The Warm Audio WA-MPX

The Warm Audio WA-MPX is a single-channel tube microphone preamp that authentically recreates the legendary 351-style tube preamplifier found in iconic American tape machines. Featuring hand-wired construction with three premium tubes per channel and custom USA CineMag transformers, it delivers 3V of raw power and 9dB of tube gain for clean amplification and natural saturation. The selectable all-analog tape saturation engine provides compression, saturation, and non-linear frequency response mimicking vintage reel-to-reel tape at 15IPS. Dual filters—8Hz high-pass and 2kHz low-pass—allow precise tone shaping. Ideal for recording vocals, instruments, and dialogue, the WA-MPX brings warmth, richness, and professional-grade analog tone to any studio setup.

• Authentic Reproduction Of The Most Revered Tape-Era Tube Mic Preamp: The WA-MPX is based on the 351-style tube preamplifier found in American tape machines that pioneered the birth of rock ‘n’ roll & radio-ready hits.
• Power & Versatility For A Wider Range Of Analog Tone: Delivering an impressive 3v of raw power & 9dB of tube gain, WA-MPX achieves clean gain & powerful volume, that pushes the tubes to saturate just like the most timeless analog gear.
• Premium Components & Handwired Construction For An Authentic Vintage Experience: Hand-assembled with three premium tubes per channel paired with custom-wound true-to-spec USA CineMag transformers, the WA-MPX authentically reproduces all the analog tone of the original.
• Selectable, All-Analog Tape Saturation: WA-MPX uses discrete analog components that provide compression, saturation, and non-linear frequency response for authentic tape-era reel-to-reel sound at 15IPS.
• Hi-Pass (8Hz) & Low-Pass (2kHz) Filters to Refine Tone: The 2kHz low-pass filter allows you to further shape and focus your tone, dialing in ultimate midrange warmth & punch. The 8Hz hi-pass filter helps remove unwanted bass noise from unruly sources.
• Hand-Inspected & Tested at Warm Audio HQ in Austin, Texas: Carefully inspected at Warm Audio Headquarters in Austin, Texas by trained engineers & musicians with a passion for helping you sound your best.
• Classic Warm, Rich Sound Profile: Engineered to deliver warm, rich low and mid frequencies that add presence and character to vocals, instruments, and dialogue with authentic analog coloration.

• Authentic Reproduction Of The Most Revered Tape-Era Tube Mic Preamp: The WA-MPX is based on the 351-style tube preamplifier found in American tape machines that pioneered the birth of rock ‘n’ roll & radio-ready hits.
• Power & Versatility For A Wider Range Of Analog Tone: Delivering an impressive 300v of raw power & 90dB of tube gain, WA-MPX achieves clean gain & powerful volume, that pushes the tubes to saturate just like the most timeless analog gear.
• Premium Components & Handwired Construction For An Authentic Vintage Experience: Hand-assembled with three premium tubes per channel paired with custom-wound true-to-spec USA CineMag transformers, the WA-MPX authentically reproduces all the analog tone of the original.
• Selectable, All-Analog Tape Saturation: WA-MPX uses discrete analog components that provide compression, saturation, and non-linear frequency response for authentic tape-era reel-to-reel sound at 15IPS.
• Hi-Pass (80Hz) & Low-Pass (2kHz) Filters to Refine Tone: The 2kHz low-pass filter allows you to further shape and focus your tone, dialing in ultimate midrange warmth & punch. The 80Hz hi-pass filter helps remove unwanted bass noise from unruly sources.
• Hand-Inspected & Tested at Warm Audio HQ in Austin, Texas: Carefully inspected at Warm Audio Headquarters in Austin, Texas by trained engineers & musicians with a passion for helping you sound your best.