Esoteric G-0s/Rb Master Clock Generator

Here we have a G-0S with Rb Master Clock Generator front panel from Japanese company Esoteric. It has been designed to synchronise two digital components so that data can be transferred precisely, for more information please read Esoteric’s more detailed description below. It comes in very good condition with some light blemishes to the left side of the unit and is supplied with original packaging, mains cable, plus our standard three month warranty.
Esoteric Say….
Every digital component has a clock oscillator to operate internal, integrated circuit chip sets. If you connect more than two digital components, each component has to be operated by the same clock signal (or “synchronized”). If these two components are operated by their own separate internal clock signals, precise data exchange cannot be expected. One component has to be the slave of the clock signal of the other to achieve a more precise synchronization.
If you add a Master Clock Generator to your system, all the digital components are synchronized by the master clock signal which is several times more precise than the components’ internal clock oscillator. In this implementation the digital system is uniformly controlled by the highly precise external master clock generator. Adding an Esoteric MCG to your system is also valuable in that the oscillator has its own chassis and power supply, separate from other devices. Ideal clock operation is possible without receiving any influence from the surrounding components to the oscillator. When you use an external master clock device, the precision of the internal crystal clock of the connected devices is an important factor to system sound quality because the connected devices utilize an external master clock signal to synchronize to their internal clock, not that they use the input clock signal itself. Therefore the precision of the internal crystal clock of each component is also important for system sound quality.
The Esoteric G-0s employs a rubidium clock oscillator, the precision of which is +/-0.05ppb (ppb = part per billion, = 0.00005ppm). No component other than the G-0s and G-0Rb has ever employed such a highly precise master clock system.
With the advent of digital equipment using higher sampling frequencies than ever, 176.4 kHz and 192 kHz word clocks(sync signals) are made available in addition to conventional44.1 kHz, 48 kHz, 88.2 kHz and 96 kHz clocks. As an additional plus, the output circuitry consists of 3separate channels with a total of 6 output terminals, thus offering the capability of handling a variety of audio equipment controlled by different word clocks. Also, each of the 3 output channels is switch-selectable between 1xFs,2xFs, and 4xFs, so you can, for example, get an 88.2 kHz and a 176.4 kHz machine synchronized by connecting them to the single G-0s.

The G-0s uses an advanced rubidium oscillator (monthly precision variation: projected within ±0.05ppb) that generates astonishingly super-accurate clocks.

It is also possible to connect external reference frequency oscillators to the G-0s. Using this capability, you can, for example, readily bring in a higher precision oscillator when made available in the future.

Some universal players use clocks different from the ones used by CD players to process both the video and audio signals at the same time.

The G-0s comes with a 100 kHz clock output intended for universal players (in PAL FILM mode, the output is switched to 96 kHz). If your universal players are 100 kHz-capable, you can control them by this high-precision clock.

The PAL (European TV format) film source is a better image quality than NTSC discs provide. However, PAL video system is standardized at 25 frames per second while the PAL film source discs use the rate of 24 frames per second. So, if these discs are played back without inserting one additional frame per second in the process of conversion, the sound pitch maybe higher than is expected. To play PAL film source material correctly, it is necessary to reduce the play speed by 4% and play at 24 frames per second. To meet this requirement, the G-0s is designed to output clock frequencies of 96% of 48/96/192 kHz (i.e., 46.08/92.16/184.32 kHz).

To play PAL film source material, connect the Esoteric UX-1 or any other Universal Player that is equipped to accept 96% clock frequencies.