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Compact metal direct box with quarter-inch and XLR connectors

PYLE AUDIO

PYLE AUDIO PDC21 Direct Box Car Electronics Accessory

SKU CH-94R1-0CDG6 MPN PDC21

Connects instruments to balanced XLR or unbalanced 1/4" inputs while eliminating ground loops and minimising noise

  • Labor warranty1 year limited
  • Product typeCar Stereo Add-Ons
  • Parts warranty1 year limited
  • Converts high-impedance instrument signals to balanced low-impedance output
  • Eliminates ground-loop hum for cleaner audio in car systems
  • Provides both XLR and 1/4-inch unbalanced outputs for flexible routing
  • Handles guitars, keyboards and outboard processors in live or recording use
  • Backed by over 35 years of Pyle manufacturing experience

Direct Box for Instruments

The Pyle PDC21 is a direct injection unit that converts a high-impedance, unbalanced 1/4-inch instrument signal into a low-impedance, balanced XLR output. It is designed for musicians and audio engineers who need to connect guitars, keyboards, or other line-level sources directly to a mixing console or recorder.

Balanced XLR Output Limits

The unit provides a balanced mic-level signal through an XLR connector, which allows long cable runs without the noise and interference common with unbalanced lines. It does not perform impedance matching, so the source and destination impedances must be suitable for passive bridging to avoid signal loss.

Ground Loop Elimination

The primary specification that determines suitability is the device's ability to eliminate ground loops between the instrument and the mixer. This isolation prevents hum and buzz caused by differing ground potentials in live sound or recording setups.

How it compares

Measured against everything we stock in Car Audio Accessories & Wiring, at today’s prices. Recalculated every night.

Price $4.99
Cheaper than about 96% of the 2,768 comparable items (median $21.99).

Specifications

Product
Brand namePYLE PRO
Product typeCar Stereo Add-Ons
Size & build
Shipping weight0.45 kg
Package size140 × 86 × 51 mm

Questions about this item

Should I choose the PDC21 or another Pyle direct box for my instrument?

The PDC21 is Pyle's 1/4-inch instrument-to-balanced-and-unbalanced direct box; other models handle different connectors or channel counts, so pick the one that matches your source and destination jacks.

What does the 35-year manufacturing claim mean for my sound quality?

Pyle's 35 years of production experience translates into a direct box built to deliver low distortion, minimal noise and effective ground-loop elimination when you plug in a guitar or keyboard.

How does the 1/4-inch and XLR interface limit signal level or cable length in practice?

The quarter-inch input accepts high-impedance instrument signals while the XLR output provides a low-impedance balanced feed, letting you run long cables to a mixer without added hum or level loss.

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