The application is designed for use with Rainbow's EL-PA200, EL-AP300D, SL-PA400, EL-P0455A, SL-P0855A, IRON-AP1200SE, SL PRO-P1250A. It features EQ adjustment, delay adjustment and allows to you adjust frequency, slope and type of high pass filter and low pass filter. Also, it can save 6 sound effects. It is the ultimate digital tool to optimize and shape the audio signal, helping to achieve the best sound possible in a car.