Radial SB-4 Piezo Compact Active DI - Your Ultimate Acoustic Instrument Companion
Amplify your piezo instruments with ease!
• Retain natural tone: The SB-4's 5 meg-ohm impedance smooths peaks and broadens frequency response for a natural sound.
• Control feedback: Equipped with a high-pass filter and 180° polarity reverse switch.
• Compact & convenient: Fits in your instrument case and powered by 48V phantom power.
The Radial SB-4 Piezo Compact Active DI is a game-changer for musicians using piezo transducers. Connect upright basses, violins, cellos, and other acoustic instruments to the PA without sacrificing tone. Its high impedance reduces unwanted peaks, while the active circuit ensures long cable runs without signal loss. Output options include an aux out for stage amps and a standard XLR output for the PA. Say goodbye to feedback with the built-in high-pass filter and polarity reverse switch.
Features:
- Active DI optimized for piezo transducers
- Smooths out peaks & eliminates squawk
- Powered by 48V phantom, no batteries required
- Compact design fits in your instrument case
- HPF
Reduces excessive bass for more clarity. Eliminates run-away resonant feedback from acoustics. - Input
1/4' input is used to connect from the instrument to the StageBug SB-4. - AUX Out
1/4' TRS thru connector is used to send the instrument signal to an on-stage amp or to an electronic tuner. - Output
XLR balanced 600 mic level output, use to feed mixer or mic preamp. - Polarity
180° polarity reverse helps tame hot spots on stage that can cause feedback. - Warranty: Radial 3-year, transferable
Specifications:
- Audio circuit type: Piezo optimized active buffer
- Frequency response: 20Hz to 20kHz
- Dynamic range: 100dB
- Gain: +2dB
- Total harmonic distortion:<0.006%
- Intermodulation Distortion: <0.01%
- Phase Deviation: 10° @ 50Hz
- Input Impedance: 5Meg Ohms
- Output Impedance: 330 Ohms
- Equivalent Input Noise: -101dBu
- Noise: -97dBu
- Maximum Input: +4dBu
- Features
- 180° polarity reverse, Ground lift, HPF
- Input Connectors: 1/4'
- Output Connectors:XLR
- General
- Construction: 16 gauge steel chassis & outer shell
- Size (L x W x D): 4.5' x 1,85' x 1.35' (114mm x 47mm x 34mm)
- Weight: 0.55 lbs (250 grams)
- Shipping size (L x W x D):8' x 5' x 3' (203mm x 127mm x 76mm)
- Shipping weight: 0.8 lbs (365 grams)
- Power:48V phantom power, 5mA
- Conditions: For use in dry locations only between 5°C and 40°C
The Radial SB-4 Piezo Compact Active DI is designed for musicians who play upright basses, violins, cellos, and other acoustic instruments equipped with piezo transducers. It allows them to connect their instruments to the PA system without sacrificing tone. The unit is compact, with dimensions of 4.5' x 1.85' x 1.35' (114mm x 47mm x 34mm) and weighs 0.55 lbs (250 grams), making it easy to fit in an instrument case. It runs on 48V phantom power and has features like a high-pass filter and 180° polarity reverse switch to control feedback.
