The Radial StageBug SB-4 is a compact active DI box that has been optimized for use with piezo transducers. This allows you to connect violin, dobro, mandolin, cello, double bass and other instruments that are best amplified using a piezo without compromising tone or frequency response.
The design starts with a ¼" input for the instrument mic. Unlike typical DI boxes which have an input impedance of 1 meg-ohm, the SB-4 features a very high impedance of 10 meg-ohm. ohm which attenuates the annoying peaks that give piezos a bad reputation. The higher impedance also broadens the frequency response for a more natural and pleasant sound. The active circuit performs the high to low impedance conversion and balances the signal to. enable long distances up to 100 meters without loss, providing spectacular linearity and low distortion throughout the audio range.
To help eliminate feedback on stage, the SB-4 is equipped with a high-pass filter and a 180° polarity reversal. The high pass filter eliminates excessive bottom end which in turn reduces resonance which can cause the top of the instrument to vibrate. 180 Polarity Reversal 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. Reversing the polarity eliminates the acoustic peak without resorting to harsh equalization which only serves to compromise the natural tone of the instrument. Connections include an AUX output for a stage amplifier plus a standard XLR output to power the PA. Power is derived from the console's 48V phantom, eliminating the need for batteries or external power. Simply plug in, turn on the phantom power and play!
These features combined with its compact size make the StageBug SB-4 the ideal companion for orchestral performers, blue grass musicians, and pop string quartets who need to take it live.