Warm Audio WA273 2-channel microphone preamp

equipped with tube	no
Energy source	AC
Phase reverse	yes
built-in equaliser	no
built-in limiter	no
built-in compressor	no
19-inch rack size	1U

Warm Audio WA273 2-channel microphone preamp
Product no: 9000-0041-4952 Bax Music Warranty: This product comes with a 5 year warranty when you register it with warmaudio.com/product-registration. If the product is not registered it has a 3-year warranty.

General

The award-winning British 1073 preamp left its distinctive mark on the sound of countless albums over the last 50+ years. With the WA273, Warm Audio offers a respectful, heartfelt tribute to this classic. The original hardware has been modelled and emulated right down to the component level. This means that every feature of the original 1073 has been faithfully reproduced. When you push it, this unit will respond with warm saturation and harmonic distortion, without having to use converters while the output control can be used to maintain balance. The WA273 has been hand-built down to the very last component and was manufactured in close collaboration with British company, Carnhill Transformers, evidenced by the included 'custom made' transformer installed in the guts of the WA273, directly reflecting the spirit of the 1073.

Specifications

Product features

Sustainable product	not specified
Number of channels	2
Phantom power	yes
Digital output	no
Analogue audio output type	balanced line out (TRS jack), balanced line out (XLR)
Analogue audio input type	balanced line in (TRS jack), microphone input (XLR), Hi-Z instrument input (TS jack)
Headphone output	no
Connection sockets	2x TRS send/return (balanced)
Equipped with tube	no
Energy source	AC
Phase reverse	yes
Built-in equaliser	no
Built-in limiter	no
Built-in compressor	no
19-inch rack size	1U

Weight and dimensions including packaging

Weight (incl. packaging)	6,5 kg
Dimensions (incl. packaging)	62,0 x 39,0 x 10,0 cm

Product specifications

Microphone Preamp
Incredibly faithful replica of the renowned British 1073 Preamp
80dB gain
Polarity switch
48V phantom power
High pass-filter with 4 positions
Connectors:
- XLR microphone input
- TS jack Hi-Z instrument input
- TRS line in
- XLR and TRS line out
- TS jack send/return
LED indicator
Dimensions: 63.5 x 38.1 x 10.16 cm
Weight: 7 kg
Included: power cable

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Lionel July 13, 2025

Wrote the following about Warm Audio WA273 2-channel microphone preamp

Ik heb hem pas een week geleden ontvangen en ben hem nog aan het leren gebruiken.
Tot nu toe ben ik heel tevreden. Goede klank en past prima bij mijn werk-flow: Namelijk 2 kanalen die ik tot mijn beschikking moet hebben voor twee microfoons en twee line-in instrumenten paraat voor gebruik (een elektrische en een basgitaar). Prima pre-ampje!

speakerfood July 13, 2023

Wrote the following about Warm Audio WA273 2-channel microphone preamp

Heerlijke preamp, even opletten dat er een standje 'uit' op de gain knop zit, tussen 50 en 55 dB. Beetje vreemde ontwerp keuze. Gebruikt voor voice over opname met een Neumann TLM 103, mooi warm en vol geluid.

Daniel G. January 3, 2021

Wrote the following about Warm Audio WA273 2-channel microphone preamp

Excellent préampli stéréo tout à fait conforme aux prétentions annoncées (voir mieux connaissant très bien la référence originale). Beaucoup de "headroom", sélecteur d'impédance très efficace, des tas de fonctionnalités, je ne crois qu'on puisse trouver beaucoup mieux pour le prix actuellement. Une petite merveille !

jd November 11, 2018

Wrote the following about Warm Audio WA273 2-channel microphone preamp

Préampli vraiment pas très loin du Neve dont il s'inspire.C'est lourd, bien construit et surtout musical, à utiliser sur tout type de prise de son, le filtre passe haut est le bien venu, le bouton Tone aussi (changement d'impédance). A la sortie de votre carte son, colore bien le mix, pour un résultat plaisant.

Maintenant, ça n'est pas donné, mais le prix est justifié par la qualité des composants. Pour un musicien amateur comme moi, c'est presque trop beau de disposer d'un tel materiel à la maison.