10 MHz OCXO Master Clock Generator

A precision clock for audiophiles, the Gustard C16 replaces standard oscillators in digital audio sources, delivering cleaner, more precise timing for improved soundstaging, focus, and musical detail.

Stable OCXO core for consistent timing

The C16 uses a custom SC-cut OCXO (oven-controlled crystal oscillator), offering stability and ultra-low noise compared to standard SPXO femtosecond crystals. Its low near-end phase noise translates to tighter rhythm and reduced timing jitter. 

Multiple BNC outputs with isolation control

Six BNC outputs—split into three direct and three isolated—provide versatile options to feed one or multiple devices. The square wave signal, preferred by many DACs, enhances compatibility and reliability across your system. 

User-selectable output characteristics

Front-panel “Vivid” and “Gentle” buttons let you choose different phase profiles. LEDs flash during a ~15-minute warm-up, after which outputs stabilize. You can override this delay for immediate use. 

Purpose-built power and layout

Built-in toroidal transformer and discrete linear power supply ensure low ripple and thermal stability. The clean internal layout supports quick voltage response and fosters consistent clock output. 

Product highlights

• SC-cut OCXO, low near-end phase noise—≥100 dBc at 1 Hz

• Frequency stability: ±50 ppb; accuracy: ±300 ppb

• Six 10 MHz BNC outputs (3 direct, 3 isolated); square wave ≥7 dBm @ 50 Ω

• User-selectable output modes: “Vivid” or “Gentle”

• Quick warm-up override via front buttons

• Discrete linear power, toroidal transformer

• Low power draw (<15 W); beige/black chassis, 2.5 kg

Specs

• Output frequency: 10 MHz square wave, ≥7 dBm @ 50 Ω

• Phase noise: –100 dBc @ 1 Hz typ; jitter far lower than femtosecond crystals

• Accuracy/Stability: ±300 ppb / ±50 ppb

• Power: IEC 115/230 VAC, <15 W

• Control: Dual-mode buttons; LED warm-up indicator

• Dimensions: 220 × 50 × 170 mm chassis

• Weight: 2.5 kg (packaged) 

What’s included

• Gustard C16 clock generator

• IEC power cable

• BNC clock cable(s)

• Quick start guide (English/Chinese)