Digital Made Divine: Japanese-Made Esoteric G-05 Master Clock Generator with Proprietary Technology Works with K and N Series Gear, or Players with 10MHz Clock Input

Dramatically elevate the performance of even reference-level digital sources with the Esoteric G-05 Master Clock. Equipped with three independent power supplies that directly supply the optimum voltage to each circuit block, a proprietary Master Sound TC temperature control system, 128-step controlled heater, and the Esoteric SXT-03 custom crystal oscillator, the Japanese-made G-05 seamlessly jibes with Esoteric K and N Series components — as well as other digital players with a 10MHz clock input. 

Anchored by a completely in-house developed OCXO clock module, the 22-pound G-05 possesses an Esoteric-HCLD buffer circuit that can output a pure 10MHz sine wave via its powerful current transfer capability. Four 10MHz sine wave clock output terminals, frequency precision within ±0.01ppm, custom-designed internal coaxial cables, and absolutely stunning fit-and-finish architecture round out a component that will up the musicality, naturalism, pacing, dynamics, and clarity of what you hear to remarkable degrees.

We encourage you to read more in-depth details on the technology and construction surrounding G-05 below. And remember that a three-year manufacturer warranty and our Satisfaction Guarantee provide further protection on your investment. 

Manufactured Clock Module
The Master Sound Discrete Clock in G-05 is entirely developed by Esoteric in-house — from the selection of the crystal oscillator to the temperature control circuit and its control program to achieve high precision, all completed in a unique discrete circuit. Esoteric paid close attention to every detail and improved the quality of musical expression by designing its own crystal oscillator circuit, previously packaged as a general-purpose module, into a unique discrete circuit to produce tones closer to engineers' ideals.

SXT-03 Custom Crystal Oscillator
Crystal clocks generally have a natural timbre, low phase noise, and excellent stability when combined with advanced temperature control systems. In addition, as the clock signal is generated by oscillation, there is a strong correlation between the physical properties of the material and the final sound quality achieved. Larger crystals have greater self-oscillation and a greater oscillation margin, even with greater resistance in the circuit, making the oscillation more stable. G-05 is equipped with the Esoteric SXT-03, a large custom crystal oscillator with ideal electro physical properties. The raw crystal material is slowly grown over a long period of time and then SC-cut (Stress Compensated Cut) with excellent temperature characteristics.

Master Sound TC Proprietary Temperature Control Program
Crystal frequency accuracy is affected by temperature. Therefore, temperature control is the most important factor in maintaining high clock accuracy. Esoteric's proprietary Master Sound TC is a total temperature control system that maximizes crystal performance. The company developed not only the hardware but also the control software in-house to ensure that the Master Sound Discrete Clock delivers the highest possible performance. In a typical OCXO, crystals are stored in a hot oven and kept at a constant temperature. However, crystals differ in the temperature at which they are most stable. In the Master Sound TC system, the oven temperature is controlled by a program customized for each crystal to ensure that each crystal is always at the right temperature for stable performance. The result is an extremely natural and pure clock output with excellent musicality.

128-Step Multi-Step Controlled Heater
The heater, which maintains a uniform temperature inside the oven, is also a concentrated Esoteric specialty. The heaters in ordinary modules are simply controlled to repeatedly turn on and off in conjunction with the falling and rising temperatures inside the oven, but in the Master Sound Discrete Clock, the temperature is finely controlled by a heater with 128 steps of multi-step control. In addition, by minimizing the current fluctuations that occur when the heater is turned on and off, the adverse effects of current fluctuations on the crystal oscillator circuit are eliminated.

Esoteric-HCLD Output Buffer Circuit
G-05 is equipped with the highly acclaimed Esoteric-HCLD output buffer amplifier circuit found in the Grandioso C1X preamplifier. It takes advantage of its powerful current transfer capability and 180MHz wide frequency response to deliver pure 10MHz sine wave clock signal to connected digital players.

Unique Chassis Construction
The chassis is specially designed for vibration-sensitive master clocks. The front and side panels are made of heavy-duty, thick-walled aluminum to suppress external vibrations. The Master Sound Discrete Clock module inside the chassis is freely mounted and grounded by its own weight without the use of mounting screws. The isolation feet, machined from steel and supported at three points, use a special mounting method that uses the weight of the chassis to connect to the bottom plate. By eliminating as many screws as possible for mounting the clock module and isolation feet, and by avoiding the stress concentration caused by screwing these vibration-sensitive components together, a natural vibration damping effect can be achieved, resulting in superior sound quality. In addition, the top plate has a semi-floating structure that is not fixed with screws, resulting in an open sound.

Custom Coaxial Cables with MIL-Standard SMA Connectors
Special custom coaxial cables, carefully selected for sound quality, are used for the critical wiring inside G-05. The connectors are gold-plated SMA connectors that comply with MIL standards. The output connectors are gold-plated BNC connectors with precisely matched impedance to increase transmission reliability and reduce loss.