The Pro-Ject Phono Box MM is a compact, entry-level moving magnet (MM) phono preamplifier designed to convert phono signals to line-level outputs with audiophile accuracy. Housed in a small, shielded metal chassis with a discrete industrial aesthetic, the Phono Box MM can be easily positioned adjacent to a turntable or integrated seamlessly into an existing Hi-Fi audio rack without taking up valuable space.

Engineered around dual-mono internal circuitry and special low-noise ICs, the Phono Box MM delivers optimal channel separation while keeping total harmonic distortion under 0.04%. An external 18V DC power supply isolates sensitive internal amplification stages from AC mains noise, while gold-plated RCA input and output connectors ensure pristine signal transfer for budding vinyl enthusiasts.

KEY FEATURES & SYSTEM HIGHLIGHTS

• MM Cartridge Optimization: Specifically calibrated to provide 40 dB of gain and precise RIAA equalization for moving magnet (MM) cartridges.
• Shielded Metal Chassis: Compact, heavy-duty metal enclosure protects sensitive internal electronics from electromagnetic and radio frequency interference.
• Dual-Mono Circuit Topology: Independent left and right channel architecture utilizes specialized low-noise ICs for superior channel separation and low noise floor.
• Outboard Power Supply: External 18V DC power adapter eliminates mains transformer hum and electrical interference from the audio signal path.
• Gold-Plated RCA Connectivity: Features corrosion-resistant, gold-plated RCA input and output jacks for reliable signal transmission.
• Ultra-Compact Footprint: Minimalist design allows placement directly next to a turntable for short, low-capacitance cable runs.

SPECIFICATIONS