The Radial StageBug SB-5 is a compact stereo adapter box designed for laptops, tablets and other consumer audio products to amplify the signal through a PA system.
Passive in design, the SB-5 has a 1.5 m input cable in angled stereo mini-jack format. The cable is attached directly to the DI chassis and supported on winding hooks for easy storage. Inside, the signal passes through a pair of transformers that lower the impedance and balance the signal - isolating the computer from the PA system to help eliminate hum and buzz caused by audio loops. mass. This is also secured by a Ground-Lift switch which further reduces contamination of the earth.
A choice of output connectors is available with a pair of TRS jacks for operating a stereo signal and an XLR output which converts left/right to mono. This helps make installation easier in situations where full stereo reproduction is not necessary. The SB-5 also offers a -15 dB pad that can be engaged to reduce sensitivity to high-output sources and prevent distortion.