The Radial StageBug SB-4 is a compact active direct box that has been optimized for use with piezo transducers and is small enough to fit inside an instrument case.
- 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
The perfect companion for piezo instruments
The StageBug SB-4 allows you to retain the natural tone of your piezo-equipped instrument when amplified through a PA system. Unlike typical direct boxes, the SB-4 features a very high 5 meg ohm impedance that smooths out troublesome peaks that give piezo transducers a bad name. This higher impedance also broadens the frequency response for a more natural and pleasing sound. The active circuit balances the audio signal to enable long runs up to 100 meters without loss, while delivering spectacular linearity and low distortion throughout the audio range. Output connections include an aux out for a stage amplifier plus a standard XLR output to feed the PA.
Control feedback on stage
To help eliminate feedback on a live stage, the SB-4 is equipped with a high-pass filter and 180° polarity reverse switch. The high pass filter eliminates excessive bottom end which in turn reduces resonance that can cause the instrument to vibrate. The 180° polarity reverse helps reduce acoustic hot spots on stage by changing the phase relationship between the PA system and room acoustics which can combine at certain frequencies to create peaks.
The Radial StageBug SB-4 is an active direct box that has been optimized for use with piezo electric transducers such as used on classical guitar, violin, mandolin and upright bass. It features a high 5-meg-ohm input impedance that at once broadens the frequency response while reducing the peaks and squaw that are commonly encountered with piezo devices. This is augmented with a high pass filter that gently rolls off excessive bass. The unique AUX output is buffered to enable high impedance sources to feed pedals and amplifiers without interacting with the input impedance. Extra attention has been paid to the circuit design to ensure exceptional performance resulting in less than 0.01% distortion throughout the critical listening range and a noise floor that approaches -100dB. These features combine to make the Radial StageBug SB-4 a excellent solution for orchestral and acoustic instruments of all types.
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