The legendary 1073 wrote the book on characterful mic preamplification and EQ. These venerable circuits helped define the punchy sound of ’70s rock — and countless recordings and live concerts ever since. Today, this coveted tone can be yours for a song, with the Warm Audio WA273-EQ mic/line/instrument preamp. In both design and performance, the 2-channel WA273-EQ pays homage to the revered British console lineage that started it all. Throughout the audio industry, the 1073 is considered the holy grail of preamps and EQs, with a rich, sweet, and bold tonality that’s ideal for making audacious statements with your music. After years of R&D, painstaking reverse-engineering, and countless hours of listening, Warm Audio captured the sonic essence of this classic perfectly in their boutique WA273-EQ. With 80dB of gain and a fully discrete transformer-balanced signal path, the sound is a revelation: harmonically rich bottom end, focused midrange, and slightly resonant highs.
There is no source that doesn’t sound amazing through the Warm Audio WA273-EQ. With judicious mic selection and placement, drums are larger-than-life; DI bass and keyboards sound massive and synths become trance-inducing; electric guitars soar; vocals rule. Pianos and acoustic guitars are resplendent. Orchestral instruments — strings, woodwinds, brass, and percussion — achieve ineffable lushness and dimension. You can even use the WA273-EQ as a tone-shaping tool to run stems or complete mixes through. Hear what the WA273-EQ can do for your own recordings. It’s transformative.
Definitive British EQ
The EQ sections of the WA273-EQ adhere to the classic 1073 circuit topology. The vintage 1073 is the holy grail of EQ, and the WA273-EQ nails its sonics and behavior (complete with its fabled harmonic distortion). It’s a three-band affair, with HF shelving at 10, 12, and 16kHz; midband peaking with selectable center frequencies at 360Hz, 700Hz, 1.6kHz, 3.2kHz, 4.8kHz, and 7.2kHz; and LF shelving, selectable at 35Hz, 60Hz, 110Hz, and 220Hz. A highpass filter, selectable at 50Hz, 80Hz, 160Hz, and 300Hz, lets you trim your signals of unwanted low end. If you’ve never worked with a 1073-style EQ before, all we can say is: you’re in for a serious treat. It’s worth noting that the original 1073 offered only a fixed 10kHz shelf, and the additional high-frequency flexibility afforded by the WA273-EQ is most welcome.