Rega Mercury – Reference Preamp with DAC & Headphone Amp

The Rega Mercury is a no-compromise solid-state pre-amplifier built to unlock the full resolution of a high-end hi-fi system. With a fully discrete symmetrical signal path, an ultra-low noise floor, a high-performance DAC with USB and S/PDIF inputs, and a discrete headphone amplifier, it’s designed to preserve micro-detail and dynamic contrast with effortless control.

Key Features

• Ultra-low noise, reference design: Preserves subtle detail and dynamics by keeping the noise floor exceptionally low
• Fully discrete symmetrical signal path: Differential, fully symmetrical topology engineered for high linearity and minimal distortion
• High-performance DAC onboard: Supports USB plus S/PDIF coaxial and optical inputs for flexible digital integration
• Galvanically isolated asynchronous USB: Reduces noise transfer from source devices and supports high-resolution PCM and DSD64 (DoP)
• Discrete headphone amplifier: High voltage/current drive to handle both low- and high-impedance headphones with confidence
• Full-colour IPS display + Orbit remote: Clear visual feedback and convenient, backlit remote control from the listening position

Customer Benefits

Mercury is built for listeners who want transparency without edge, and control without masking detail. Its ultra-quiet architecture helps reveal room ambience, texture in vocals, and fine harmonic structure, while the integrated DAC and headphone amp make it easy to build a clean, streamlined system around a single reference-grade control centre.

Quick Specs

• Digital inputs: S/PDIF coaxial + optical (16–24-bit, 32–192 kHz); USB (16–32-bit, 44.1–192 kHz PCM or DSD64 DoP, asynchronous)
• Analogue inputs: 1 × balanced line in; unbalanced line inputs for inputs 2–5 plus record in
• Outputs: Balanced pre out; unbalanced pre out; record out
• Preamp THD+N: Typically 0.001% @ 1 kHz (2 V unbalanced / 4 V balanced, 0 dB gain)
• Preamp frequency response: 8 Hz to 28 kHz (-0.5 dB points, 0 dB gain, balanced in/out)
• DAC THD+N: Typically 0.0045% @ 1 kHz, 0 dBFS, 2 V pre out
• Headphone max level: 2.5 W @ 33 Ω (0.1% THD+N); 0.5 W @ 240 Ω (0.1% THD+N)
• Power consumption: 50 W
• Standby power: 0.4 W (auto-standby after 20 minutes with no signal)
• Dimensions: 43.5 × 9.7 × 38.0 cm (W × H × D)
• Weight: 14 kg

What’s in the Box

• Rega Mercury pre-amplifier
• Orbit remote control
• 2 × AAA batteries (for remote)
• Screwdriver (for Orbit remote batteries)
• Reference mains lead
• 2 × trigger cable
• Couple 3 interconnect

Use Cases / Ideal For

Ideal for reference stereo systems needing a quiet, transparent control centre; mixed digital/analogue setups; and listeners who want a serious preamp plus a high-quality DAC and headphone solution in one chassis.

Compatibility

Compatible with power amplifiers via balanced or unbalanced pre outs, and digital sources via USB, optical, or coaxial S/PDIF. Suitable for a wide range of headphones thanks to the discrete headphone amplifier output.

Pros & Cons

✅ Pros:

• Exceptionally low noise floor for highly resolving systems
• Integrated DAC with USB + optical/coax inputs for clean system simplification
• Discrete headphone amp with strong drive for varied headphone loads
• Balanced architecture and high linearity design focused on minimal distortion

⚠️ Cons:

• USB input supports up to 192 kHz PCM (higher sample rates require another digital source path)
• Full-size chassis requires proper rack space and ventilation

If you want a reference-grade preamp that prioritises silence, resolution, and system flexibility—while adding DAC and headphone capability in one unit.