Boost bass or treble frequencies, cut bass or treble frequencies, convert to lossless audio formats FLAC, Wav or Mp3. Key features Strengthen (boost) or weaken (cut) the energy of specific frequency bands. Boost bass or treble. Cut bass or treble. Boost volume. Build in presets EQ. Convert to lossless audio formats FLAC, Wav or Mp3(lossy). Batch converting. Drag and drop. Supported input file types: mp3 flac wav ogg wma ape wv aac m4a aiff.