Product Details


Precision pulses breathe new life into Digital Audio with an all-new Master Clock Generator for the Hi-Res era.

The CG-10M is a master clock generator delivering an accurate signal to allow Digital-to-analog converters (DACs) to perform at their best.

Cg 10 master clock generator circuit

New Reference OCXO – an Oven-controlled Crystal Oscillator

Since the temperature has a huge effect on the accuracy of the crystal oscillator, minimizing temperature changes and maintaining it at an ideal level is extremely important in order to generate an accurate clock signal. The CG-10M employs an innovative oven-controlled crystal oscillator, the TEAC Reference OCXO to reduce oscillation frequency fluctuations caused by temperature changes.

A class-leading high-precision clock

Thanks to the TEAC Reference OCXO, the CG-10M delivers a precision 10MHz clock signal – within ±3 ppb of frequency temperature characteristics and within ±0.1 ppm of frequency precision – to USB DACs and digital players. A unique laser-engraved serial number and the TEAC Reference OCXO logo on every OCXC case are proof of the rigorous quality inspection undertaken during the manufacturing process.

ppm=10-6, ppb=10-9
Frequency temperature characteristics: A value of frequency fluctuation caused by temperature change
Frequency precision: An actual frequency range

Cg 10m master clock generator outputs

Four BNC clock output connectors

Four gold-plated BNC connectors (50 ohms) are provided to deliver clock signals to multiple devices. Up to four devices that support a 10MHz input may be connected simultaneously, including USB DACs, network players, and SA-CD players.

Cg 10m master clock generator circuitry board

Independent and isolated circuit design

Each circuit in the CG-10M – from the power supply section to the buffer-amp at the output stage, – is completely isolated to prevent cross-interference when multiple devices are connected to the BNC connectors.

By incorporating a buffer-amp into each circuit, no degradation of the signal waveform occurs when the generated clock signal is shared by several devices.

Cg 10m oven status meter

Oven Status Gauge for clock stability monitoring

The OVEN STATUS analog gauge located in the middle of the unit, a TEAC trademark in recent years, shows the stability of the crystal oscillator when in use. As the temperature of the oven that contains the crystal oscillator reaches the ideal temperature for accurate clock generation, power consumption of the oven decreases and the gauge points to zero, signaling to the user that the digital processing on the connected device is now controlled by an extremely accurate 10MHz clock signal.

The gauge is backlit-type with a dimmer control (including the ability to completely switch the backlight off).

* The oscillator is usually stable about 2 minutes after the power is turned on. However, at least 10 minutes are necessary for the clock to reach an ideal condition.

Cg 10m master clock generator toroidal core

Toroidal-core power transformer

A high-capacity, toroidal-core power transformer constantly supplies a constant, stable current that contributes greatly to the efficacy of the crucial clock generation and its subsequent high-precision output.

Cg 10m b w insulator

Three-position, patented ‘Pin-Point’ feet for perfect stability

The CG-10M employs TEAC's patented ‘Pin-Point’ feet. These comprise two separated metal sections in integrated housing. One is has a spiked top and is attached to the bottom of the chassis, the other is a basin-shaped base that hangs down from the spiked section with a flange-shaped cup for frustration-free installation.

Cg 10m master clock generator pinpoint foot

Three ‘Pin-Point’ feet are used for support, two at the front and one at the rear, for excellent stability, even on an uneven floor.

As a result, the three ‘Pin-Point’ feet help improve the accuracy of clock oscillation by minimizing vibrations and resonance. This, in turn, reduces mid and low-frequency muddiness, improves the soundstage, and enhances fine sound detail.

* Japan patent No. 4075477 and No. 3778108

A robust full-metal chassis, combined with a A4-size footprint

Designed to match the successful Reference 500 series, the CG-10M features aluminum panels and a robust metal chassis (that also isolates it from electromagnetic noise).

Spec description

Clock Outputs
Connectors BNC×4 (gold-plated)
Output Sampling Frequency 10MHz
Output Impedance 50Ω
Output Level 0.5Vrms (sine wave)
OCXO (Crystal Oscillator)
Clock stabilization time 2 minutes
Frequency temperature characteristics within ± 3ppb (when shipped new)
Frequency precision within ± 0.1ppm (when shipped new)
US/Canada AC 120V, 60Hz
UK/Europe AC 220-240V, 50Hz
Power Consumption
warming up
US/Canada 15.4W
UK/Europe 15.8W
US/Canada 10.0W
UK/Europe 10.8W
Dimensions 290(W)×84.5(H)×248.7(D)mm /
Weight 3.6kg / 7.9 lbs.
Operating Temperature +5˚C to +35˚C
Operating humidity range 5% to 85% (no condensation)
Storage Temerature -20˚C to +55˚C
Accessories Power cord, Pads×, Owner’s Manual (including Warranty Card)

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