The output of the pulse and sawtooth waves can be directed through a saw/pulse mixer followed by a high-pass filter with four selectable settings. Additionally, the pulse output can be directed through one of three resonator banks. These banks (with 2, 3, and 5 settings respectively) can tailor the filtering of the waveform to suit specific voices (such as cello, violin, flute, or oboe). All of these settings are determined by the factory programmed ROMs; they are not accessible by the user.