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Radial (SB-1 ACTIVE) Direct Box - Active

For Acoustic Guitar

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What's in the box:

  • Radial Engineering StageBug SB-1 Active Acoustic Direct Box
  • Limited 3-Year Transferable Warranty


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The Radial SB-1 is a high-performance active direct box made for players that are on the move. Made to fit inside a guitar case, the SB-1 is the smallest Radial DI box ever! But don't let the small size deter... this ultra-compact StageBug sounds absolutely terrific! The design begins with standard ¼” instrument input with a thru-put to feed your tuner or your on-stage amp. The ultra quiet active circuit at once converts the signal from high to low impedance to reduce susceptibility to noise, buffers it and then balances the signal for long runs to the PA system. And with 48 volt phantom powering, the SB-1 does not require batteries or external supply to make it work. You simply plug in and you are set to go!


  • Active direct box for acoustic guitar
  • Ultra compact to fit in your guitar case
  • Plug & play easy to use features
  • 48V phantom powered, no batteries needed!

Specifications for the Radial (SB-1 ACTIVE) Direct Box

{ "Audio circuit type:" : "Active Buffer with Phase Splitter", "Number of channels:" : "1", "Frequency response:" : "20Hz to 20KHz", "Dynamic range:" : ">100dB", "Gain:" : "+1.3dBu/+4.4dB", "Clip Level:" : "+3.3dBu/+12.3dBu", "Total harmonic distortion:" : "<0.006%", "Intermodulation Distortion:" : "<0.01%", "Phase Deviation:" : "25/12° Maximum", "Input Impedance:" : "800K/23K", "Output Impedance:" : "330 Ohms", "Equivalent Input Noise:" : "-101dBu", "Noise:" : "-97dBu", "Maximum Input:" : "+2dBu/+8dBu", "Features" : { "Input pad, 180° polarity reverse, Ground lift" : "", "Input Connectors:" : "1/4"", "Output Connectors:" : "XLR" }, "General" : { "Construction:" : "16 gauge steel chassis & outer shell", "Size (L x W x D):" : "4.5" x 1,85" x 1.35" (114mm x 47mm x 34mm)", "Weight:" : "0.55 lbs (250 grams)", "Shipping size (L x W x D):" : "8" x 5" x 3" (203mm x 127mm x 76mm)", "Shipping weight:" : "0.8 lbs (365 grams)", "Power:" : "48V phantom power, 5mA", "Conditions:" : "For use in dry locations only between 5°C and 40°C" } }

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