Item #: WAU WA273EQ LIST

Warm Audio WA273 1073 Style Two Channel Microphone Preamp And EQ

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Product Description

There is no recording, mixing or engineering task the WA273-EQ can’t handle. If there’s one preamp-EQ that professional engineers would unanimously agree has defined the tone of pop/rock records for the last 50+ years, it would most definitely be the venerable 1073. The 1073 has been massively used in recording and live applications for decades and is still considered to be the “Holy Grail” of preamps today. The Warm Audio WA273-EQ dual channel re-creates this classic British preamp with EQ that each pay careful and humble homage to the original circuit.

Warm Audio WA273-EQ 1073 Style Microphone Preamp And EQ Features

  • Dual Channel, Class A, 1073-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
  • Additional high band frequency EQ points added (compared to vintage 1073)
  • Led Level Indication
  • 19" Rackable
  • Internal IEC 115v/230v Power Inlet 
When Warm Audio decided to release the WA73 Family it was imperative to them that the products pay respectful homage to the sacred British console history in both design and performance. The tone and sweet character that the vintage units impart is so unique and familiar, that Warm Audio had only the pure desire to release truly sonic accurate replicas. After years of R&D, careful reverse-engineering, and countless hours of auditioning, the WA73 Family has been born!

The WA73 Family of preamps are “Desert Island” boutique preamps but can also be classified as studio and live work-horses. The classic 1073 is known as a versatile tool that works with all kinds of microphones from Condenser, to Dynamic, to Ribbon. The WA73 Family 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, fully discrete Carnhill Transformer balanced signal path, and versatile 3 band inductor EQ.

Hand Wired, Hand Assembled:
The classic 1073 was hand-wired and so is the WA73 Family! Guru’s claim that a portion of the 1073’s classic tone can be attributed to the hand-wired nature of the build. The entirety of the WA73 Family of preamps is authentically hand-wired and hand assembled, including the PCB components that are all populated by hand.

UK Custom Carnhill Transformers:
1073 enthusiasts unequivocally get excited about the component history in these classic circuits. The signal transformers are a common topic of conversation. The classic vintage units used various versions of transformers throughout the years, and the most coveted were the very first versions made by Marinair Radar. Marinair Radar Transformers are regarded as the most desirable 1073 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 replicas of these most coveted, early version transformers. The entire WA73 Family proudly utilizes these fantastic Carnhill Transformers. We at Warm Audio have not yet heard a modern day 1073-style preamp sound as close to the early vintage 1073 design as do our WA73 Family units with these beautiful custom Transformers.

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 1073-style replicas.

UK Blore Edwards Switch-Pots:
A great sounding 1073-style circuit should be just as reliable as it is great sounding. The complex dual concentric switch potentiometers in the EQ section of the WA73-EQ.

warning WARNING: Cancer and Reproductive Harm -

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Helpful Info about the Manufacturer
Phone:  512-348-6585 Warranty:  1 Year

Product Specifications

Product Specifications
Warm Audio WA273-EQ 1073 Style Preamp And EQ Specifications
  • EQ: Inductor based 3 band
    • 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
  • Frequency Response: 20Hz - 20kHz +/-.5 dB
  • Controls: TONE Button, Polarity Switch, 48v Phantom Power, Ground Lift Switch, Output Control
  • Hipass Filter: 4 Position Inductor Based (50, 80, 160, 300 Hz)
  • Connections:
    • XLR Mic Input
    • Line Level TRS Input
    • TS Send/Receive Insert Jacks
    • XLR & TRS Line Level Outputs
    • Direct In, Instrument Input

Customer Reviews

Review: Czar Gregory Submitted: 2/23/2019

Product Rating5 out of 5 stars.

verified buyer


A affordable 1073.
Product Rating

Product Review

I read all the reviews watched and all the videos. No one had anything bad to say about this preamp. For good reason. It has a beautiful analog sound. A very rich and warm tone. I have a couple plug-in versions of 1073’s but having a hardware version has change the way I do things in my studio. I use it as an affect send in my board to warm up vocals, add a little distortion to guitars, or to dial in a sound for a kick or snare. It’s very versatile with the buttons on the front I can change how I use it. With the instrument button I can plug right into the front of the unit. This has become my go to method for recording base. If you’re looking for the 1073 sound with a built-in EQ you need to look no further than this. I’m very happy with this preamp.

Review: Eugene Morgan Submitted: 10/4/2018

Product Rating5 out of 5 stars.

verified buyer


Wow, Warm does it again!!!!!

Product Review

I cant speak on the real neve1073 as most of us can't, but wow!!! Without trying to compare the two, this preamp is "THE REAL DEAL" all on its on! Very clean and waaaarrrmmm!! When EQ is engaged on vocals, wow, this thing is like butter!! Seriously, what are you waiting for? Are you waiting for it to get warm? Well look no further lady's and gent's, the WA273EQ is the pre you've waiting for! Worth every penny, and could easily sell for $2500 or more! Thanks again Warm Audio for an outstanding product!

Review: Teriano Submitted: 9/6/2018

Product Rating5 out of 5 stars.

verified buyer


Better then Heritage

Product Review

This thing is built to last.. Knobs have a strong feel to them and the sound and clarity it brings to my mixes is awesome.

Review: Jeff Submitted: 7/23/2018

Product Rating5 out of 5 stars.

verified buyer


Great piece of great, one complaint...

Product Review

Having owned a BAE 1073 dual-channel preamp prior to buying this, my expectations were fairly high. I sold the BAE because I wanted the EQ section that this unit offers, without spending $5000 or more. I love the sound of this unit! It has done wonders for my guitar tone going in, to the point where I use very little EQ in the box now. Great on any sound source! Now....for my complaint. I don't know what Warm Audio was thinking when they used the 1/4-inch jacks that are in the back of this unit. Fortunately, I use a patch bay, so it is not a big deal as my snakes remain plugged in. If you are in a small project studio where you may be taking the cables in and out of these jacks with any frequency, I would be nervous. I thought I was going to push them through the back of the unit. They don't have retaining nuts on the outside. It is like they are attached to a circuit board with nothing else to retain them. It is a poor design, and should be revised.


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