Warm Audio WA12 MKII Microphone Preamp – Black

Handle all of your single-channel audio recording needs with the black Warm Audio WA12 MkII, a preampliflier for professionals on a budget. This is a discrete, dual-transformer, high voltage mic pre that offers high headroom, a low noise floor, and sonics designed to impart a larger-than-life quality.

Based around an X731 opamp derived from the Melcor 1731, the pre offers a sound that can be warm or clean, saturated or transparent, depending on how hard you drive it. Drive it softly or hard, it won’t change the essential sonorous quality of the unit.

It’s also customizable for the DIY crowd: Because the unit was designed around the X731 opamp, the pre can accept any discrete opamp on the market that conforms to the 16V, 2520 pinout standard. In addition to the opamps, the WA12 MkII employs CineMag USA transformers, as well as other components that allow it to compete with units far more costly.

This preamp offers XLR and 1/4″ connections for mic level, line level, or Hi-Z instruments. You’ll also have your choice of XLR or 1/4″ TRS outputs. A pad switch is on hand, as are a polarity switch and a button to supply 48V phantom power to condenser mics. A tone control lets you change the impedance from 600 to 150 ohms, which will have an effect on the sound.

Key Features at a Glance
Utilizes premium grade input and output USA CineMag transformers
71 dB of gain, fully discrete signal path
Can be replaced with other 6-pin 2520-foot print opamps for varying tone/flavor
Tone button switches the input impedance from 600 ohms to 150 ohms, changing the tone of both the microphone and Hi-Z inputs
2-megohm Hi-Z input on front panel, sends instrument signal through entire circuit including both Cinemag transformers and the discrete opamp
Suitable for guitars, bass, keyboards, and other instruments that have a 1/4″ output jack
Output attenuation control (after the CineMag output transformer) allows for driving the preamp and transformers into saturation
LED meter gain indication
External power plug

Warm Audio WA12 MKII Specs
Number of Channels 1
Inputs 1 x XLR
1 x 1/4″
Output 1 x XLR
1 x 1/4″ TRS
Phantom Power 48 V, Switchable
Gain Range 71 dB
Pad -20 dB, Selectable
Input Impedance Hi-Z: 2 Megohms
Load Impedance Switchable between 150 and 600 Ohms
Dimensions Not Specified by Manufacturer
Weight Not Specified by Manufacturer
Packaging Info
Package Weight 6.66 lb
Box Dimensions (LxWxH) 14.2 x 12.7 x 3.8″
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Brand

Warm Audio