Warm Audio WA273-EQ Dual-Channel Mic Preamp and Equalizer

Warm Audio WA273-EQ Dual-Channel Mic Preamp and Equalizer

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SKU: WAWA273EQ Category:
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Warm Audio WA273-EQ dual-channel microphone preamp and equalizer is designed to provide up to 80 dB of gain and 3-band EQ for engineers, producers, musicians, and vocalists in mobile-recording rigs and home, project, and commercial studios. It features custom Carnhill transformers and is wired and assembled by hand to deliver the sound and functionality of classic British ’73-style preamps.

Its inputs include balanced XLR and 1/4″ TRS jacks and two front-panel 1/4″ TS instrument inputs. Input impedance, polarity, ground lift, and phantom power are switchable. Connect an outboard compressor or equalizer via the 1/4″ TS insert send and return jacks. Balanced XLR and 1/4″ outputs are fed by output level controls and allow compatibility with most audio interfaces and mixing consoles. The selectable high-pass filter can be set to 50 Hz, 80 Hz, 160 Hz, or 300 Hz for management of unruly bass frequencies.


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

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

19″ rackmountable.

Internal IEC 115v/230v power inlet


Rack Height: 2 RU

Number of Channels: 2

2 x XLR 3-pin (balanced)
2 x 1/4″ TRS (balanced)
2 x 1/4″ TS (unbalanced)

2 x XLR 3-pin (balanced)
2 x 1/4″ TRS (balanced)

Phantom Power: 48 V

High-Pass Filter: Off, 50 Hz, 80 Hz, 160 Hz, or 300 Hz

Gain Range: Up to 80 dB

Frequency Response: 20 Hz to 20 kHz (±0.5 dB)

Equivalent Input Noise: -111 dBu (unweighted)

Power Requirement: 115/230 V, 50/60 Hz

Dimensions (WxDxH): 19.0 x 3.5 x 11.0″ / 48.3 x 8.9 x 27.9 cm

Weight: 16 lb / 7.3 kg

Weight 20 lbs