4U+ BlindTest

HOFA 4U+ BlindTest is a blind comparison utility that helps you judge audio by ear rather than by plugin names or appearances. Insert it last on each track you want to compare, then use Shuffle to hide track identities and randomize their order. Only the selected track plays, letting you focus on differences between processing chains, plugin settings, or equipment recordings. Peak meters and individual gain controls help reduce volume bias, while ratings from 0 to 5 and written comments capture your impressions. Repeat the test and review your notes before revealing the track names. A resizable interface can cover distracting DAW windows, and an INACTIVE section keeps unused tracks out of the comparison. With support for up to three tracks, it suits home producers and mix engineers who want a more considered way to choose their preferred sound.