Firefly
The Firefly is a tube direct box with two inputs, a 12AX7 tube drive stage and a class-A front end, intended for bass, acoustic and string instruments in studio and stage use. The manufacturer lists it as discontinued.
- 12AX7 tube drive with class-A front end
- Dual inputs with separate gain controls
- Remote input switching (JR2 remote control)
- Drag control for load correction
- 4 meg-ohm piezo input; variable high-pass filter
- Discontinued by the maker
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The Firefly combines an active direct box with a tube drive circuit that adds warmth and harmonics to an instrument signal. It uses a 12AX7 tube and a class-A front end, and a drag control corrects the load the instrument sees to help shape tone.
Two inputs, each with its own level control, make it easy to switch between instruments such as an active and a passive bass. Remote switching is possible with the optional JR2 remote control. The 4 meg-ohm piezo input allows acoustic instruments to connect directly without a preamp, and a variable high-pass filter helps remove low-frequency resonance and feedback, for example with an upright bass.
The variable output is designed to connect directly to a PA system. The part number is R800 2020 00. The maker notes the product is no longer shipping, with specifications and user information kept available for owners.
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Specifications
- Brand
- Radial Engineering
- Model
- Firefly
- Category
- Studio › Preamps and outboard
General
- Part number
- R800 2020 00
- Type
- Tube direct box
- Status
- Discontinued, no longer shipping
Inputs
- Inputs
- 2, with separate gain controls
- Piezo input impedance
- 4 meg-ohm
- Remote switching
- Via JR2 remote control
Outputs
- Output
- Variable output, connects directly to a PA
Audio
- Tube
- 12AX7 tube drive
- Front end
- Class-A
- Load correction
- Drag control
- Filter
- Variable high-pass filter
- Circuit type
- Active DI with tube drive