Details

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Radial Engineering StageBug SB-1 Compact Active DI Box for Acoustic Guitar, Bass & Live Sound Systems

Product Introduction

The Radial Engineering StageBug SB-1 is a professional compact active DI box designed for musicians, performers, worship venues, recording studios, and live sound engineers who demand clean, noise-free audio transmission. Built with Radial's renowned audio engineering expertise, the SB-1 converts high-impedance instrument signals into balanced low-impedance signals, ensuring superior sound quality and reliable performance over long cable runs.

Its ultra-compact design easily fits inside a guitar case, making it the ideal travel companion for acoustic guitarists, bass players, and mobile performers. Powered directly by 48V phantom power from a mixer or audio console, the StageBug SB-1 eliminates the need for batteries, providing a hassle-free plug-and-play solution for professional audio applications.

Product Description

Whether you're performing live on stage, recording in the studio, or connecting instruments to a professional PA system, the Radial StageBug SB-1 delivers exceptional signal integrity and low-noise performance.

The active buffer circuit preserves the natural tone and dynamics of acoustic guitars and passive basses while reducing signal degradation caused by long cable runs. Features such as a built-in input pad, ground lift switch, and 180° polarity reverse allow quick troubleshooting of hum, buzz, phase issues, and signal overload situations.

Constructed with a rugged 16-gauge steel chassis, the SB-1 is built to withstand demanding touring and professional environments while maintaining Radial's industry-leading audio quality standards.

Key Features & Benefits

✓ Professional Active DI Circuit

Converts high-impedance instrument signals into balanced low-impedance outputs for clean, noise-free audio transmission.

✓ Perfect for Acoustic Guitars & Passive Basses

Optimized input circuitry preserves the natural tone, warmth, and dynamics of your instrument.

✓ Ultra-Compact Portable Design

Small enough to fit inside most guitar cases, gig bags, and mobile performance setups.

✓ Phantom Powered Operation

Powered by standard 48V phantom power from mixers and audio consoles—no batteries or external power supplies required.

✓ Ground Lift Switch

Helps eliminate hum and ground loop noise commonly found in live sound installations.

✓ 180° Polarity Reverse

Quickly correct phase issues when combining multiple microphones and instrument sources.

✓ Long Cable Run Capability

Balanced XLR output maintains audio quality over extended distances to mixers and PA systems.

✓ Rugged Steel Construction

Heavy-duty 16-gauge steel housing ensures reliability for touring, rental, and professional installations.

Applications & Solutions

Live Stage Performances

Connect acoustic guitars, bass guitars, keyboards, and other instruments directly to front-of-house mixers with clean, balanced audio.

Houses of Worship

Provides reliable instrument connectivity for churches, worship halls, and religious venues while minimizing noise and interference.

Recording Studios

Capture instrument signals accurately with low distortion and excellent dynamic range for professional recording sessions.

Event & Rental Companies

Compact, durable, and easy to deploy for conferences, concerts, corporate events, and mobile sound systems.

Musicians on the Move

Fits easily into a guitar case, allowing performers to carry a professional DI solution wherever they go.

Technical Specifications

Audio Performance

• Audio Circuit Type: Active Buffer with Phase Splitter
• Channels: 1
• Frequency Response: 20Hz – 20kHz
• Dynamic Range: >100dB
• Gain: +1.3dBu / +4.4dB
• Maximum Input Level: +2dBu / +8dBu
• Clip Level: +3.3dBu / +12.3dBu
• Total Harmonic Distortion (THD): <0.006%
• Intermodulation Distortion: <0.01%
• Equivalent Input Noise: -101dBu
• Noise Floor: -97dBu

Connectivity

• Input: 1/4" Instrument Input
• Thru Output: 1/4" Link Output
• Balanced Output: XLR

Control Features

• Input Pad
• Ground Lift
• 180° Polarity Reverse

Construction

• Chassis: 16-Gauge Steel
• Dimensions: 114 x 47 x 34 mm
• Weight: 250 g

Power Requirements

• 48V Phantom Power
• Current Consumption: 5mA

Operating Environment

• Recommended Temperature: 5°C to 40°C
• Indoor Dry Locations Only

Why Choose the Radial StageBug SB-1?

• Trusted Radial Engineering audio quality
• Compact and travel-friendly design
• No batteries required
• Excellent for acoustic guitars and passive basses
• Professional-grade balanced XLR output
• Reduces hum, buzz, and signal loss
• Reliable performance for live sound and studio applications
• Built for touring musicians and audio professionals