Heritage Audio

i73 PRO One

2x4 USB-C interface with integrated 73 style preamp

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i73 PRO One line art

The i73 PRO One aims to provide musicians, producers and audio engineers with an easy path to that cherished analog experience that have inspired music creation since the early 70’s. The i73 PRO One incorporates the same Class A transformer-balanced circuitry as our classic 73 style preamps, so you’ll be able to capture your signals with all that classic mojo and vibe but, for the first time, straight from the i73 PRO One to your computer.  

As with any of Heritage Audio’s 73 style preamps, a three way input is implemented so, whether you want to track vocals through the hearty MIC preamp with up to 70dBs of gain, an electric guitar/bass through the fast, dynamic JFET DI or the clean LINE inputs you’ll be able to route whatever the signal may be on to your DAW with true studio quality.  

But a 73 style Class A preamp is only the gate to get to the Full Analog Experience we were seeking... a low latency monitoring mixing console has been developed from the ground up so you’ll always hear what you need to, either through your speakers or headphones, each with their own, independent configurable mix within the Heritage Audio MIXER running inside the i73 PRO One.  

We are almost there but…let’s take it one step further! Process your tracks in real time within Heritage Audio’s MIXER with an ever growing comprehensive set of tools modeled after Heritage Audio’s own outboard and private gear collection running internally over i73 PRO One’s DSP. Record both DRY and WET streams from the MIXER to your DAW at the same time. You can even insert third party native plugins via the MIXER’s Aux channels.

i73 PRO One gives you the right tools to monitor your work just like in the Golden Era of recording studios out of the box so you can capture your tracks in to your DAW and finish the job taking advantage of a modern home studio workflow.

The i73 PRO One is our entry level interface but has two bigger brothers offering more I/O and features…the i73 PRO 2 and the i73 PRO EDGE, so you have options to choose whichever best suits your needs.

All i73 PRO environment has been carefully developed for over 2 years by a team of musicians, producers and engineers to ensure an outstanding user experience for all type of users, from the home recording artist to the big studio engineer. i73 PRO One is fully designed by musicians for musicians.


  • 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. Microphone/line input, on combo XLR jack and dedicated JFET DI input for Hi-Z instruments.

  • 1× Extra line input.

  • Full Analog Experience powered by DSP for real-time tracking processing with imperceptible latency.

  • Direct monitoring with Heritage Audio's MIXER, processed in real-time with imperceptible latency.

  • Analog stereo monitor output over TRS controlled independently by Heritage Audio's MIXER.

  • Stereo headphone output independently controlled by Heritage Audio's MIXER.

  • 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.

  • Recording, mixing, and playback at up to 24-bit/192kHz

  • +48V PHANTOM power, PAD, and PHASE.

  • MONO, MUTE, and DIM.

  • Class-leading AD/DA conversion.

  • USB-C connection to computer (cable included).

  • Classic attractive European console design.

  • Mini-DIN IN/OUT connector.