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A Designs REDDI 1-channel Tube Direct Box Certified Open Box , $855.00 - Add to Cart Skip to Product Information

A Designs REDDI 1-channel Tube Direct Box Certified Open Box

All-tube Direct Box with Level Control, Ground Lift, and Neutrik Combo Jack
A Designs REDDI 1-channel Tube Direct Box
A Designs REDDI 1-channel Tube Direct Box

Certified Open Box Savings!

Save $95 What is Certified Open Box?

The price below reflects your savings.

Savings: $95.00 New for $950.00

! 3 people have this Certified Open Box item in their cart. Order now before it's gone!
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A Designs REDDI 1-channel Tube Direct Box Certified Open Box

Certified Open Box Savings!

Save $95 What is Certified Open Box?

The price below reflects your savings.

Savings: $95.00 New for $950.00

Welcome to the All-tube, Analog Sound of REDDI

This article was Written By

Our Product Research Team

Get to know them!

The A designs REDDI Tube Direct Box is a unique unit. By "unique" we mean the effort placed into the REDDI to produce a sound and character all its own. That effort took A Designs Audio back to a place in time when the Ampeg B15 reigned supreme - making liberal use of tubes and transformers. The A Designs REDDI endeavors to not only rebuild that tone, but also bring that sound to pro audio. Plug a Bass into a REDDI and it's a step back in time. Thick, round, solid sounding Bass notes that sit perfectly in the mix. A Designs REDDI is also great for guitars, synths, and any other electronic instrument that requires a direct box for recording. In fact, some recording engineers at Sweetwater have said that REDDI is the "best tube DI ever made."

Tube Direct Box

The A-Designs Audio REDDI does not add tremendous amounts of gain as the point of this DI is tone, not huge increases in volume. A tube-based amplifier using the 6N1P output tube feeding an A Designs custom-wound output transformer provides the circuit path for your guitar or bass giving you a sound that you can't get through any other device.

It's all about the transformers

With any Tube gear, one of the key factor is transformers; both audio and power supply transformers. A Designs Audio custom-builds their own unique audio output transformer to produce the specific sound they're after. To keep the REDDI at its lowest noise level A Designs employs a special toroid transformer in the power supply - no wall warts or off the shelf transformer here!

Combo XLR/1/4" input connectors

Using the combination XLR and 1/4" input connectors makes the REDDI a more versatile unit. The 1/4" will handle the bass, guitar, keyboards, and MPC/Drum machines, while the XLR can be used with dynamic microphones for recording duties on snare, kick, or other instruments. The REDDI now ships with a 1/4" throughput as well.

Drop Dead Red Metal Casing

It is only fitting that a unique box like the REDDI should look unique. With a long chassis and a fire engine red finish (Red DI, get it?), the REDDI is impossible to miss even in a dark recording studio. The bright blue LED Power indicator can be seen across the stage, which makes the REDDI a very attractive package for both the engineer and musician.

A Designs REDDI Features:

  • Vacuum-tube design
  • Tone and sustain forever, clean and airy high end, warmth, transparency, and quality sound
  • 16dB gain
  • Continuously variable level control
  • Ultra-bright blue LED lamp on/off
  • Huge, custom-wound output transformer
  • Neutrik Combo XLR 1/4" Input connector
  • Balanced XLR output connector
  • 1/4" Through-put
  • Heavy-duty Carling toggle ground lift switch
  • Internal power supply
  • 6NI-P Tube
  • Frequency Response 20Hz - 60kHz
  • Distortion THD: > .08 @ 1kHz
  • Dimensions: (W x H x D) 3.5" x 3.5" x 14.5"
  • Weight: 10 lbs. (4.54 kg.)
  • Fire Engine RED metal casing
What is Certified Open Box Gear?

At Sweetwater, we're so picky that what we call "Certified Open Box" is actually better than what most music retailers sell as "new" gear! Our gear hasn't endured hundreds of people a week plunking away at all the keyboards, fumbling through Stairway to Heaven on every guitar or playing with every fader and knob on a mixer or control surface.

Certified Open Box (also known as a demo) means we’ve had it out of the box for our YouTube channel, displayed at events, tested in our studio, or maybe it was in a customer’s hands for a few days and isn’t ‘factory fresh’ as a result. Every Certified Open Box item we sell has Sweetwater’s 2-year Total Confidence Coverage™ warranty and has been tested and verified up to ‘new’ specs by our factory-authorized technicians to make sure it’s in perfect working order before we ship it to you.

When you buy a Certified Open Box item at Sweetwater, you get:
  • 2-year Total Confidence Coverage Warranty™!
  • Products inspected and tested by our factory-authorized techs, guaranteed to function like new (or better)!
  • FREE shipping on most items
  • Equipment that will MEET or EXCEED your expectations!

Click HERE to browse our current inventory of Certified Open Box equipment. Purchasing Certified Open Box gear from Sweetwater is a smart and safe way to save!

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage

Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.