The following different audio units are available with the WU series:
- WU: AUDelay, a simple delay effect with feedback control
- WU: AUSampleDelay, a sample frame delay, which is very useful for doing manual latency compensation and out-of-phase corrections
- WU: AUReverb2, an algorithmic digital reverberation effect with a number of parameters
- WU: AUPeakLimiter, a brickwall limiter, useful for preventing signal bursing and saving speakers
- WU: AUDynamicsProcessor, delivering compressor, expander, limiter, gate in one multi- dynamics plugin
- WU: AUDistorion, a versatile multi algorithm signal distortion/modification effect
- WU: AUBandpassFilter, a basic digital filter model
- WU: AULowPassFilter, a basic digital filter model
- WU: AUHighPassFilte, a basic digital filter model
- WU: AULowShelfFilter, a basic digital filter model
- WU: AUHighShelfFilter, a basic digital filter model
- WU: AUParametricEQ, a single equalizer band with adjustable frequency
- WU: AUPitch, a pitch shifter up to +-24 semitones (2 octaves up and down)
- WU: AUNBandEQ, more than just a multiband EQ, it actually delivers a whole bunch of different filter algorithms per band
- WU: AUMIDISynthesizer, a multitimbre MIDI synthesizer based on soundfonts (*.dls, *.sf2 file format)
- WU: AUSampler, a full featured and powerful single channel sampler unit with its own file format