1-channel microphone and instrument preamplifier. Selectable tape saturation adds harmonic distortion and natural compression. Built with 3 tubes per channel for an analog sound. 90 dB of analog tube gain. CineMag USA transformers. 2 x 12AX7 and 1 x 12AU7 vacuum tubes. Tone circuit changes the impedance of the input transformer. The Warm Audio WA-MPX is not just a tube preamplifier, but an authentic reproduction of the most cherished tube preamplifier from the band era. With its fully discrete, handcrafted design and 3 tubes per channel, it delivers ultimate analog sound. Choose the tape saturation to add harmonic distortion and natural compression. With 90 dB of analog tube gain per channel, specially wound CineMag USA transformers, and high-quality 12AX7 and 12AU7 vacuum tubes, the WA-MPX provides unparalleled sound quality. Additionally, it features 48V phantom power, a polarity switch, and a classic Warm Audio tone control that changes the impedance of the input transformer to add extra analog color. Indulge in the legendary sound of the band era with the Warm Audio WA-MPX.