Check the listing for details. Mackie ProFX12v3+ 12-channel Mixer. Condition: Very Good - Refurbished. Listed at 395.99 USD. A Feature-rich Analog Mixer with USB and Effects The Mackie ProFX12v3+ is an old-school 12-channel analog mixer with truckloads of modern digital functionality. It all starts with a solid analog front end, which includes seven of Mackie's acclaimed Onyx mic preamps, a 3-band EQ on all channels, and one-knob compression on channels 1–4. The ProFX12v3+'s high-resolution GigFX+ effects engine enables you to polish your tracks to a pro-level sheen. You also get a built-in USB-C audio interface, plus three recording modes for the utmost flexibility. Bidirectional Bluetooth functionality makes integrating calls and streaming audio a breeze. Add to that effortless latency-free monitoring, and you have a powerful mixing solution that fits seamlessly into a wide range of modern workflows.