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

• Dual-channel tube design: Each channel uses a pair of 12AX7 tubes and a 12AU7 tube for harmonic depth, saturation and classic analog feel.
• Up to 90 dB of gain: High-gain mode adds an extra 20 dB, making it suitable for low-output ribbon and dynamic microphones.
• Selectable tape saturation circuit: Adds musical harmonics and gentle compression reminiscent of vintage tape machines.
• Mic impedance switch: Changes between 600 Ω and 150 Ω to fine-tune presence and response with different microphones.
• High-pass and low-pass filters: 80 Hz high-pass removes rumble, while a 2 kHz low-pass softens harshness when needed.
• 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

• Channels: 2
• Gain range: 0–70 dB (up to 90 dB with high-gain engaged)
• Frequency response: 20 Hz–20 kHz
• Inputs: Mic XLR, Line TRS, Instrument TS (per channel)
• Filters: 80 Hz high-pass, 2 kHz low-pass
• 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.