Details

---

Radial Engineering J33 Phono Preamp & DI Box for Turntable Vinyl Record Player

Product Introduction

The Radial Engineering J33 Phono Preamp & DI Box is a professional-grade solution designed to connect turntables and vinyl record players directly to mixers, PA systems, recording interfaces, and audio processors. Combining a high-quality RIAA phono preamp with an active direct box, the J33 bridges the gap between consumer audio equipment and professional sound systems.

Whether you are a DJ, recording engineer, audiophile, church technician, event organizer, or venue owner, the J33 ensures clean, balanced audio transmission while preserving the warmth and character of your vinyl recordings. With stereo RCA, 1/4" TRS, 3.5mm, and balanced XLR outputs, the J33 provides unmatched flexibility for both live and studio applications.

Product Description

Many turntables output low-level phono signals that cannot be connected directly to professional audio equipment. The Radial J33 solves this problem by incorporating a premium RIAA equalized phono preamp and an active DI box into a single compact unit.

The J33 converts the delicate phono signal from a turntable into both consumer line-level and professional balanced microphone-level outputs. This allows seamless integration with mixing consoles, audio interfaces, powered speakers, amplifiers, broadcast systems, and PA systems.

Designed for superior sound quality, the J33 features a built-in low-frequency rumble filter that removes unwanted turntable noise and vibrations. It can be powered using either standard 48V phantom power from a mixer or an external DC power supply, making it ideal for fixed installations, mobile DJs, houses of worship, recording studios, restaurants, hotels, and event venues.

From archiving vinyl collections to incorporating records into live performances, the J33 delivers exceptional clarity, low noise, and reliable operation in any professional audio environment.

Key Features & Benefits

High-Quality RIAA Phono Preamp

Precisely equalizes and amplifies turntable signals for accurate vinyl playback and recording.

Professional Active DI Box

Converts unbalanced phono signals into balanced outputs for long cable runs and reduced noise.

Multiple Audio Outputs

Features stereo RCA, 1/4" TRS, 3.5mm, and balanced XLR outputs for maximum connectivity.

Built-In Rumble Filter

Eliminates unwanted low-frequency turntable vibrations and mechanical noise.

Phantom or DC Powered

Operates using 48V phantom power from a mixer or an external DC power adapter.

Studio & Live Performance Ready

Perfect for DJs, recording engineers, broadcasters, churches, restaurants, and event venues.

Preserves Vinyl Sound Quality

Maintains the warmth, detail, and dynamic range of vinyl records.

Compact & Durable Design

Built to withstand professional touring, installation, and studio environments.

Applications

• Vinyl Record Player to Mixer Connection
• DJ Performance Systems
• Recording Studios
• Audio Archiving & Sampling
• Church Sound Systems
• Hotels & Restaurants Background Music
• Broadcast & Podcast Studios
• Event & PA Systems
• Audiophile Home Audio Systems
• Educational & Training Facilities

Why Choose the Radial J33?

Unlike standard phono preamps, the Radial J33 combines premium RIAA equalization with professional DI functionality, making it the ideal interface between turntables and modern audio systems. Its balanced XLR outputs ensure noise-free performance over long cable runs, while the consumer line-level outputs provide compatibility with home audio equipment.

For users looking to integrate vinyl playback into professional sound systems without sacrificing audio quality, the J33 offers one of the most reliable and versatile solutions available.

Technical Highlights

• Combination RIAA Phono Preamp and Active DI Box
• Balanced XLR Mic-Level Outputs
• Stereo RCA, 1/4" TRS and 3.5mm Outputs
• Low Frequency Rumble Filter
• Supports 48V Phantom Power
• External DC Power Supply Option
• Professional Studio Quality Audio Path
• Low Noise and High Headroom Design
• Compact Metal Chassis Construction