SKU: 27609243989

Heritage Audio 73-DI-ONE One Active Single Channel DI Box

Sale price$150.30 Regular price$167.00
Save 10%

Pay in installments of $41.75 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 20 - Aug 25

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Heritage Audio 73-DI-ONE One Active Single Channel DI BoxInject virtually any passive instrument in your repertoire with vintage warmth and life with the Heritage Audio 73DI One, a DI box based on the classic 73 style preamp with a high impedance JFET on the input and a balanced, transformer isolated output stage. With the custom built transformer, you can enhance bass, keys, synths, and more with wonderful low mid saturation. The discrete Class A JFET input stage is the same found on all of Heritage's top

Inject virtually any passive instrument in your repertoire with vintage warmth and life with the Heritage Audio 73DI One, a DI box based on the classic 73-style preamp with a high-impedance JFET on the input and a balanced, transformer-isolated output stage. With the custom-built transformer, you can enhance bass, keys, synths, and more with wonderful low-mid saturation.

The discrete Class-A JFET input stage is the same found on all of Heritage's top-of-the-line audio products. The 73DI One offers excellent signal integrity and superior noise rejection thanks to its premium circuit components and gold-plated I/O connectors. The DI box provides a -15 dB input pad for overly hot signals and a ground-lift switch for eliminating grounding loops. The enclosure is constructed from durable 14-gauge steel for complete protection of the internal MIL-spec PCB. Along with metal switches, this DI box is built to last, even under intensely rigorous usage. Input and thru jacks are 1/4" and the output is over XLR 3-pin. The unit runs on standard +48V phantom power and sports a red LED indicator light to let you know it's circuit is receiving power.

A Design 15 Years in the Making

Heritage Audio have been lovers of the 73-style topology since the very beginning. After years of consideration, they've managed to adopt the legendary 3-transistor topology to provide a top-notch DI at a reasonable price. The first transistor in the 73 stage was substituted by a J109 JFET, yielding a 2.2-megohm input impedance instead of the 47 kilohms in the original circuit.

A clever design on the power supply section allows it to keep the metal can 2n3055 output transistor that directly drives the custom-developed silicon steel grain-oriented output transformer, which is a phantom power-friendly version of the venerable LO1166, custom built to enhance the natural performance of your instrument in the same, unique way that a vintage 73 preamp will enhance a mic signal.

Versatile and Pristine

Being a transformer-based unit, its output is isolated from the instrument and there is a further provision for lifting the ground, as well. An additional -15 dB pad switch helps with hotter instruments and even allows speaker outputs to be plugged into the 73DI One. A thru parallel connection rounds out the pack, and all I/O jacks are gold plated and isolated from chassis.

Bring Out the True Tone of Every Instrument
Usually, active DI boxes work best with passive circuitry instruments like guitars and basses, but thanks to the 73DI’s high-input headroom, it can also be used wonderfully on keyboards, synths, drum machines, and samplers when plugging directly into a PA or recording system is required. Passive basses such as precision and jazz bass suddenly acquire a new life, with a sparkling high end, a solid bottom end, and that low midrange saturation the 73 is famous for.

Instruments like the Fender Rhodes produce their full body and bell-like tone like never heard before. Saturation makes Wurlitzer electric pianos growl like they’re being amped without the hassle. The possibilities are endless.

Just the Right Touch of Vintage Warmth and Vibes

This meticulously engineered design is what gives the 73DI its outstanding performance, delivering a rich, dynamic direct sound that fully captures the harmonic complexity of any instrument and even pre-recorded tracks. An attractive yet protective 14-gauge steel enclosure with MIL-spec circuit board makes the 73DI virtually indestructible and totally roadworthy, with all connections recessed for dumb-free operation.

Features

  • Ideal for Passive Instruments
  • Based on Vintage 73-Style Preamp
  • 3-Transistor Topology with J109 JFET
  • Custom-Built Transformer
  • Transformer-Isolated Output
  • Selectable -15 dB Pad and Ground Lift
  • 1/4" Input & Thru Jacks, XLR 3-Pin Out
  • Gold-Plated I/O Jacks
  • Rugged 14-Gauge Steel Enclosure
  • Operates on Standard +48V Phantom Power

Specifications

Item Type
Standard DI
Number of Channels
Single-Channel
Active/Passive
Active
Circuitry
Solid-State (JFET)
Preamp
Pad
-15 dB
Ground Lift
Yes
Polarity Reverse
No
EQ & Tone Shaping
Low-Cut/High-Pass Filter
No
Connectivity
Audio I/O
1x 1/4" TRS Balanced Input
1x 1/4" TRS Balanced Thru
1x XLR 3-Pin Balanced Output
Performance
Input Impedance
2.2 Megohms
Power
Operating Voltage
48 V (Phantom Power)
Physical
Dimensions
8 x 6 x 4" / 20.3 x 15.2 x 10.2 cm
Weight
1 lb / 0.5 kg
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 27609243989

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.9 ★★★★★
Based on 6 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
Amanda
Carnegie, US
★★★★★ 5
A good read
Format: Kindle
A good read, just fluffy cuteness, no antagonism. I like all the characters. It could have used another round of editing however, glanfds being one error that cracked me up, and my personal pet peeve was that the author kept using the word fill instead of feel, which I promise you are not interchangeable haha, but it's definitely better than the majority of books I read on here mistake-wise.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 28, 2024
C
Verified Purchase
Cecy Melero
San Leandro, US
★★★★★ 4
amazing
Format: Kindle
Knot the Bride was a fantastic read! The characters were all amazing and well-developed. It was easy to like them all. Sophia, Luca, Nick, and Gavin were all perfect for each other. It was such a charming story that had me hooked the entire time. I did wish there were POVs from Luca, Nick, and Gavin but it was still an amazing book without it. I am excited to read the next book in the Willowside Omegaverse series! This is definitely a must-read for fans of omegaverse romance!. I received a free copy of this book and am voluntarily leaving a review.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2025
T
Verified Purchase
Tara
Grantham, US
★★★★★ 3
3 Star Read,
Format: Kindle
This book wasn't bad, but wasn't my cup of tea. It's highly disappointing because the storyline is so original. There is no real conflict or resolution, so the entire thing feels flat. As a lover of omegaverse books, I know there is a ton of variety out there, and ov is really up to the author. But this one is weird. Omegas have multiple scent glands all over their bodies and go into week long heats every month. Alphas have knots in the middle of their shaft instead of the base, and the knot doesn't always swell, no explanation of when or why. It doesn't engage at all when the mouth is in play. I also didn't enjoy the author's writing style. Each paragraph is only 1 or 2 sentences long, and the entire book reads very stacato. The conversations are stiff and unnatural feeling. Everything is very repetitive, both in word choice and in thought. The same thing is repeated 3 or 4 times over a single page, multiple times over. I ended up doing so much skimming. The first 50% of the book is all slow burn, and the last 50% is almost straight mediocre spice. This wouldn't have been all bad if the grammar and spelling errors didn't start at the exact same time. Tongue is repeatedly misspelled in the middle of the spice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 14, 2024
D
Debby & Brian
New York, US
★★★★★ 5
Cozy Omegaverse
Format: Kindle
This is the true definition of Cozy Omegaverse. LA wedding coordinator meets her pack at the location for a couple’s destination wedding. Low angst because they are scent matched high heat with heats and knots. Everything you love about this genre with very little anxiety. Simply a fun experience to read and a book I will comeback to when I’m in a slump. I simply love reading this book
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026
I
Verified Purchase
Iputmybookdownforthis
Draper, US
★★★★★ 4
Cute Omegaverse story
Format: Kindle
3.75 stars and 2 for spice. Adorable Omegaverse story about a wedding planner who has to go to a small town to plan a wedding for a movie star. While there, she meets her pack. This covers her struggles of not living there but trying to keep her relationship going with her 3 Alphas. It's a quick read and cute, so I recommend it for people who like light-hearted RH stories.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2025

recommand products