Antelope Audio
10MX Rubidium Atomic Master Clock
Introduced 2015$3,000 MSRP
The Antelope Audio 10MX is the premier member of the company's Isochrone clocking line, combining a Swiss-made rubidium atomic oscillator with Antelope's 4th-generation 64-bit Acoustically Focused Clocking (AFC) DSP to deliver an ultra-stable 10 MHz reference and master clocking up to 768 kHz. Note: the task referenced this product as the "10M," but Antelope's current flagship rubidium clock is the 10MX, the successor model documented on Antelope's site and in its official owner's manual.
MSRP
$3,000
Used market · Good
$4,200
+40% vs MSRP
as of Sep 1, 2026MSRP to used market
From $3,000 at launch to $4,200 today.
Specifications
- Aging
- ±2.5E-11 daily, ±1E-10 monthly, ±1E-9 yearly
- Weight
- 2.8 kg / 6.17 lb
- Outputs
- 10x BNC atomic 10MHz sinusoidal outputs (75Ω); 4x BNC word clock (44.1–768kHz); 2x AES/EBU (XLR, up to 192kHz); 2x S/PDIF (RCA, up to 192kHz)
- Dimensions
- 482.6mm/19" x 228mm/9" x 44mm/1.73" (1U rack)
- Phase noise
- ≤-70 dBc/Hz @1Hz, ≤-87 dBc/Hz @10Hz, ≤-114 dBc/Hz @100Hz, ≤-130 dBc/Hz @1kHz, ≤-140 dBc/Hz @10kHz
- Power consumption
- 15W, 100–240V AC
- Frequency accuracy
- Better than ±5E-11 @ 25°C (±0.05 PPB)
- Clocking technology
- 4th Generation Acoustically Focused Clocking (AFC), 64-bit DDS/DSP
- Dimensions w x d x h
- 482.6mm/19" x 228mm/9" x 44mm/1.73" (1U rack)
- Oscillator atomic reference type
- Rubidium Ultra-Stable Resonance-Controlled Master Oscillator, rubidium core accuracy 0.05 ppb
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