I use the Toneboosters parametric EQ, which I had to purchase with a small fee. For each of the 6 available parametric EQ filters, the system enables the user to select one of a long list of different filter types, including peak type, low frequency shelf and high frequency shelf. If a peak type filter is required, the user can choose the type, between Digital, Analog and another one, a more sophisticated recently developed digital filter. All the parameters (including Q) of the selected filter are displayed at the bottom of the EQ plot display and can be set by the user.
The user can also set the overall gain relative to the default normal of the EQ. The Tonebooster parametric EQ is selected on the page gotten to by selecting the EQ symbol near the right upper corner of the UAPP display. You can select either the built-in non-parametric EQ, or the Toneboosters or none.