AB Assist 2 Upgrade from AB Assist 1

AB Assist 2 is a utility plugin from NUGEN Audio designed for fast, objective comparison of multiple audio sources. It lets you switch between different takes, mix revisions, masters, or plugin options without relying on memory or bias. A blind test mode randomizes channel labels so you can judge purely by ear, while auto-level-matching aligns short-term loudness (LUFS) to keep comparisons fair. Version 2 expands to four sources, supports surround mixes in any channel count, and includes a mono-check for fold-down reference. Multiple instances communicate directly, so you can set up comparisons across tracks without external routing. Smooth fades between sources make transitions seamless. This tool suits mixing and mastering engineers, producers, and anyone who needs to make confident decisions quickly. It works with FL Studio, Ableton, and Logic on Windows, fitting naturally into an existing workflow as an essential reference tool.