real atomic technology

Isochrone 10M was specifically designed by Antelope Audio to reach the most demanding audiophiles and audio professionals.

So, if your goal is to set up your studio for maximum performance, you will certainly appreciate a clocking reference that is a staggering 100,000 times more accurate than the quartz oscillators used in most equipment.

10m features


Swiss-made Rubidium core with accuracy of 0.03 ppb (parts per BILLION)


Like anything Antelope Audio just connect, power it on and the 10M is good to go

BNC outputs

8 BNC Outputs of 10 MHz

Atomic Oscillator

Ultra-precise Atomic oscillator with stability of 1 second in 1,000 years


Dual Redundant power supply with automatic switchover


The 10M is the perfect companion to the OCX, OCX-V, Trinity and any 10 MHz reference compatible device

The legendary 10M


Rubidium atomic reference generator

For those refusing to accept compromises in audio quality there is the Isochrone 10M – a Rubidium Atomic Reference Generator based on real atomic technology. The 10M is designed specifically to appeal to the most discerning audiophiles and audio professionals.

The ultimate tool in achieving analog sound

The Rubidium Atomic Clock is the perfect companion to the Isochrone audio master clocks such as the OCX or OCX-V

When connected to the Isochrone 10M, these devices switch over automatically from oven-based crystal to the superior Rubidium Core. Isochrone 10M is the ultimate tool in achieving analog sound. Experts agree that 10M is probably “the best sounding clock” ever produced.

A sturdy mechanical construction

Suited for every environment

The Atomic Clock is distinguished by an extremely sturdy mechanical construction, making it highly resistant to mechanical shocks. In the Antelope tradition of making things easy to use, just connect and power it on; the status lights are visible at a glance and all information is prominently shown on the easy-to-read frequency display.

… My mixes came to life and my low end was punchy and round while my top end had sizzle but not knife stabbing in the ear.”


Rober Dugan Robert has been interested in audio from a very young age and decided to pursue a degree in Audio Engineering. He graduated from SAE Institute of Technology with an outstanding 4.0 GPA. Immediately following, he went on tour all over the world as a Tour Manager, Production Manager, Front of House Engineer, and Monitor engineer working with Grammy winning artist to small bands still trying to make it. Since August 2011 Robert has been working as Production Manager and Front of House Engineer with Mike Posner




    • Atomic Reference Type

Rubidium Ultra-Stable Reasonance- Controlled
Master Oscillator

    • Frequency

10 MHz

    • Frequency Accurancy

Better than 0.03 PPB (parts per BILLION)

    • Long-Term Stability

Better than 0.02 PPB
Typical: 0.05 PPB per month (measured after 6 months
of continuous operation)
First Year < 2 PpB

    • Short-Term Stability

0.03 PPB per second
0.01 PPB per 10 seconds
0.003 PPB per 100 seconds

    • Warm Up Time

8-10 minutes (depends on ambient temperature)

    • Power Supply Type

AC and DC, Dual Reduntant

    • Power Supply Input

100-240V – 50/60 Hz

    • Power Consumption

40 W during the warm-up
17 W at standart operation (after the warm-up)

    • Inrush Current

Maximum 50A at 264 V AC

    • Atomic Clock Output

8 x BNC Sinusoidal, 10 MHz, 70 Ohm, 1 Vpp typical (unload)

    • Humidity

Maximum 80%

    • Dimensions

434 mm (W) x 81 mm (H) x 205 (D)
17″ (W) x 3.2″ (H) x 8″ (D)

    • Phase Noise 10 MHz

-140 dBc per Hz at 10 Hz

    • Operating Temperature


    • Weight

5.7 kg/12.9 lb