Radial EngineeringJD7 Injector Guitar Signal Distributor


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Radial JD7

The Radial JD7 Injector allows your guitar signal to drive as many as 7 amplifiers simultaneously without loss or coloration. Front panel control makes selecting amplifiers, ground paths and polarity (phase reversal) easy. The JD7 has a Class-A audio signal path that has been optimized for use with electric guitars and is 100% discrete (no op amps or chips) producing the most accurate and faithful signal at each output. To eliminate problems such as 60 cycle hum caused by ground loops without signal degradation, the world's finest audio transformers by Jensen are employed. The Radial JD7 also features a 600-ohm balanced direct output to allow the engineer to record a dry guitar track or to use the JD7 as a direct box. A balanced input allows a pre-recorded track to be sent back into the JD7 which can then drive amplifiers, effect pedals, and other devices.

JD7 Features

  • 1-in, 7-out signal routing system for guitarists
  • One-touch super-intuitive operation of all functions
  • Class-A circuit, Jensen transformer isolated outputs
  • Natural sound does not introduce artifacts to the signal
  • Drag control re-creates guitar to amp relationship
  • Audio circuit type: 100% discrete class-A with transformer isolation
  • Frequency response: 20Hz ~ 20kHz (± 1dB)
  • Signal to noise ratio: -115dB (0dBu input)
  • Dynamic range: 125dB (unbalanced input to unbalanced output)
  • Noise floor: -115dBu (direct output-1) -115dBu (isolated outputs)
  • Maximum input: +13dBu (unbalanced ¼" instrument inputs-A & B) +23dBu (balanced line-level reamping input)
  • Total harmonic distortion: 0.05% @ 1k (direct output-1) 0.05% @ 1k (isolated outputs) 0.1% @ 1k (balanced DI mic-level output)
  • Inter-modulation distortion: 0.2% @ -20dBu
  • Input impedance: Variable from 10k Ohms ~ 1megaOhm
  • Output impedance: ¼" unbalanced: 10k Ohms; XLR balanced: 150 Ohms
  • Input select: A or B selectable inputs
  • Input pad: -8dB (input B)
  • Phase reverse: 180º polarity reverse (isolated outputs)
  • XLR output: Transformer isolated DI out with phase rev. & gnd lift
  • XLR input: Balanced line-level Reamp input with gnd lift
  • Ground lift: Isolated channels 2 thru 6; Bal XLR I/O
  • XLR configuration: AES standard (pin-2 hot)
  • Power: +15VDC/400mA adapter included
  • Construction: 14 gauge steel chassis & outer shell, baked enamel finish
  • Size: 17.5" x 6" x 1.75" (44.5 x15.25 x 1.75cm)
  • Weight: 7.5 lb (3.4 kg)
  • Shipping size 22" x 10" x 4.5" (55.9 x 25.4 x 11.4cm)
  • Shipping weight 8lbs (3.63kg)
  • Warranty: Radial 3-year, transferable
Radial Engineering JD7 Injector Guitar Signal Distributor Reviews