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Radial Engineering Firefly Tube Direct Box

Item#
N13-1971
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$599.99

Radial Engineering Firefly

The Firefly, from Radial, is a tube DI box that is ideal for use on the stage or in the studio. It is essentially a synthesis of Radial’s zero negative feedback class-A front end and a 12AX7 tube drive circuit. Combine these two features with Radial’s proprietary transformer-coupled output and its easy to see why the Firefly is one of the most distinctly warm DIs on the market.

The unit features A and B instrument inputs with corresponding level controls that make it easy to facilitate changes while performing. For example, using the Firefly allows artists to alternate between two separate instruments while delivering a sustained signal to both the PA and amplifier. Switching does not necessary have to be accomplished via the front panel switches, convenient as they may be. No, users can utilize the JR2 control to achieve this function remotely. The control connects to the Firefly via unbalanced cable and affords a simple means of muting signals, providing ample time for live adjustments.

Firefly Features

  • Class-A front end drives 12AX7 tube stage
  • Two inputs with separate gain & remote switching
  • Drag Control load correction for optimal tone
  • Audio circuit type 100% discrete class-A FET with tube drive
  • Frequency response: 20Hz ~ 20kHz
  • Gain: 20dB (Maximum)
  • Signal to noise ratio: 85dB @ +4dB
  • Dynamic range: >100dB
  • Noise floor: -98dB at unity gain
  • Equivalent input noise (EIN): -101dB
  • Maximum input: Variable from -12dB ~ +20dB
  • Total harmonic distortion: 0.15% from 20Hz ~ 20kHz
  • Inter-modulation distortion: 0.3%
  • Inter-modulation distortion: 0.3%
  • Input impedance - Drag On: Variable 22k ~ 500k
  • Input impedance - Drag Off: 3.9 meg-Ω
  • Output impedance: 150Ω (nominal)
  • Inputs: Selectable A or B with standard hi-Z 1/4" connectors
  • Input pad: Variable
  • Mute: All outputs except tuner, requires JR2 footswitch
  • Low-cut filter: Variable from 5Hz ~ 500Hz @-3dB
  • Low-cut filter: Variable from 5Hz ~ 500Hz @-3dB
  • Drag Control: Load correction fro magnetic pickups
  • Aux output: Hi-Z buffered, pre or post tube & effects insert loop
  • Insert loop: 1/4" TRS insert wired tip-send, ring-return
  • Polarity: 180°
  • Ground lift: Pin-1 at the XLR
  • XLR configuration: AES standard: pin-1 ground, pin-2 (+), pin-3 (-)
  • Power: 5-pin XLR, +/-16V & 48V, 1600mA
  • Construction: 14 guage steel, baked enamel finish
  • Size: 5.75" x 8.25" x 1.75" (2.75" with handle) 146mm x 210mm x 45mm (70mm with handle)
  • Weight: 3.95lbs. (1.80kg)
  • FCC approval Complies with section 15 of the FCC Rules
  • Warranty: 3 years, transferable
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