dbx DJD1 2-Channel Passive Direct Box

dbx DJDI 2-Channel Passive Direct Box

The dbx DJDI is a compact, road-ready direct box that converts your unbalanced instrument and line-level signals into balanced XLR outputs for seamless integration into any professional sound system. Built on a passive design that requires no power supply, it's a bulletproof addition to your live rig—delivering clean impedance matching and ground isolation that keeps your tone transparent and your signal path quiet, whether you're running keyboards, bass, backing tracks, or multi-channel inputs during gigs and studio sessions.

Audio Performance & Isolation

Transformer-isolated XLR outputs deliver a noise floor of -104 dBu (measured 22 Hz to 22 kHz with input shorted), while THD + N measures 0.23% typical at +4 dBu and 1 kHz—specifications that keep your signal clean and transparent through the entire signal chain. The ground-lift switch kills hum caused by ground loops, an essential feature for eliminating unwanted noise in balanced audio workflows.

Reliability & Connectivity for Live Use

The DJDI accepts two parallel 1/4" unbalanced TS inputs (each at 50 kOhms impedance) and outputs balanced XLR pairs at 600 Ohms impedance. An input attenuator prevents clipping when hot signals hit the box, while RF filtering on the inputs shuts out electromagnetic interference that could muddy your tone. The rugged, compact footprint—just 5.51 × 4.72 × 1.57 inches—fits seamlessly into pedalboards, racks, or your gig bag without adding bulk.

Key Features

• Passive circuit design — no power supply required
• 2 × parallel 1/4" unbalanced TS inputs at 50 kOhms impedance
• 2 × XLR balanced outputs at 600 Ohms impedance
• Transformer-isolated XLR outputs
• Ground-lift switch for hum elimination
• Input attenuator to prevent overloading from high-level signals
• RF filtered inputs
• Noise level: -104 dBu (22 Hz to 22 kHz, input shorted)
• THD + N: 0.23% typical at +4 dBu at 1 kHz
• Compact dimensions: 5.51 × 4.72 × 1.57 inches

The DJDI is the workhorse passive box that delivers rock-solid impedance conversion, transformer isolation, and professional specifications without the need for external power—the perfect tool to keep your live signal clean and your tone intact.