Description
The Warm Audio WA-2MPX is an authentic recreation of one of the most revered tape-era tube microphone preamps, inspired by the classic 351-style preamplifiers found in early American tape machines that helped shape the sound of rock ‘n’ roll and radio-ready recordings. Designed to capture the unmistakable warmth and musical character of vintage studio signal chains, the WA-2MPX delivers rich harmonic depth and classic analog coloration that defined legendary recordings from the golden age of tape. It brings timeless tube tone to modern studios while preserving the sonic personality engineers and producers continue to pursue today.
Powered by an impressive 300V circuit and offering up to 90dB of tube gain, the WA-2MPX provides exceptional headroom, clean amplification, and the ability to drive tubes into natural saturation for expressive analog character. Selectable all-analog tape saturation recreates the compression, harmonic distortion, and non-linear frequency response associated with 15 IPS reel-to-reel machines, allowing users to dial in subtle warmth or full vintage coloration. Integrated 80Hz high-pass and 2kHz low-pass filters further refine tone, helping remove unwanted low-frequency rumble while shaping focused midrange presence and punch.
Hand-assembled with premium components, the WA-2MPX features three high-quality tubes per channel paired with custom-wound, true-to-spec USA CineMag transformers for authentic vintage performance and reliability. Every unit is carefully hand-inspected and tested at Warm Audio’s headquarters in Austin, Texas, ensuring consistent quality and musical excellence. Combining faithful vintage design with modern dependability, the WA-2MPX is an ideal choice for engineers seeking classic tube warmth, tape-style saturation, and unmistakable analog depth in vocals, instruments, and full mixes.
Product Specifications:
Construction: Fully Discrete, Hand-Built
Tubes Per Channel: 3 (2×12AX7, 1×12AU7)
Gain Per Channel: 90 dB Analog Tube Gain
High-Gain Mode: +20 dB (70 dB → 90 dB)
Tape Saturation: Selectable (Adds Harmonic Distortion & Natural Compression)
Transformers: Custom-Wound Large-Core CineMag USA
Mic Input Impedance: 600Ω Transformer (6000Ω Rated)
Mic Input with Tone Engaged: 150Ω Transformer (1500Ω Rated)
Output Attenuator: 600Ω
Phantom Power: 48V
Polarity Switch: Yes
Tone Control: Classic Warm Audio (Alters Input Transformer Impedance)
High-Pass Filter: 80 Hz
Low-Pass Filter: 2 kHz
Inputs: XLR Mic, TS Instrument, TRS Line
Outputs: XLR / TRS Line Level
VU Meter: Level Indication
Frequency Response: 20 Hz – 20 kHz
Chassis: Aluminum Faceplate, Steel Body
Knobs: Vintage Bakelite-Style
Power Supply: Internal IEC 115V/230V
Product Weight: 12.3 lbs.
Product Dimensions (L x W x H): 19 x 8.75 x 3.5 in
Shipping Weight: 15.3 lbs.
Shipping Dimensions (L x W x H): 24.5 x 13 x 5 in
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