Pro-Ject Phono Box MM Phono Preamp (Open Box)
Pro-Ject Phono Box MM Phono Preamp (Open Box)
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Pro-Ject Phono Box MM — Premium Moving Magnet Phono Preamp
This is an open box item. Like new, not a lot of use. Includes original packaging and cords.
The Phono Box MM delivers exceptional phono preamplification specifically optimized for moving magnet cartridges. Designed with dual-mono circuitry and premium components, this compact preamp brings out the best in your vinyl collection with pristine RIAA equalization, ultra-low noise, and exceptional channel separation. Perfect for audiophiles seeking reference-quality sound without compromise.
🎵 Optimized for Moving Magnet Cartridges
Specifically engineered for moving magnet phono cartridges with precise input impedance of 47kΩ/120pF. The circuit topology is optimized to extract maximum detail and dynamics from MM cartridges while maintaining the natural warmth and musicality that makes vinyl special.
Delivers the perfect electrical load for MM cartridges to perform at their absolute best.
🎚️ Dual-Mono Circuitry
Features completely separate left and right channel circuits for optimal channel separation and stereo imaging. Each channel is independently processed from input to output, eliminating crosstalk and preserving the three-dimensional soundstage encoded in your vinyl.
Experience pinpoint instrument placement and a wide, deep soundstage that brings your music to life.
⚡ External Power Supply
The separate external power supply keeps noise-generating components away from sensitive audio circuits. This isolation dramatically reduces electromagnetic interference and AC line noise, ensuring your music emerges from a perfectly black background.
Hear subtle details and micro-dynamics that other preamps simply cannot reveal.
🛡️ Metal Shielding
Robust metal case construction provides comprehensive shielding from electromagnetic interference and mechanical vibration. The rigid chassis protects delicate electronics from external noise sources and resonance, maintaining signal purity from input to output.
Professional-grade construction ensures consistent, interference-free performance in any environment.
🔌 Gold-Plated Connections
Premium gold-plated RCA input and output jacks ensure solid, corrosion-free connections for years of reliable service. Gold plating provides superior conductivity and oxidation resistance compared to standard connectors.
Long-term reliability and consistent signal transfer you can count on.
🔬 Precision RIAA Equalization
Exceptionally accurate RIAA response accuracy of ±0.5dB (20-20,000 Hz) ensures faithful reproduction of the original recording. This precision equalization curve perfectly reverses the RIAA encoding applied during vinyl mastering.
Hear your records exactly as the artist and mastering engineer intended.
📐 Compact Design
The small footprint (4.25" × 1.19" × 3.69") allows flexible placement near your turntable for shorter signal paths and reduced interference. Compact size doesn't compromise performance—every component is carefully selected and optimized.
Fits easily into any system while delivering full-size performance.
💪 Exceptional Performance Specs
With 40dB of gain, 88dB signal-to-noise ratio, and just 0.04% THD, the Phono Box MM delivers the clean amplification your turntable deserves. These specifications ensure your vinyl playback is limited only by the quality of your records and cartridge.
Reference-quality measurements translate to stunning musical performance.
📐 Technical Specifications
Moving Magnet (MM)
47 kΩ / 120pF
40dB
88dB
0.04%
±0.5dB (20-20,000 Hz)
Fixed
No
1 Pair (Gold-Plated)
1 Pair (Gold-Plated)
Not Available
None
4.25" W × 1.19" H × 3.69" D
External (included)
Metal shielded chassis
Dual-mono topology
🎵 Perfect for: Audiophile turntable systems • Moving magnet cartridges • High-fidelity vinyl playback • Compact audio setups • Reference-quality sound • Upgrade from built-in preamps • Dedicated listening rooms
"Exceptional performance in a compact, affordable package."
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