The Mackie ProFX12v3 is a compact, feature-rich audio mixer designed for live sound, recording, and streaming applications, combining professional analog mixing with built-in digital effects and multi-channel USB connectivity. This 12-channel mixer is built around Mackie's renowned Onyx microphone preamplifiers, which deliver high headroom and transparent sound quality for microphones, instruments, and line-level sources. Its flexible channel strip design includes 3-band EQ on all mono channels, with sweepable mid-frequency control on the first four channels for precise tonal shaping. The mixer incorporates a professional-grade 24-bit multi-effects processor with 16 customizable presets, providing essential reverbs, delays, and modulation effects that can be applied globally or to individual channels via the aux send system, enhancing vocals and instruments with studio-quality processing.

A standout feature of the ProFX12v3 is its integrated USB audio interface, which allows the mixer to function as a 12x2 recording interface for direct connection to a computer. This enables users to record a stereo mix of all channels or stream audio directly to podcasting or live streaming software with low latency. Additionally, the mixer includes a dedicated USB/2-Track input for playing back audio from a computer, which can be mixed into the main output independently. The mixer's 4-bus architecture includes a dedicated stereo main mix, a separate monitor mix, and two auxiliary sends, providing ample routing flexibility for stage monitors, external effects, or recording feeds. Dedicated one-knob compressors on the first two channels help manage dynamic sources like vocals or bass quickly and effectively.

Housed in a rugged steel chassis, the ProFX12v3 is built to withstand the rigors of mobile use while providing an intuitive, user-friendly control surface. It features balanced XLR and 1/4-inch main outputs, separate monitor outputs, a headphone output with cue mix control, and a comprehensive set of input options including XLR, TRS, and RCA connections. The mixer's straightforward layout, combined with its powerful feature set, makes it an ideal all-in-one solution for musicians, DJs, podcasters, and houses of worship who require reliable, high-quality sound reinforcement with the added benefits of digital effects and seamless computer integration.