Warm Audio WA-2MPX Dual-Channel Tube Microphone Preamplifier
 
The WA-2MPX is an authentic recreation of the most revered tube microphone preamplifier that helped define the birth of rock ’n’ roll and countless radio-ready hits. During the golden age of tape recording, this style of vintage tube preamp became the defining sound behind legendary artists such as Elvis Presley, Kurt Cobain, Les Paul, and Bing Crosby — a tone that remains highly sought-after by top artists and producers today.
 
With premium components, a faithful circuit design, and adjustable tape saturation, the WA-2MPX delivers the authentic analog warmth and harmonic richness of the original, adding depth, color, and character to any signal.
 
Hand-assembled and equipped with three premium vacuum tubes per channel and custom-wound large-core CineMag USA transformers, the WA-2MPX authentically reproduces the full analog tone and dynamic response of the original.
 
Power and Versatility Across a Wide Range of Analog Sounds
 
Thanks to its high 300V tube voltage and 90 dB of tube gain per channel, the WA-2MPX provides ample headroom and an open, spacious tonal foundation. When the tubes are driven into saturation, they produce natural harmonic distortion and gentle compression. The built-in “Tape Sat” (tape saturation) circuit adds an extra layer of pure analog warmth and harmonic texture.
The WA-2MPX and its single-channel counterpart, the WA-MPX, combine vintage sound with modern connectivity, making them ideal for use in any studio or live setup.
 
Features
 
Authentic recreation of the most celebrated tube preamplifier of the tape era
Fully discrete, hand-built design with 3 tubes per channel for ultimate analog tone
Selectable tape saturation adds harmonic distortion and natural compression
90 dB of analog tube gain per channel
Custom-wound large-core CineMag USA transformers
Microphone input: 600 Ohm transformer (6000 Ohm nominal load)
Microphone input with “Tone” circuit engaged: 150 Ohm transformer (1500 Ohm nominal load)
Premium vacuum tubes: 2× 12AX7 and 1× 12AU7 per channel
600 Ohm output level control
“High Gain” switch engages the third tube for an additional 20 dB of gain (from 70 dB to 90 dB)
Clean amplification for low-output microphones and quiet sources
48V phantom power and polarity reverse switch
“Tone” circuit changes input transformer impedance and adds additional analog coloration
80 Hz high-pass filter to control low-end rumble
2 kHz low-pass filter to focus midrange warmth and punch
Tape Saturation circuit adds harmonic distortion and natural analog compression
Inputs: 2× XLR Mic, TS Instrument, and TRS Line
Outputs: 2× XLR / TRS Line-level
VU meters for level monitoring
Frequency response: 20 Hz – 20 kHz
Aluminum front panel, steel chassis, and vintage Bakelite-style knobs
Internal IEC 115V/230V power supply
Weight: 5.1 kg