Warm Audio WA273 Dual channel Microphone Preamp




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The Warm Audio 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.

When we at Warm Audio decided to release the WA273 it was imperative that it met vintage expectation in both design and performance. The tone and sweet character that vintage ’73-style mic preamps impart is so unique and familiar, that we had only the pure desire to release sonically accurate reproductions. After years of R&D, intense research, and countless hours of auditioning, the WA273 was born!

The WA273 is a “Desert Island” boutique preamp, but it can also be classified as a studio and live work-horse. Classic ’73-style preamps are known for being versatile tools that work with all kinds of microphones from Condenser, to Dynamic, to Ribbon.

The WA273 equally shines on all types of microphones and sources including; vocals, acoustic/electric guitars, bass, drums, percussion, orchestras, keyboards, and even as a tone shaping tool to run partial or complete mixes through. With 80dB of gain and a fully discrete Carnhill Transformer balanced signal path, there’s no recording, mixing or engineering task that the WA273 can’t handle.’/

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Additional information

Weight 1.84 g
Dimensions 60.96 × 38.1 × 15.24 cm

Product Feature's

Warm Audio WA273 2-channel Mic/Line/Instrument Preamp Features:

  • Handwired, hand-assembled 1073-style preamplifiers
  • Fully discrete, Class A, transformer-balanced circuitry
  • UK-made Carnhill Transformers
  • 80dB of gain handles any type of microphone, including low-output ribbons
  • Resistor-stepped rotary gain switches for easy recall
  • Tone buttons change input transformer impedance for mic optimization and tonal shaping
  • Polarity switches
  • 48-volt phantom power
  • 4-position inductor-based highpass filters, selectable for Off, 50Hz, 80Hz, 160Hz, or 300Hz
  • XLR mic inputs
  • Line-level TRS inputs
  • TS Send/Receive insert jacks
  • XLR and TRS line-level outputs
  • DI instrument inputs
  • Output level controls
  • LED level indication meters
  • Rugged 19″ rackmount chassis
  • Ground lift switch
  • Internal IEC 115V/230V power inlet