High Output Vacuum Tube DI Box
The Firefly™ is a studio quality direct box that combines the clarity and detail of an active DI with a tube drive circuit that provides vintage warmth and pleasing harmonics to any instrument.
- 12AX7 tube drive and class-A front end
- Dual inputs with separate gain & remote switching
- Drag control load correction for optimal tone
- Variable output connects directly to a PA
Fatten up your DI tracks
The Firefly's drive circuit utilizes a 12AX7 vacuum tube, which is the most popular tube made today and can be found in nearly all guitar amplifier designs. This helps provide the character and feel of a vintage device, while still maintaining low distortion and noise profiles common to modern pro audio equipment. The Firefly excels when used on instruments that sound too clinical or one dimensional when recorded directly, adding punch and warmth to bass or guitar tracks both on stage and in the recording studio.
Switching between passive & active basses
The Firefly is equipped with two inputs and level controls to make switching between active and passive basses easy. Add the JR2 remote control for added switching convenience.
Firefly with an acoustic guitar and mandolin
The Firefly is perfectly suited for doubling on stage using two acoustic instruments. The 4 meg-ohm piezo input enables direct connection without a preamp.
Using the Firefly with an upright bass
Whether you are connecting via a pickup/preamp combination or just direct from the passive piezo, the Firefly is perfect for string instruments. Use the variable high-pass filter to eliminate low frequency resonance and feedback.
Firefly - Peter Janis of Radial Engineering
Radial Firefly Tube Direct Box Review
"It seems like there's a lot of cool DI boxes around these days, often sporting tubes and advanced features. Leave it to British Columbia-based Radial Engineering — makers of some wildly popular direct-injection and inter-connecting boxes — to add its Firefly to the trend..."
"What this all boils down to is another big hit for Radial Engineering in its series of tube-driven direct boxes – truly a piece of art for those wishing to capture the warm tone of a tube with a solid isolation from the source. I see it being a huge hit amongst the live and session bass players and hope to see many more of these."
"This two-channel DI box - with a nice warm valve for that unmistakable sound - is a serious piece of kit, aimed both at the recording and touring musician..."
"It's rare to find something that's this well sorted - practically and aesthetically - both on stage and in the studio."
"The Firefly is a top-notch DI that imparts sweet tube warmth to all that passes through it, and the feature set gives you many advantages onstage as well as in the studio."
"Simply put, the Firefly sounds unreal. In my review, I tried every instrument I had available: acoustic guitars, electric bass, acoustic bass, farfisa organ, analog synths, digital synths, mandolin, Fender Rhodes, and a Wurlitzer 200A. I could not find anything that the Firefly didn't make sound amazing!"
"The Firefly performed in a league of its own. The sound had strength, character and beautiful resonance... During the private show we recently did, the Firefly performed liked a champion. The bass sound it renders is warm and round, yet still big and punchy. The harmonic content is fantastic."
Eric Clapton, Fourplay, Toni Braxton, Lionel Richie, Phil Collins
"The Bassbone is just what I have been looking for... I can maintain the integrity of two instruments on stage or in the studio with control over the balance and keep my high standards for my low notes!"
Barbra Streisand, Steely Dan, Ray Charles, Quincy Jones
"The Firefly has a nice fat warm sound. I am very pleased with the results. It's easy to use and sounds great!"
Engineer - James Taylor, Korn, Madonna, Andrea Bocelli, Billy Joel, Rod Stewart, David Sanborn, Foreigner, Elton John, Luciano Pavarotti, Celine Dion.
"I have been extolling the virtues of the Firefly and in fact, I pack it with me on just about every session I've done in the past two years. Most recently on Motown The Musical. You know how important the bass is on those Motown songs. The simple fact is that I love it, and along with my most trusted mics, it is brought along on every session. And for Broadway shows, the dual input is a godsend.""