Warm Audio WA-2MPX – Dual-Channel Tube Mic / Line / Instrument Preamp
The Warm Audio WA-2MPX is a dual-channel tube preamp inspired by legendary 351-style tape machine circuits. With rich analog character, up to 90 dB of gain and built-in tone shaping options, it delivers vintage warmth and modern versatility for vocal tracking, instruments, and full studio workflows at Soundium.
Key Features
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Dual-channel tube design: Each channel uses a pair of 12AX7 tubes and a 12AU7 tube for harmonic depth, saturation and classic analog feel.
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Up to 90 dB of gain: High-gain mode adds an extra 20 dB, making it suitable for low-output ribbon and dynamic microphones.
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Selectable tape saturation circuit: Adds musical harmonics and gentle compression reminiscent of vintage tape machines.
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Mic impedance switch: Changes between 600 Ω and 150 Ω to fine-tune presence and response with different microphones.
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High-pass and low-pass filters: 80 Hz high-pass removes rumble, while a 2 kHz low-pass softens harshness when needed.
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Versatile I/O: Each channel supports mic XLR, line-level TRS and front-panel instrument inputs for flexible routing.
Customer Benefits
The WA-2MPX gives creators access to premium tube tone with extensive control options. From vocals to guitars, drum overheads to stereo instrument setups, its wide gain range, built-in filters and saturation circuit make it a powerful front-end for both recording and hybrid studio environments. With transformers and circuitry inspired by vintage tape-era hardware, it adds warmth and depth to any signal path at Soundium.
Quick Specs
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Channels: 2
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Gain range: 0–70 dB (up to 90 dB with high-gain engaged)
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Frequency response: 20 Hz–20 kHz
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Inputs: Mic XLR, Line TRS, Instrument TS (per channel)
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Filters: 80 Hz high-pass, 2 kHz low-pass
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Rack size: 48.3 cm (19″) width, 2U height
What’s in the Box
- Warm Audio WA-2MPX preamp
- IEC power cable
- User documentation
Use Cases / Ideal For
Perfect for lead vocals, ribbon microphones, guitar amps, drums, acoustic instruments, keyboards and stereo recording setups. Also excellent for adding analog color to line-level sources or mixes.
Compatibility
Fits standard 19″ 2U racks. Works with microphones, line-level gear and instruments. Requires standard IEC power and connects easily to audio interfaces, consoles and outboard processors.
Pros & Cons
✅ Pros:
- Authentic tube character with modern control options
- High gain for ribbons and dynamic microphones
- Tape saturation and filtering built in for tone shaping
⚠️ Cons:
- Tubes require warm-up time and occasional maintenance
- Large 2U design takes more rack space
The Warm Audio WA-2MPX delivers classic tape-era warmth, modern flexibility and a premium dual-channel feature set. For studios seeking expressive tube tone and high-end analog performance, it’s a compelling addition at Soundium.
