Heritage Audio i73 Pro One｜USB Desktop Recording Interface Infused with Classic 73 Sound
The i73 Pro One is Heritage Audio’s crystallization of a classic 73-style fully discrete Class A microphone preamp and high-grade AD/DA conversion condensed into a portable USB interface. It delivers authentic iron-like character and musical saturation, combined with low-latency direct monitoring, an independent headphone amplifier, and intuitive front-panel controls. Whether vocals, acoustic guitar, or synthesizers, you can capture the signature studio tone before you enter the DAW.
Key Features
- Built-in 1-channel 73-style fully discrete Class A mic preamp that captures classic British iron character and warm saturation
- Preamp offers 48V phantom power, phase invert, and high-impedance instrument DI for easy Mic/Line/Hi‑Z switching
- Professional-grade 24-bit / 192 kHz conversion for wide dynamics and low-noise recording quality
- USB-C connectivity with low-latency direct monitoring mix for more natural and comfortable performances
- Independent high-power headphone amp and main control, so monitoring and recording do not interfere
- 2-channel balanced main outputs for professional monitors or external processing chains
- Desktop metal chassis with intuitive knobs/buttons for faster recording workflow
- Supports Loopback workflow, ideal for teaching, streaming, and content creation
- Compatible with macOS and Windows, includes control software for easy routing and mixing
- Imparts classic color before the DAW, reducing post-processing and enabling finished-sounding recordings
Technical Specifications
| Brand / Model | Heritage Audio i73 Pro One |
| Product Type | USB Desktop Audio Interface |
| Mic Preamp | 1-channel 73-style fully discrete Class A, with 48V phantom, phase invert, pad, and Hi‑Z mode |
| Analog Inputs | 1 x XLR/TRS Combo (Mic/Line), 1 x 1/4" Hi‑Z (front panel) |
| Analog Outputs | 2 x 1/4" TRS balanced main outputs, 1 x 1/4" stereo headphone output |
| Digital Resolution | 24-bit, up to 192 kHz sample rate |
| Connectivity | USB‑C (USB 2.0 compatible) |
| Monitoring Features | Hardware low-latency direct monitoring, independent headphone volume, main output volume control, Loopback |
| Compatibility | macOS, Windows (requires installation of corresponding drivers/control software) |
| Applications | Vocal/instrument recording, podcasts and voiceover, live streaming and content creation, mobile recording |
