The Warm Audio WA273-EQ Dual-Channel Microphone Preamplifier and Equalizer is a dual-channel, Class-A microphone preamp and equalizer 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.

The inductor-based EQ boasts selectable frequencies and Blore Edwards dual-concentric potentiometers. The WA273-EQ is rack-mountable and occupies 2 RU.

FEATURES

• Handwired, hand-assembled 1073-style preamplifier/EQ
• 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
• 48V phantom power
• 4-position inductor-based highpass filters, selectable for Off, 50, 80, 160, or 300Hz
• Inductor-based 3-band equalization per-channel
• Low-band boost/cut at 35, 60, 110, or 220Hz
• Mid-band boost/cut at 360, 700, 1600, 3200, 4800, or 7200Hz
• High-band boost/cut at 10, 12, or 16kHz
• Additional high-band frequency EQ points added (compared to vintage 1073)
• 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