Up for sale is a rare and highly sought-after piece of analog soul: the Mercury Recording Equipment Reverb (500 Series). If you are looking for the authentic, lush, and three-dimensional sound of a real spring reverb but don't have the space for a massive vintage tank, this is the premier solution.

Unlike digital emulations or common pedal-style springs, the Mercury Reverb is built with high-voltage, high-headroom studio-grade circuitry. It delivers that legendary "splash" and "boing" but with the fidelity and low noise floor required for professional mixing and tracking.

Key Features:

• Real Spring Tank: Features a custom-tuned internal spring assembly for genuine mechanical reverberation.
• Transformer Balanced I/O: High-quality transformers add weight and character to the signal path, providing that classic "Mercury" sound.
• Mix Control: Fully variable dry/wet blend for dialing in the perfect amount of space.
• Tone Control: A musical EQ specifically tailored to shape the reverb return—from dark and moody to bright and "shimmery."
• Drive Control: Allows you to push the input stage for subtle harmonic saturation or more aggressive, lo-fi spring textures.
• Linkable: If you have two units, they can be used for a true stereo spring setup on your mix bus or synth groups.

Condition: This unit is in Excellent / Mint condition. It has been used exclusively in a smoke-free, professional studio environment and has been kept in a high-current 500-series rack. It functions perfectly and sounds incredible on vocals, guitars, and drums.

Note on Format: The Mercury Reverb occupies 1 slots in a standard 500-series rack but can operate as a stereo module, via a breakout cable (your rack needs to support trs to do this)

Technical Specs

• Format: 1-Slot 500 Series
• Input Impedance: 10k Ohms (Transformer Balanced)
• Output Impedance: 600 Ohms (Transformer Balanced)
• Circuitry: Discrete, high-headroom analog path