2-In / 4-Out USB-C interface with A built-in pure Class A transformer coupled 73 style preamp. The i73® PRO ONE is finally a reality, making the Full Analog Experience of the Golden Era of recording available to everyone, everywhere and anywhere.

The i73® PRO One aims to provide musicians, producers and audio engineers with an easy path to that cherished analog experience that has inspired music creation since the early 70’s. The i73® PRO One incorporates the same Class A transformer-balanced circuitry as Heritage Audio’s classic 73 style preamps, providing the end user with the ability to track with all that classic mojo and vibe but, for the first time, straight from the i73® PRO One to a computer.

As with all Heritage Audio’s 73 style preamps, there are three options for input, so whether the end user wants to run vocals through the MIC preamp with up to 70dBs of gain, an electric guitar/bass through the fast, dynamic JFET DI or the clean LINE inputs, the i73® PRO One allows the user to route whatever the signal may be on to a DAW with true studio quality.


When trying to define what made the Golden Era of recording so appealing even by today's standards Heritage Audio noticed that those legendary spots used just the right amount of gear when tracking, focusing on the music and the musician.

i73® PRO takes this concept to every musician’s home studio by supplying the right tools when monitoring their work, straight out of the box.

That is why all i73® PRO interfaces come packed with a growing collection of DSP powered recording effects modeled after Heritage Audio’s own outboard and Heritage Audio’s private collection of vintage gear.

These unique DSP powered audio effects are also supplied in native form with easy recall function so everyone can capture tracks into their DAW (both processed and unprocessed) and complete the job taking advantage of a modern home studio workflow.



  • Built-in Class A transformer-coupled 73 Style preamp
  • PAD, PHASE, and PHANTOM controls
  • MARCONI KNOB to control INPUT gain
  • OUTPUT attenuators
  • LED VU Meter: selectable preamp INPUT gain or monitor OUTPUT signal
  • MONO, MUTE, and DIM controls conveniently accessible
  • DUAL ENCODER for simultaneous control of monitor and headphone levels
  • Mini-DIN IN/OUT MIDI connector
  • USB-C to connect to computer
  • 12VDC power adapter
  • Monitor outputs (L & R)
  • Extra LINE INPUT


  • 2-In / 4-Out USB-C Audio Interface.
  • 1× Class A 73 style preamp with up to 70dB of gain for true studio-quality recordings.
  • 1x Extra line input. 
  • Analog stereo monitor output over TRS independently controlled by Heritage Audio’s MIXER.
  • Independent stereo headphone output with dedicated cue. 
  • Recording, mixing and playback at up to 32-bit/192kHz.
  • +48V PHANTOM power, PAD and PHASE. 
  • MONO, MUTE and DIM.
  • Mini-DIN MIDI IN/OUT connector.
  • Classic attractive European console.
  • Compatible with MacOS and Windows 10 and 11. Same hardware works for both PC and Mac.
  • Direct monitoring with Heritage Audio’s MIXER, processed in real-time with unnoticeable latency.
  • Full Analog Experience powered by DSP for real-time tracking processing with undetectable latency.
  • Including a growing collection of Heritage Audio effects modeled after Heritage Audio’s own outboard and Heritage Audio’s private gear collection.
  • Able to record both WET and DRY streams from the MIXER to your DAW at the same time.
  • Class-leading AD/DA conversion .
  • USB-C connection to computer (cable included).
Bananas At Large Inc

Bananas At Large Inc

Heritage Audio
Brand New
9 Years
Bananas At Large Inc
Bananas at Large
San Rafael, CA
7:59 PM
Monday - Saturday (11:00am - 6pm PST) Sunday (11am - 3pm PST)

We accept major credit and debit cards - Visa, MasterCard, Discover, and American Express. We also accept Paypal. Please contact us for Western Union. Orders must be approved by our authorization process. This includes validation of the shipping address with the issuing bank.

About Shipping and Delivery We utilize legitimate bonded and licensed shipping carriers only (UPS, Fed Ex, USPS etc). We are not the shipping company and therefore cannot be held responsible for faults that lay with the shipping company. By placing orders with us you agree to be present to receive packages sent to you. Bananas cannot be held responsible for lost packages once they are logged as delivered by the shipping company. Once a package is logged as delivered by the shipping company the customer is responsible for any issues related to the delivery of the package at that point. Packaging and Shipping Information Due to conditions beyond our control (weather, shipper's handling etc.) some boxes that products originally come in cannot be re-used to ship out to customers. In those rare cases we will remove and inspect all items and repackage them in acceptable boxing to make it safe to you. All items are still considered brand new, under full warranty and fall under our same guarantees. Note: Bananas recycles unused boxes when possible.

Online Returns: In order to return a product, Request a Return Authorization Number (RA Number). To request a Return Authorization Number (RA Number), please email with your full name, order number, item that you are returning, and what type of return you would like us to process - either exchange for the same item, exchange for another item, or return for refund. In addition, if you can include the reason for your return, and any other comments, that would be appreciated. Once we process your RA request, we will send you a Return Authorization Number, and instructions on how to return the item. Return and Customer Satisfaction Policy: Any item (other than as noted below) purchased from Bananas at Large online store may be returned, within 45 days of the shipment date, for a full refund of the purchase price minus shipping costs, or for exchange or credit. Rather than make you click elsewhere for the 'small print', here it is in not-so-small print: The following items may not be returned: Consumable items such as (but not limited to) strings, picks, drum sticks, drum heads, phono cartridges and replacement speakers. Any item that is worn on the body or is blown into, such as (but not limited to) earplugs, wind controllers or harmonicas Computer software, items that can be copied and copyrighted material such as (but not limited to) books, videos and CD's Installed items such as (but not limited to) guitar pickups, drum heads, headphone parts and other installed parts If you agree to back order or special order a product, you agree that order may not be canceled unless approved by Bananas. Special orders already in transit either from manufacturer or Bananas cannot be canceled. Special order items may be returned if defective for exchange. You will be notified what items qualify as special order status. *In-store sales, please see posted Return Policies Other Things You Need to Know about Online Returns Shipping and/or handling charges are not refundable. It is your responsibility to pay return shipping and to fully insure the unit(s) you are returning. Also, it is your responsibility to cover shipping charges for sending the item to you. If you are quoted free shipping and return the item, you will be required to cover the actual shipping costs incurred by your order. Items that are returned must be in the original packaging, with all accessories and paperwork included in the original shipment, such as owner's manual(s) and warranty card. Items must be free from signs of use or wear, and both warranty card and manual(s) must not have any writing in them. If your order was shipped to you in outer packaging it must be returned in that packaging as well as the inner box or boxes. Returned items that do not arrive in the condition described above are subject to a $25 repackaging charge, plus the cost of replacing missing, soiled, worn or marked-on items. Obvious signs of use that reduce the value of a returned unit will be subject to additional charges based on how much we need to mark down the unit to make it sellable.