Radial Engineering StageBug SB-5 Stereo Laptop DI

Product #96283 | SKU RA-SB-5 | Radial
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  • Connects a Mobile Device to a PA/Mixer
  • 3.5mm TRS Male Plug on 5' Attached Cable
  • Switchable -15 dB Pad
  • Custom-Wound Transformers
  • 2 x 1/4" TRS Outputs
  • Balanced XLR 3-Pin Output


The Radial Engineering StageBug SB-5 is an ultracompact passive direct box designed for DJs, musicians, and presenters who need a simple, reliable solution for connecting a smartphone, tablet, or laptop to a PA system, a mixing console, or an audio interface. Equipped with two custom-wound transformers, it reduces hum and buzz while allowing long cable runs.

The StageBug SB-5 features a 3.5mm TRS stereo mini plug on an attached 5' cable for direct hookup to your mobile device. Outputs include two 1/4" TRS jacks and a balanced XLR 3-pin male connector. A stereo-to-mono merge function allows easy routing of your stereo source into a mono mixer channel. Use the -15 dB pad to avoid distortion when dealing with high-output content such as mastered tracks.

Thanks to its passive design, the StageBug SB-5 requires no batteries or phantom power. It sports a ground-lift switch to inhibit problematic noise from ground loops. Integrated side-panel hooks enable convenient and tidy cable management.


Circuit Type Passive, Transformer-Based Design
Number of Channels 2
Inputs 1 x 1/8" / 3.5 mm TRS Male Stereo Input (on Attached Cable)
Outputs 2 x 1/4" TRS Female Balanced Outputs
1 x XLR 3-Pin Male Balanced Output
Cable Length 1.5 m
Frequency Response 20 Hz to 20 kHz (±1 dB)
Dynamic Range 100 dB
Maximum Input +20 dB
Total Harmonic Distortion 0.01% at 1 kHz
Deviation Phase: 2° at 100 Hz; 5° at 50 Hz
Input Impedance 40 Kilohms (Unbalanced)
Output Impedance 2.8 Kilohms (Balanced)
Pad -15 dB
Ground Lift Switchable
Power Requirements None
Operating Temperature 5 to 40°C
Construction 14-Gauge Steel Chassis and Outer Shell
Dimensions 11.4 x 4.7 x 3.4 cm
Weight 250 g

In The Box

  • Radial Engineering StageBug SB-5 Stereo Laptop DI


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  • Product: Radial Engineering StageBug SB-5 Stereo Laptop DI
  • Manufacturer: Radial
  • Model: RA-SB-5
  • SKU: RA-SB-5
  • RM Product #: 96283
  • Warranty: 5 year manufacturer warranty

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