REW is free room acoustics analysis software for measuring and analysing room and loudspeaker responses.įoobar2000 is an advanced freeware audio player with EQ. QRange 12 band EQ, each band can be used as peak, shelf and cut filter. Mega Switcher is an Alternative GUI for Equalizer APO Peace equalizer is a Windows PC interface for Equalizer APO. PC Equalizer is a Graphical User Interface for 'Equalizer APO' which is a parametric / graphic equalizer. This will be organized as results come made a guide for PEQ filter data input and operation.Įqualizer APO is a parametric / graphic equalizer for Windows.