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Radial Engineering SB-5W Wall DI Direct In

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The SB5w from Radial Engineering is a stereo direct box designed to fit straight into a regular single gang electrical wall plate. It provides connectivity from unbalanced and line level audio sources, to a balanced audio system via a permanently mounted box. This is a great tool for recording studios or live venues.


  • Easy to use control panel
  • Passive design, no power needed
  • Contractor friendly screw terminals
  • Transformer isolated eliminates noise
  • Audio circuit type:  Passive transformer isolated
  • Frequency response:  20Hz - 20kHz
  • Dynamic range:  >120dB
  • Noise floor:  -101dBu
  • Equivalent input noise: -98dBu
  • Maximum input: +20dBu
  • Phase deviation:  0° @ 100Hz; -3° @ 50Hz 
  • Total harmonic distortion: 0.002%
  • Input impedance: Approx 10K with 100K Load 
  • Output impedance: 5k Ohms 
  • Gain: -3dB
  • Clip level - output: +17dBu
  • Stereo Separation: >77dB
  • Construction: 14 gauge steel chassis & outer shell
  • Finish: Durable powder coat
  • Size: (L x W x H) 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
  • Installation: Only use in low voltage systems and enclosures

WARNING: Cancer and Reproductive Harm -

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