz ?-140 dBc/Hz
    Warm-Up Time8 - 10 minutes (depends on ambient temperature)
    Maximum shock withstandingNon-operating, flight case mounted:
    100m/s2 (~10.2 g*), 11 msec half-sine pulse per IEC 60068-2-27:2008
    Non-operating, in original packing:
    300m/s2 (~30.6 g*), 5 msec half-sine pulse per IEC 60068-2-27:2008
    * g - gravitational acceleration
    Power Supply TypeAC
    Power Supply Input100 - 240 V~
    Power Consumption15 W
    Atomic Clock Outputs10 x BNC Sinusoidal, 10MHZ, 75 Ohm, 1Vpp typical (unload)
    OutputsWord Clock: 4 x BNC
    AES/EBU: 2 x XLR 
    S/PDIF: 2 x RCA
    USBUSB 2.0 Hi-Speed, Type B, only for control
    Word Clock SpecsTTL Level, 75 Ohm Output Impedance
    Operating Temperature0 - 50°C, 32-122 F
    Humidity30 - 80% RH non-condensing
    Dimensions482.6 (W) ?228 (D) ? 44 (H) mm 
    19 (W) x 9 (D) x 1.73 (H) inch
    Weight2.8 kg/6.17 lb
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