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Thought you’d always need your amp for a great tone?

Well the REDDI is your standalone solution for a world class bass sound.

A bold statement, yes, but one of many just like it said of The A-Design’s Audio REDDI all-tube DI by an ever increasing number of professional bassists and recording professionals (see below). Designed and built by former career studio bassists, the REDDI has been hailed by engineer and bassist alike as the best-sounding DI around. Inspired by the glorious sound of the Ampeg B-15 tube bass amp, its 6N1-P tube-driven amplifier feeds signal directly into a hefty custom output transformer, which is key to providing a harmonically rich tone. Its wide-bandwidth design from 20Hz to 60kHz reduces in-band phase shift, which results in greater detail and realism in the audible spectrum. Another big plus of its wide-bandwidth design is the prevention of LF phase shifts by maintaining a linear response extending below the audible bass range, which is the secret to achieving a big, full sound.

Complementing its distinctive bright red steel chassis, the A-Designs Audio REDDI has a front-panel Neutrik XLR/1/4″ combo input jack, balanced XLR output, and a 1/4″ thru-put, for those who desire the reassurance of sending signal to a bass amp (before they wind up discarding the miked track and go with the REDDI track alone). There is also a 0-16dB-gain control on the front panel as well. Take note, the REDDI is not a high-gain device. Gain has been carefully designed and controlled in order to avoid the slightest compromise to sound quality. Finishing up the front panel is an extremely bright blue LED power indicator. The exceptional brightness of the LED was intentionally provided for easy visual confirmation that the REDDI is powered on, and also to temporarily blind annoying A&R reps lingering in the control room. On the back panel are toggle switches for power and ground lift, along with the REDDI’s IEC power connector.

Not just for bass, the REDDI’s all-tube circuitry can enhance the character of any instrument run through it; with an airy top end to go with the full, rich mids and bass it also imparts. That’s why Grammy-winning producer Ted Perlman (Chicago, Bob Dylan, Burt Bacharach, Elton John) runs all his guitars through the REDDI. And as long as we’re on the subject, the ever-increasing list of world-class bassists and engineers who rely on the REDDI includes notable bass players, such as Reggie Hamilton, Justin Meldal-Johnsen, Viktor Krauss, Jamiroquai’s Paul Turner, Steve Bailey, Don Boyette, Carlitos del Puerto, and Millard Powers of Counting Crows; along with producer-engineers such as Tony Sheppard, Dylan Dresdow, Ross Hogarth, Billy Bush, Ronan Chris Murphy, and Russ Long.

In fact, you can read below what those industry giants are saying about the A-Designs REDDI. And once you listen to the audio examples at BassTasters REDDI Audio Clips, you’ll also find that the REDDI speaks quite eloquently for itself:


 • All-tube direct box with custom output transformer
• Ultra wide frequency range (20Hz-60kHz)
• Neutrik input connector, balanced XLR out, and 1/4″ thru jack
• Inspired by the Ampeg B-15
• Clean and airy high end, warmth, transparency, and ultra high-quality sound
• Level control
• Ground lift
• Ultra bright blue LED on/off lamp
• Zero-feedback loop design
• Massive, custom-wound transformers
• 6NI-P tube
• Low-Z, transformer-balanced output


 • Frequency Response 20Hz – 60kHz
• Input impedance: 1M ohm
• Gain range: 16dB
• Noise (EIN): -126dB
• Output impedance: 600 ohm
• Maximum level: +22dBu
• Distortion THD: > .08 @ 1kHz
• Power Requirements: 100/120/230VAC – 42W
• Dimensions (W x H x D) 3-1/2″ x 3-1/2″ x 14-1/2″
• Weight 10 lb. (4.54 kg.)

REDDI Documentation


Read what the industry is saying about the A-Designs Audio REDDI:

“I didn’t use an amp at all. I used only the REDDI and it sounded really, really nice.” — Justin Meldal-Johnsen, bassist with Beck

“The sound of the REDDI all-tube direct box on my bass and guitars is dramatic. When people come in and listen, they just go “WOW what’s that? What did you do to get that sound?” “It not only delivers on bass and keys, but just out and out kills on acoustic guitars with pickups. It puts something on the sound that makes them jump and be present in the mix without that “electric-type” sound.” — Ted Perlman, Grammy Award-winning producer, engineer, musician (Bob Dylan, Chicago, Elton John, Burt Bacharach).

“Now, the REDDI is my favorite DI and definitely my go-to on bass.” — Dylan Dresdow (Black Eyed Peas), Grammy Award nominee, Tech Award nominee, engineer.

“If it needs to be really clean, then I’ll just use the REDDI.” — Viktor Krauss, bassist for Lyle Lovett

“The New REDDI DI from A Designs kicks ass… — Ross Hogarth, Grammy Award-winning producer, engineer, mixer

“REDDI’s first outing was on an active bass. The bass player’s head turned as soon as he heard his instrument in the phones. It was an instant hit both in and out of the control room.” — Kevin Becka, Mix Magazine

The best way I can describe what REDDI adds is dimension. It reveals a wide range of harmonics in a source, with an excellent translation of an instrument’s character. It doesn’t have to be blended with an amp signal to sound good. I tried it with electric guitar and bass as well as a synthesizer, and found the REDDI to perform impressively on every source.” — Frank Moldstad, Digital Pro Sound

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