Hosa DIB-490 Active Stereo Direct Box for Keyboards, Synths, and DAWs

The Hosa Pro-Conex Sidekick DIB-490 is an active stereo direct box designed to connect stereo instruments and high-impedance sources to a mixing console, audio interface, or DAW with clarity and control. Powered by standard 48V phantom power, this dual-channel DI box delivers a high-headroom signal path that helps preserve transient detail and frequency response, making it a strong choice for keyboards, synthesizers, drum machines, backing tracks, and other stereo sources.

Built for stage and studio use, the DIB-490 also works as a compact solution for two separate mono instruments in one enclosure. Its active buffering helps maintain the natural brightness and definition of high-impedance signals, while essential signal-management tools such as a selectable pad, ground lift, and polarity reverse switches help solve common live sound and recording issues quickly. For musicians, engineers, and performers who need reliable stereo DI performance without unnecessary complexity, this Hosa active direct box offers practical flexibility in a rugged format.

Key Features

• Stereo Dual-Channel Operation: Handles a single stereo source such as a keyboard or synthesizer, or two separate mono instruments through one compact unit.
• Active Phantom-Powered Circuitry: Uses 48V phantom power to provide active performance with consistent headroom and no battery requirement.
• High-Impedance Friendly Design: Active buffering helps preserve the natural tone, brightness, and clarity of high-impedance instruments.
• Three-Position Input Pad: Selectable 0 dB, -15 dB, and -30 dB attenuation supports a wide range of signal levels from lower-output instruments to hotter line-level sources.
• Dual Thru Outputs: Two 1/4-inch thru connections allow the original signal to continue to stage amplifiers while simultaneously sending a balanced signal to the PA or recording system.
• Ground Lift and Polarity Reverse: Dedicated switches help reduce hum caused by ground loops and address phase-related issues in live and studio environments.
• Versatile Application Range: Well suited for stereo keyboards, drum machines, samplers, DJ rigs, laptop playback systems, and dual-instrument setups.

Technical Specifications

• Brand: Hosa
• Sub-Brand: Hosa Pro-Conex
• Series: Sidekick
• Model: DIB-490
• Product Type: Active Stereo Direct Box
• Circuit Type: Active (Transformerless Balancing)
• Channels: 2 (Stereo or Dual Mono)
• Inputs: 2 x 1/4-inch TS (Unbalanced)
• Outputs: 2 x XLR3M (Balanced)
• Thru/Link: 2 x 1/4-inch TS
• Power Source: 48V Phantom Power
• Input Pad: 0 dB, -15 dB, -30 dB
• Switches: Ground Lift, Polarity Reverse, Pad