Radial StageBug SB-5W

Passive Wall-mountable Stereo Direct Box


StageBug SB-5W

The Radial StageBug SB5W is a passive stereo direct box made to fit in a standard North American single-gang electrical wall plate, providing AV integrators with an effective means of connecting an unbalanced audio source such as a laptop, smartphone, or tablet to a balanced audio system

  • 5mm and RCA inputs with level control
  • Passive design, no power needed
  • Contractor-friendly screw terminal outputs
  • Transformer isolation to eliminate noise

Professional sound for installation

The StageBug SB5W provides a permanently mounted interface to connect consumer audio devices with installed pro audio systems. Front panel 3.5mm TRS and RCA connectors are provided for any stereo source and a fully variable level control makes volume adjustments easy. Inside, the SB5W employs dual transformers that convert the inputs to a low-impedance balanced signal and eliminate hum and buzz caused by ground loops. Set & forget ground lift and mono switches are also included to further reduce noise and to sum the left and right channels together if needed. The outputs of the SB5W feature screw terminals with tie-down points for tie-wraps to make installation fast, efficient, and permanent.

The Radial SB5W is a passive stereo direct box designed to interface consumer audio devices such as laptops and tablets to a professional audio system. Designed to fit a standard Decora wall plate, the SB5W features an integrated design that is completely shielded to protect against external radiation. As a passive device, the SB5W presents excellent performance while providing isolation to eliminate the hum and buzz caused by ground loops.

Audio circuit type: Passive transformer isolated
Frequency response: 20Hz – 20kHz
Dynamic range: >120dB
Gain: -3dB
Clip Level: +17dBu
Total harmonic distortion: 0.002%
Phase Deviation: 0° @ 100Hz; -3° @ 50Hz
Input Impedance: Approx 10K with 100K Load
Output Impedance: 5k Ohms
Equivalent Input Noise: -98dBu
Noise: -101dBu
Maximum Input: +20dBu
Mono Sum, Ground lift
Input Connectors: RCA, 3.5mm TRS inputs
Output Connectors: Screw down terminals (- G +)
Construction: 14 gauge steel chassis & outer shell
Size (L x W x D): 2.42″ x 1,62″ x 4.24″ (61.4mm x 41.1mm x 107.7mm)
Weight: 0.5 lbs (227 grams)
Shipping size (L x W x D): 6.25″ x 4.25″ x 3″ (159mm x 108mm x 76mm)
Shipping weight: 0.65 lbs (295 grams)
Power: Passive, no power required
Conditions: For use in dry locations only between 5°C and 40°C
Warranty: Radial 3-year, transferable


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