HOFA 4U+ BlindTest provides a means by which various plugins or signal paths may be compared unhindered by bias based on, say, a plugin’s name or GUI. 4U+ BlindTest is instantiated at the end of every signal path to be compared. The interface hides the identities of the test subjects and you can shuffle their positions in the interface for utter anonymity. This obscurity enables you to choose the best based on your ears, rather than your emotions. It’s a great idea and one that will shake up your preconceptions.