The Radial Engineering StageBug SB-1 is a compact active direct box that measures less than 2″  x 3.85″ x 1.3″ and is powered using standard 48-volt phantom power. It has a ¼” hi-Z instrument input, a low-Z balanced output to feed the PA system, plus a tuner out that also works as a through connection to feed the artist’s onstage amp. All connectors use glass-filled nylon construction and nickel-silver contacts, and a full-ground plane reduces noise. Response is from 20Hz to 20kHz, a -15dB pad handles high-output/active instruments, and a 180°polarity reverse tames hotspots and eliminates resonant feedback. Check it out at radialeng.com/r2011/stagebug.php