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Radial Engineering StageBug SB-5 Laptop DI – Direct Injection Box SB5

StageBug SB-5 Laptop DI – Direct Injection Box

SKU: SB5 Categories: , , Tags: , , , , , , , , ,


The Radial StageBug SB-5 is a compact & portable stereo direct box designed to accommodate laptop computers, tablets, and other consumer audio products when amplifying the signal through a PA system.

The StageBug SB-5 provides an easy to use professional interface for connecting any mobile playback device to a mixer or PA system, with a built-in cable and 3.5mm stereo plug to connect directly to your laptop, smartphone, or tablet. Inside, a pair of custom wound transformers isolate the signals to prevent hum and buzz, and balance the audio to feed long cable runs without noise. Left and right 1/4″ TRS outputs are provided for stereo operation, or a mono XLR output can be used to save channels on the PA system. The SB-5 works without any power required, and features additional ground lift and pad switches to eliminate ground loop noise and prevent distortion from high output audio sources.



• Stereo direct box for laptops, smartphones, and tablets
• Cable with 3.5mm stereo plug to connect to mobile devices
• Transformer isolation eliminates hum and buzz
• Plug & play easy to use, no power required
• Compact design fits in your laptop bag



• Audio circuit type: Passive, transformer based
• Number of channels: Two channels
• Frequency response: 20Hz ~ 20KHz (± 1dB)
• Dynamic range: 100dB
• Total harmonic distortion: 0.01% @ 1kHz
• Phase Deviation: 2° @ 100Hz; 5° @ 50Hz
• Input Impedance: 40k Ohms, unbalanced
• Output Impedance: 2.8k Ohms, balanced
• Maximum Input: +20dB

• Input pad, Mono Sum, Ground lift
• Input Connectors: 3.5mm
• Output Connectors: 1/4″ TRS, XLR

• Construction: 14 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: 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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Weight .295 kg
Dimensions 21 × 12.7 × 5.1 cm