MUTEC REF10 Black – 10 MHz Reference Master Clock for Audiophiles

The Mutec REF10 Black is a high-end 10 MHz reference clock generator designed for the most demanding audio applications. Featuring a handcrafted, oven-controlled OCXO oscillator, the REF10 sets new standards in ultra-low jitter and clock precision. It significantly enhances the sound quality of digital audio systems – from DACs and music servers to re-clockers and master clocks. Developed and manufactured in Germany, the REF10 exemplifies engineering excellence and reliability.

Key Features

• Handcrafted ultra-low phase noise OCXO oscillator
• 8 galvanically isolated BNC outputs – 2 x 50 Ω and 6 x 75 Ω
• High slew-rate 10 MHz square wave signal
• Multi-stage linear power supply with dedicated OCXO isolation
• Sub-Hz optimized, ultra-low noise power supply architecture
• Rack-mountable (2U) with optional brackets

Digital precision that you can hear

The REF10 is engineered for maximum stability in the short-term time domain – which is critical for digital audio quality. Unlike "atomic clocks" that focus on long-term frequency stability, the REF10 delivers superior phase noise and jitter performance, achieving around 22 fs (1–100 Hz). This results in a purer audio signal and significantly enhanced stereo imaging and spatial detail.

Applications

• Professional and audiophile-grade DAC systems
• High-end music servers and streamers
• Digital re-clockers and master clocks
• Mastering studios and high-end recording setups

Technical Specifications (Summary)

• Oscillator: 10.000 MHz OCXO
• Frequency stability: ±0.01 ppm (as shipped), <0.2 ppm (after 10 years)
• Outputs: 8 x BNC (2 x 50 Ω, 6 x 75 Ω)
• Signal format: square wave, 10 MHz, 2 Vpp, 50:50 duty cycle
• Phase noise: ≤–116 dBc/Hz (1 Hz), ≤–170 dBc/Hz (noise floor)
• Jitter: approx. 22 fs (1–100 Hz)
• Power supply: internal linear PSU, 90–240 V AC, 50–60 Hz
• Power consumption: 12 W (warm-up), 8 W (operation)
• Dimensions: 196 × 84 × 300 mm (chassis)
• Weight: approx. 4.35 kg

Construction and Materials

The REF10 features a 1.5 mm thick steel chassis for optimal shielding, and a stylish anodized aluminum front panel with silk screen or anodic print. Every detail – from layout to EM shielding – reflects MUTEC’s commitment to technical and visual excellence.

Included in the Box

• MUTEC REF10 Black 10 MHz Master Clock
• Power cable
• Technical documentation

Why choose the MUTEC REF10 Black?

The MUTEC REF10 Black is the ultimate upgrade for any high-quality digital audio system. With precision timing, ultra-low jitter, and unmatched build quality, it unlocks higher clarity, improved dynamics, and a natural soundstage. Whether in the studio or an audiophile home setup, the REF10 is the new benchmark for digital accuracy and sonic excellence.