DI-108

Single-Channel Active DI Box
The DI-108 is a single-channel active DI box designed for live sound and studio recording. It converts high-impedance, unbalanced audio signals into low-impedance, balanced outputs, helping reduce noise interference over long cable runs. A built-in output isolation transformer, combined with a Ground Lift switch, helps minimize ground-loop hum for reliable connections between audio devices. Equipped with 1/4" and XLR inputs, the DI-108 accommodates electric guitars, basses, keyboards, DJ mixers, and other audio sources. Two -20 dB attenuation switches provide up to -40 dB of input attenuation to help prevent distortion from high-level signals. The 1/4" parallel LINK output allows simultaneous connections to a mixing console and an instrument amplifier or monitoring system, offering flexibility for different stage and studio setups. The DI-108 supports 18–48V phantom power or 9V battery operation, featuring a battery ON/OFF switch and automatic power switching when phantom power is available to conserve battery life. Battery operation also enables use with equipment that does not provide phantom power. A rugged metal housing makes it suitable for stage and studio environments.

Features

General Features
• Single-channel active DI design
• 1/4" and XLR inputs
• Dual -20 dB attenuation switches, up to -40 dB
• Output isolation transformer and Ground Lift function
• 1/4" parallel LINK output
• 18–48V phantom power or 9V battery operation with battery ON/OFF control and automatic power switching
• Rugged metal housing

Specifications

Circuit Type: Active analog circuitry
Phantom Power: 18 V DC~48 V DC
Power Requirement: 9 V 6LR91
Input Connectors: 1/4" Unbalanced Jack and XLR Female
Output Connectors: XLR Balanced Output + 1/4" Parallel Thru Output
Max Input Level: +10 dBu / +30 dBu/ +50 dBu
Frequency Response: 20Hz - 20kHz
Input Impedance: >250k Ω
Output Impedance: >600 Ω
Total Harmonic Distortion: <0.005%
Equivalent Noise Floor: >-110 dBu
Shell material: Metal
Dimensions (L × W × H): 126 × 92 × 42 mm (4.96 × 3.62 × 1.65 in.)
Weight: 710 g (25.04 oz)

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