With this application you can make EndFire subwoofer arrangements. The Cardioid arrangements, in Stack, Digital Arc, Line Sub, Cardioid Line Sub, Physical Arc, R90/R45, Frontback and Frontfills adjustment, "only in the Pro version." A good number of calculators are available: Air Absorption, Time/Distance, Wavelength, Time/Angle, SPL Sum, OHM's Law, Q/W Factor and V-dBu-dBV-W-dBW-dBm. In the UTILITIES section the pins and connection types of XLR and Jack, DMX and MIDI connectors. A relationship between notes and frequencies, Fletcher-Munson curves and the correlation between different measurement references. Along with this, another audio section with 30 files of individual instrument sounds, complete songs and the main frequencies for the control and balance of equipment. I include a PREFERENCES section, where you can choose between 5 languages, 5 types of buttons and different background colors for the application.