Warm Audio WA273-EQ Microphone Preamp & EQ

Warm Audio

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Product Code: 1242
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The Warm Audio WA273-EQ Microphone Preamp & EQ is a dual channel '73-style Preamp & EQ that pays careful homage to British audio history. The sound of the WA273 has defined the tone of pop/rock records for decades!

If there's one style of preamp that professional engineers would unanimously agree has defined the tone of pop/rock records for decades, it would most definitely be the venerable '73-style of mic pre. '73-style preamps have been massively used in recording and live applications for many years and are still considered to be the "Holy Grail" of preamp choices today. The Warm Audio "WA73 Family" consists of single and dual channel '73-style preamps (with & w/out EQ), that each pay careful homage to British audio history.

When we at Warm Audio decided to release the WA273-EQ 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, careful reverse-engineering, and countless hours of auditioning, the WA273-EQ has been born! The WA273-EQ 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-EQ 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-EQ can't handle.

UK Custom Carnhill Transformers
Enthusiasts unequivocally get excited about the components used in classic '73-style British preamps. The signal transformers are a common topic of conversation. Vintage units used various versions of transformers throughout the years, but the most coveted were the earliest versions. These are regarded as the most desirable choice due to their fluid and forgiving nature. They saturate sweetly when pushed, and have been known to make engineers cry when they hear how beautiful their mixes sound through them! Warm Audio worked closely with Carnhill Transformers of Cambridgeshire, UK, to design faithful reproductions of these most coveted, early version transformers. We at Warm Audio have not yet heard a modern day '73-style preamp sound as sweet and musical as does our WA273-EQ with these beautiful custom Transformers.

Hand Wired & Hand Assembled
Classic '73-style preamps were often hand-wired and so is the WA273-EQ! Guru's claim that a portion of the sought after classic British tone can be attributed to the hand-wired nature of the build. The WA273-EQ is hand-wired and hand assembled, including the pcb components that are all populated by hand.

Capacitors & Signal Path
An important part of these classic British circuits not often discussed is the different styles of capacitors and output transistor used. We found it important to maintain integrity to the original design by using tantalum and polystyrene capacitors in the signal path and an output transistor choice that is much smoother in the high gain settings than what is typically found in modern '73-style reproductions.

UK Blore Edwards Switch-Pots
A great sounding '73-style circuit should be just as reliable as it is great sounding. The complex dual concentric switch potentiometers in the EQ sections of the WA273-EQ are made in the UK by Blore Edwards who manufacture military spec switches and potentiometers. The use of Blore-Edwards components is no small inclusion for a '73-style preamp-eq in this price range.

Warm Audio WA273-EQ Microphone Preamp & EQ Specifications

  • Dual Channel, Class A, '73-style British Microphone Preamp with EQ
  • UK made Carnhill Transformers
  • UK made - Blore Edwards EQ dual-concentric switch potentiometers
  • Hand Wired, hand assembled
  • 80dB of gain - resistor stepped gain switch
  • Fully discrete
  • TONE button - Changes input transformer impedance for varying tone
  • Polarity switch
  • 48v phantom power
  • Inductor based 3 band EQ
  • Low Band Boost/Cut - 35, 60, 110, 220 Hz
  • Mid Band Boost/Cut - 360, 700, 1600, 3200, 4800, 7200 Hz
  • High Band Boost/Cut - 10, 12, 16 kHz
  • Additional high band frequency EQ points added (compared to vintage 1073)
  • 4 position inductor based hipass filter - 50, 80, 160, 300 Hz
  • XLR mic inputs (front & back)
  • Line level TRS input
  • TS Send/Receive insert jacks
  • XLR & TRS line level outputs
  • Direct In, instrument input
  • Output control
  • Led level indication
  • Freq response 20Hz - 20kHz +/-.5 dB
  • 19" rackable
  • Internal IEC 115v/230v power inlet

Warm Audio WA273-EQ Microphone Preamp & EQ Specifications Includes

  • Warm Audio WA273-EQ Microphone Preamp & EQ
  • Power Cable
  • Manufacturer Warranty

1 Review Hide Reviews Show Reviews

  • 5
    Warm Audio WA273 - EQ Microphone Preamp and EQ
    Robert Cline

    Product Review: Warm Audio WA273 - EQ Microphone Preamp and EQ This was my first purchase from FrontEnd Audio. I usually buy my product from the big candy audio company, but the price was good on a B-stock unit, so I pulled the trigger. Their shipping and communication are awesome, I will be back. The Warm Audio WA273 - EQ is a powerful and versatile microphone preamp and EQ that delivers exceptional sound quality and vintage-inspired tone. This product is a favorite among audio professionals and musicians alike, thanks to its impressive features and affordable price point. One of the standout features of the WA273 - EQ is its ability to faithfully recreate the classic sound of vintage preamps. It is meticulously designed to capture the warmth and character of legendary preamp models from the 70s, providing users with a rich and vibrant sonic palette. Whether you're recording vocals, guitars, or drums, this preamp delivers a smooth and musical sound that adds depth and dimension to your recordings. The EQ section of the WA273 - EQ is equally impressive. With its four-band equalizer, you have precise control over your audio, allowing you to shape and sculpt the frequencies to your liking. The EQ bands are well-designed and offer a wide range of options, making it easy to enhance certain elements of your recordings or correct any unwanted frequencies. Build quality is another area where the WA273 - EQ excels. The unit is housed in a sturdy and attractive chassis, ensuring durability and longevity. The controls and switches feel solid and reliable, giving you confidence in the product's overall construction. Additionally, the layout is intuitive and user-friendly, making it easy to dial in the desired settings quickly. In conclusion, the Warm Audio WA273 - EQ microphone preamp and EQ is a top-notch product that delivers exceptional sound quality, vintage-inspired tone, and versatile control options. Whether you're a professional audio engineer or a musician looking to enhance your recordings, this preamp and EQ is a solid choice. Its combination of affordability and performance makes it a standout in its category.