Radial EngineeringStageDirect Active DI w Mute Footswitch


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Radial Engineering StageDirect Active DI w Mute Footswitch

The Radial StageDirect is a state-of-the-art active direct box designed for musicians who require extra control when they are on stage. As with most DIs, the StageDirect is equipped with a hi-Z input for the instrument, a thru-put for the stage amplifier and a balanced low-Z output for the PA system. The 'extra' comes by way of a dedicated tuner output and footswitch that mutes the signal going to the PA and stage amplifier while leaving the tuner output active. This enables the artist to mute the guitar when not in use or quietly tune in between songs.

The innovative circuit design combines a class-A FET input driver with a low noise op-amp to deliver exceptional audio at all frequencies. A -15dB pad may be inserted for extra high output instruments such as active bases or electronic keyboards. Engaging the high-pass filter gently rolls off excessive bass to eliminate clutter and run-away resonant feedback. A 180° polarity reverse switch can be used to help phase align the on-stage amp with the PA or eliminate acoustic 'hot spots' on stage by electronically moving the problem out of the way. A pair of full-sized LEDs let you know when the StageDirect is muted or ready to perform. Switching is done locally using the footswitch or may be remotely controlled by connecting a momentary (non-latching) footswitch to the dedicated ¼" connector. This enables the stage tech to mute the instrument as he hands the guitar to the artist and un-mute it as he walks off stage. Powering may be done via standard 48V phantom from the mixing console or by using the included 15VDC power supply.

Equally effective for acoustic guitar or bass, the StageDirect works as an extra stage hand by enabling the artist to change instruments without causing switching noise in the PA system.

StageDirect Active DI w Mute Footswitch Features

  • Active DI with footswitch mute & tuner out
  • Silently switch instruments on stage without noise
  • Eliminates feedback when instrument is not in use
  • Remote control lets stage tech perform switching


  • Audio circuit type: Active Buffer with class-A FET front end
  • Frequency response: 20Hz ~ 20kHz
  • Total harmonic distortion: <0.01%
  • Dynamic range: 100dB
  • Input impedance: 250K-ohms
  • Maximum input: +13dBu
  • Gain: +5dB
  • Output impedance: 250 Ohms
  • Equivalent input noise: -87dBu
  • Intermodulation distortion:     0.012%
  • Phase deviation: 8° at 50Hz
  • Instrument input: Hi-Z unbalanced ¼" female connector
  • Pad: -10dB
  • 3 position low-cut filter: Flat, -3dB @ 60Hz, -3dB @ 200Hz
  • Stage amp output: Isolated Hi-Z unbalanced ¼" female connector
  • Phase: 180° polarity reverse
  • Tuner output: Hi-Z unbalanced ¼" female connector
  • Direct box output: Lo-Z balanced XLR-M output
  • XLR configuration: Pin 1 ground, Pin 2 (+), Pin 3 (-)
  • Ground: Lifts pin 1 on the XLR
  • Polarity: Reverses pin-2 and pin-3 on the XLR
  • Local control: Footswitch mutes all outputs except tuner
  • Remote switch: Momentary (pulse) ¼" contact closure
  • Power: Auto switches between 48V phantom power or 15V external power adapter
  • Construction: 14 gauge steel chassis and outer shell
  • Finish: Baked enamel
  • Conditions: For use in dry locations only between 5°C and 40°C
  • Warranty: Radial 3-year, transferable

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Radial Engineering StageDirect Active DI w Mute Footswitch Reviews