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Radial Engineering


Radial SB-2 Compact Passive DI for Bass & Keyboard

The Radial StageBug SB-2 Passive is a high-performance direct box made for players who are on the move! Made to fit inside of a guitar case, the SB-2 is ultra compact yet is feature-packed to ensure great performance on any stage.


      • Passive DI for bass, acoustic and keyboard
      • Ultra compact to fit in your guitar case
      • Plug & play easy to use feature set
      • Transformer isolation eliminates noise

      Audio circuit type:  Passive, transformer based
      Number of channels: Single channel (mono)
      Frequency response:  20Hz ~ 20KHz (± 0.5dB)
      Dynamic range:  115dB 
      Maximum input:  +20dB 
      Total harmonic distortion:  0.005% @ 1kHz
      Phase deviation:  3° @ 100Hz; 8° @ 50Hz 
      Input impedance:  140k Ohms, unbalanced 
      Output impedance:  1k Ohms, balanced 
      Transformer: Eclipse ET-DB3, 12:1 ratio
      Shield: Copper foil
      Input pad:  -10dB  
      Auto Merge:  Sums left & right sources to mono
      Ground lift:  Disconnects pin-1 at XLR output 
      XLR configuration:  AES standard (pin-2 hot) 
      Connectors: 1/4" in & thru, XLR-M out
      Construction:  14 gauge steel chassis & outer shell
      Finish: Durable powder coat
      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:  Passive, no power required 
      Conditions: For use in dry locations only between 5°C and 40°C
      Warranty:  Radial 3-year, transferable
      Specifications are subject to change without notice.
Need more info on the Radial SB-2? Click HERE for the Radial Engineering website >>>