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CCI Solutions > Sound > Direct Boxes > Radial StageBug SB-4

Radial StageBug SB-4 

Active Phantom Power DI Box for Piezoelectric Transducers

  • Description
  • Specifications
  • Reviews/Ratings

Radial's StageBug™ SB-4 is an active 48 volt phantom power DI box optimized for use with piezoelectric transducers, such as those found in acoustic guitar pickups or stringed instrument pickups. The SB-4 provides excellent amplification of a piezo transducer without compromising the tone or frequency response of the instrument. Most typical direct boxes with a 1/4" input have a 1 meg-Ohm input impedance, but the StageBug SB-4's input features an impedance of 5 meg-Ohms to smooth out troublesome peaks and high-frequency content that can sometimes cause issues when using a piezo transducer. Because of this, the broader frequency response will provide a warmer and more natural sound for your instruments. This DI box's active circuit performs the high-to-low impedance conversion and balances the signal to enable long cable runs upwards of 328 ft (100 m) without suffering from signal loss to deliver outstanding linearity and low distortion throughout the audio range.

The StageBug SB-4 also comes equipped with a high-pass filter and a 180° polarity reverse to help eliminate feedback while on stage. The high-pass filter eliminates excessive low-frequency content which also helps to prevent your instrument from resonating with those low frequencies for a cleaner sound. 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 troublesome peaks. Reversing the polarity eliminates these peaks without resorting to severe equalization which can negatively effect the natural tone of your instrument.

The SB-4 comes with a 1/4" input along with a 1/4" aux output to connect to a stage amplifier or monitor, as well as an XLR output that connects to the PA system. Phantom power is derived from the console's 48 volt phantom, eliminating the need for batteries or an external power supply while using the SB-4 — simply connect to console, turn on the phantom power, and you're set to go!

Radial StageBug SB-4 Features:

  • Active DI optimized for piezo transducers
  • Smooths out peaks, eliminates squawk
  • High-pass filter eliminates resonance
  • Ultra-compact to fit in your guitar case
Specifications for the Radial StageBug SB-4
  • Audio Circuit Type: Piezo optimized active buffer
  • Frequency Response: 20 Hz - 20 kHz
  • Total Harmonic Distortion: < 0.006%
  • Dynamic Range: 100 dB
  • Input Impedance: 5 meg-Ohms
  • Maximum input: +4 dBu
  • Gain: +2 dB
  • Output Impedance: 330R Ohms
  • Equivalent Input Noise: -101 dBu
  • Noise Floor: -97 dBu
  • Intermodulation Distortion: < 0.01%
  • Phase Deviation: 10° at 50 Hz
  • Switches: High-pass filter, Phase, Ground lift
  • High-Pass Filter Frequency: 150 Hz
  • Filer Slope: 6 dB/octave
  • Instrument Input: 1/4" buffered with piezo optimized load
  • Auxiliary Output: 1/4" buffered to drive guitar effects, amplifier, or tuner
  • Balanced Output: Pin 1 = GND; Pin 2 = (+); Pin 3 = (-)
  • Polarity Reverse: 180°
  • Ground Lift: Soft lift with 100 Ohms to ground
  • Construction: 16 gauge steel chassis and outer shell
  • Finish: Durable powder coat
  • Size: 4.5" L x 1.85" W x 1.35" D (114 x 47 x 34 mm)
  • Weight: 0.55 lbs (250 g)
  • Power Requirement: 48 V phantom power, 5 mA
  • Conditions: For use in dry locations only between 5° C and 40° C
  • Warranty: Radial 3-year, transferable
Overall Rating:  N/A Number of Reviews: 0
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