Radial StageBug™ SB-5 Laptop DI Box

Was £115.00

Special Price £103.50

With free shipping

Stereo direct box for laptop computer

Temporarily out of stock

Due back in stock in 2-3 months

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Manufacturer: Radial

Category: Recording & Playback



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

The passive design begins with an integrated input cable that connects from the headphone out via a flexible 1.5m (5') cable that is terminated with a standard 3.5mm (1/8") stereo connector. The cable is secured via a clamping strain relief and is wrapped using the sidewinder cleat for easy storage. This of course eliminates having to locate a cable making it easier to deploy in fast paced work environments. Inside, the signal is sent to a pair of custom wound transformers where the impedance is lowered and the signal is balanced for long cable runs - upwards to 100 meters (300'). Transformers further benefit by isolating the computer from the PA system to help eliminate hum and buzz caused by ground loops. This is augmented with a ground lift switch to further reduce ground contamination.

A choice of output connectors is available including a stereo set of ¼" TRS jacks for full stereo operation or an XLR out that automatically sums the left-right program material to mono. This can save valuable channels on the PA system and makes setup easier in situations where full stereo reproduction is not required. A -15dB input pad may be engaged to reduce sensitivity and enable extra high output sources to be connected without distortion.

These features combine to make the SB-5 the perfect tool-kit DI for the AV technician, media manager or traveling musician equipped with a computer.

Additional Info

Additional Info

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

Transformer: Custom design
Input pad:  -10dB  
Auto Merge:  Sums left & right sources to mono at XLR
Ground lift:  Disconnects pin-1 at 1/4" TRS outputs 
XLR configuration:  AES standard (pin-2 hot) 
Input connector: 3.5mm (1/8") integrated 1.5m (5') cable
Output connectors: 1/4" TRS stereo / XLR-M mono merge

Construction:  14 gauge steel chassis & outer shell
Finish: Baked enamel
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: W x H x D: 102 x 76 x 165mm (4" x 3" x 6.5")
Shipping Weight: 0.8 lbs (365 grams)
Power:  Passive, no power required 
Warranty:  Radial 3-year, transferable
Specifications are subject to change without notice.
Manufacturer's Part Number R800 0150
Manufacturer Radial
also known as StageBug SB-5 Passive Laptop direct Box, Radial Engineering SB-5 Compact Stereo DI for Computers, Radial SB5 DI-Box
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