The Radial StageBug SB-1 Active Acoustic Direct Box is a compact, high-performance solution designed specifically for acoustic instruments and piezo pickups that demand proper impedance matching and pristine signal clarity.
Ideal for acoustic guitars, violins, mandolins, upright basses, and other piezo-equipped instruments, the SB-1 delivers a natural, full-range sound without the harshness or low-end loss often caused by standard DIs. Its ultra-small footprint makes it perfect for pedalboards, stage rigs, and tight performance spaces where reliability and tone are critical. Powered by phantom power, the SB-1 features a high-impedance active input that preserves the true character of your instrument while providing excellent headroom and low noise. A switchable high-pass filter helps control boominess and stage rumble, while a polarity reverse switch ensures proper phase alignment when blending with microphones. Built in Radial’s rugged StageBug enclosure, the SB-1 is engineered to withstand the realities of live performance and studio use alike.
Radial StageBug SB-1 Active Acoustic Direct Box Features
- Active direct box optimized for acoustic instruments and piezo pickups
- High-impedance input preserves natural tone and full frequency response
- Phantom-powered operation — no batteries required
- Switchable high-pass filter reduces low-frequency rumble and feedback
- Polarity reverse switch for phase alignment with microphones
- Balanced XLR output for long cable runs without noise
- Compact StageBug enclosure fits easily on pedalboards or stages
- Ideal for acoustic guitar, strings, upright bass, and orchestral instruments
- Rugged Radial construction designed for professional use
Radial StageBug SB-1 Active Acoustic Direct Box Applications
- Acoustic guitar live - The Radial StageBug SB-1 is plug & play easy to use. Connect and it automatically converts your Hi-z instrument signal to lo-Z and balances it for long runs.
- Recording bass direct - Record your bass direct using the Radial StageBug SB-1. This improves the tone and reduces noise by properly matching the impedance of the instrument.
- Adding an amp or tuner - Use the Radial StageBug SB1 thru output to feed your on-stage amplifier. For fun, add pedals after the Radial StageBug SB-1 to color your tone on-stage while leaving the PA signal clean.
Radial StageBug SB-1 Active Acoustic Direct Box Specifications
- Technical Specs:
- Audio Circuit Type: Active Buffer with Phase Splitter
- Frequency Response: 20Hz to 20KHz
- Total Harmonic Distortion: <0.006%
- Dynamic Range: >100db
- Input Impedance: 800K/23K
- Maximum Input: +2dbu/+8dbu
- Gain: +1.3dbu/+4.4db
- Clip Level - Output: +3.3dbu/+12.3dbu
- Output Impedance: 330 Ohms
- Equivalent Input Noise: -101dbu
- Noise Floor: -97dbu
- Intermodulation Distortion: <0.01%
- Phase Deviation: 25/12 degrees Maximum
- Features:
- Switches: Pad, Phase
- Merge Function: Automatic
- Input Pad: -12db
- Polarity: Yes
- XLR Configuration: + = Pin 2, - = Pin 3, Ground = Pin 1
- General:
- Construction: 16 gauge steel chassis & outer shell
- Finish: Baked enamel
- Size: (L x W x D) 4.5" x 1,85" x 1.35" (114mm x 47mm x 34mm)
- Weight: 0.55 lbs (249.48 grams)
- Shipping Size: (L x W x D) 8.25" x 5" x 1.75" (210mm x 127mm x 44mm)
- Shipping Weight: 0.8 lbs (362.87 grams)
- Power: 48V phantom power
Radial StageBug SB-1 Active Acoustic Direct Box Includes
- Radial StageBug SB-1 Active Acoustic Direct Box
- User Guide
- Manufacturer Warranty
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