Pro-Ject Phono Box Phono Preamp

Classic Entry-Level · MM/MC Dual Use · Metal Casing · Accurate RIAA Equalization

The Pro-Ject Phono Box is the brand's most classic and best-selling entry-level phono preamplifier. Designed for amplifiers without a built-in phono input, it supports both MM and MC cartridges, switchable with a single button on the rear panel. Its accurate RIAA equalization, low-noise design, and all-metal casing allow you to achieve clean, transparent, and musical vinyl sound at a reasonable price.

Its compact size and simple appearance make it suitable for placement near your turntable, serving as an excellent starting point for an entry-level high-fidelity system.

Product Basic Information

• Type: MM / MC Phono Preamplifier
• Supported Cartridges: MM (Moving Magnet) and MC (Moving Coil)
• Switching Method: MM/MC switch on the rear panel
• Output: RCA Line-level output
• Color: Black or silver front panel
• Origin: Designed and manufactured in Europe
• Accessories: External 18V DC power supply

Core Technology Highlights

• MM / MC Dual-Use Design: Single-button switching on the rear panel, compatible with most cartridges
• Accurate RIAA Equalization: 20Hz–20kHz with a maximum error of only 0.5dB
• Low-Noise IC Circuit: Effectively reduces background noise
• Ultra-Low Impedance Output Stage: Cleaner signal transmission, better dynamics
• All-Metal Casing: Effectively shields electromagnetic interference and vibration
• Gold-Plated RCA Terminals: Ensures stable connection
• External Power Supply: Reduces internal interference, standby power consumption <1W
• Extremely Compact Size: Can be placed directly next to the turntable, shortening signal cable length

Detailed Specifications

• Input Impedance: MM 47kΩ / 120pF ；MC 100Ω / 120pF
• Gain: MM 40dB ；MC 60dB
• Typical Output Voltage: MM 300mV (input 3mV @1kHz)；MC 300mV (input 0.3mV @1kHz)
• Maximum Output: 9.5V @1kHz
• Signal-to-Noise Ratio: MM 94dBA ；MC 75dBA
• Total Harmonic Distortion: MM 0.01% ；MC 0.05%
• RIAA Accuracy: 20Hz–20kHz / max. 0.5dB
• Power Supply: External 18V / 200mA DC
• Standby Power Consumption: <1W
• Dimensions: 103 × 36 × 104 mm (approx. 115mm including terminals)
• Weight: 570g

Sound Performance and Capabilities

The Phono Box delivers a clean, transparent, and balanced sound. The background is quiet, details are clear, mid-range is natural, and bass is powerful but not boomy, with delicate highs that are not harsh. Overall, it presents a neutral yet musical performance that faithfully reproduces the characteristics of the cartridge and record without excessive coloration.

Reviews indicate its outstanding performance among entry-level phono preamps, offering exceptional value for money, making it a representative of "Best Buy Classic."

Positive Online Reviews

• Bonedo: Transparent, balanced, and pleasant sound, excellent craftsmanship, extremely high value for money, no obvious drawbacks.
• Users and Media: Compact and practical, easy to set up, clean and natural sound, it is the first external phono preamp for many vinyl beginners.
• Multiple reviewers affirm it as the "classic entry-level choice," capable of significantly improving amplifier systems without a Phono input.