The Warm Audio WA73 Single-Channel Microphone Preamp is a single-channel, Class-A microphone preamp designed to provide up to 80 dB of gain for engineers, producers, musicians, and vocalists in mobile-recording rigs and home, project, and commercial studios. It features custom Carnhill transformers and is wired and assembled by hand to deliver the sound and functionality of classic British '73-style preamps.
Its inputs include balanced XLR and 1/4" TRS jacks and one front-panel 1/4" TS instrument input. Input impedance, polarity, ground lift, and phantom power are switchable. Connect an outboard compressor or equaliser via the 1/4" TS insert send and return jacks. Balanced XLR and 1/4" outputs are fed by an output level control and allow compatibility with most audio interfaces and mixing consoles. The selectable high-pass filter can be set to 50 Hz, 80 Hz, 160 Hz, or 300 Hz for management of unruly bass frequencies.
The WA73 is rack-mountable and occupies 1 RU.
Key Features:
- Occupies 1 RU.
- Single-channel, Class-A mic preamp wired and assembled by hand.
- Created through years of R&D, careful reverse-engineering, and countless hours of auditioning.
- Designed to function and sound like a classic '73-style preamp.
- Fully discrete, transformer-balanced signal path.
- Custom Carnhill transformers saturate sweetly when pushed.
- Tantalum and polystyrene capacitors in the signal path and an output transistor choice that is smooth in high-gain settings.
- Stepped mic pre gain.
- Inductor-based selectable high-pass filter.
- Balanced XLR and 1/4" inputs and outputs.
- Front-panel 1/4" TS instrument input.
- 1/4" TS insert send and return.
- Output control with 5-segment LED metre.