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Esoteric G1 Grandioso
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ESOTERIC G1 GRANDIOSO

Home > Shop > Electronics > Clocks > ESOTERIC G1 GRANDIOSO

ESOTERIC G1 Grandioso Master Clock Generator

$33,000.00

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SKU: ESO-G1. Category: Clocks. Tags: 10mhz, clock, esoteric, grandioso. Brand: Esoteric
  • Description
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  • SPECIFICATIONS

Product Description

Grandioso G1 – flagship master clock generator

Grandioso G1

Ultrahigh Precision Rubidium Oscillator

Grandioso G1

* when shipped new

An extremely high precision American-made rubidium oscillator with a frequency precision of ±0.05 ppb or ±0.00005 ppm is used as the core of this extraordinarily accurate timing device. This oscillator module has been manufactured to ESOTERIC’s demanding specifications with sound quality and stability being given top priority. The sound quality one would expect from our best model in the master clock generator series has been achieved.

Grandioso G1

Wide Range Clock Buffer Amplifier

Grandioso G1

The clock signal is output by four newly-designed “Wide Range Clock Buffer Amplifiers”, which each have a separate power supply regulator and provide an even wider range than ever before. The discrete circuits use high-speed transistors with excellent high frequency performance, which are perfect for generating digital waveforms for which a high degree of accuracy is required. Combined with a heavy-duty power supply, these circuits greatly contribute to major improvements in sound quality by providing an accurate and stable timing signal to audio devices.


Four 10 MHz Clock Output Terminals and “Adaptive Zero Ground” Mode*

Grandioso G1

The unit provides four terminals that output a 10 MHz sine wave clock, and is equipped with a new “Adaptive Zero Ground” mode that actively drives the ground signal to 0 volts. This greatly reduces noise (random jitter) caused by variation in the ground voltage. Switches on the rear of the unit toggle between the adaptive mode and normal mode for each output terminal, and allow the user to select the buffer amplifier drive method that is just right for their listening preferences.
*The Grandioso G1 is a unit dedicated to 10 MHz output, and can only be connected with compatible devices.


Substantial Power Supply

Grandioso G1

A newly-designed power supply is adopted to maximize the performance of the new wide range clock buffer amplifiers, with a separate power supply regulator circuit assigned to each of the four buffer amplifiers to increase the independence of each channel. The amplifier and power supply are also divided into blocks and connected via the shortest route to ensure drive that is both clean and powerful. A large toroidal transformer, which enables highly efficient and high power actuation, is used as the main transformer and a dedicated El core transformer is used for digital control. A series of multiple capacitors are used for a ripple filter circuit and Schottky barrier diodes are used for quick response supporting fast digital processing, which assists the accuracy of the clock’s signal generation.


External 10 MHz/1 pps Input

A 10 MHz or 1 pps reference signal can also be input externally by connecting a device such as a GPS receiver to an external input terminal. The internal rubidium oscillator is synchronized with a higher center frequency precision clock received from a satellite, and this allows more stable rubidium oscillation than the crystal controlled oscillator built into the external GPS receiver, which makes the most of the advantages of a high precision GPS system.


Custom Coaxial Cables with MIL Standard SMA Connector

Grandioso G1

The all-important internal wiring of the unit uses hardwired connections with custom coaxial cables of the finest quality. These cables adopt MIL-compliant gold plated SMA connectors that were specifically developed for high frequency transmission and original milled brass BNC terminals designed by ESOTERIC to achieve a secure connection, in order to minimize loss of transmission to the utmost limit.


Preheat Function

Grandioso G1

The rear of the unit features a switch that toggles between the mode that completely shuts down the system when the power is turned OFF, and the recommended preheat mode, which continues to supply power to the internal rubidium oscillator. Keeping the rubidium warm reduces waiting time after the power is turned ON and enables the unit to provide its full performance immediately.


Superb Chassis Construction for Optimal Performance

Grandioso G1

Since the high precision nature of the rubidium oscillator makes it delicate and susceptible to external vibrations, special consideration has been made in the chassis construction to control these vibrations. The bottom chassis securing the various components adopts a dual layer structure comprised of two steel plates, and the power transformer and other components are affixed to separate layers in a three-dimensional configuration to prevent interference between neighboring components. Furthermore, the unit features an extraordinarily thick and highly-rigid aluminum panel enclosure and patented ESOTERIC pin point feet (patent no. 40750477 JP) that minimize the small vibrations that could affect clock precision.

 

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