The Boschmann EQX-35PRO, manufactured by BM Audio Laboratories, Inc., is a 4-band professional parametric graphic equalizer for automotive audio. It features a 1/2 DIN chassis measuring 26mm x 176mm x 118mm with a high-density metal case from the Gunmetal Line, finished in a germanium alloy and protected by a transparent Plexiglass cover. This device operates across a frequency range from 10 Hz to 150 kHz with a signal-to-noise ratio of 110 dB and a total harmonic distortion of 0.005% at 1 kHz. Its four parametric bands are set at 50 Hz, 220 Hz, 1 kHz, and 16 kHz, offering a boost or cut range of 18 dB. The unit includes a dedicated subwoofer output with a low pass frequency adjustable between 60 and 260 Hz. It supports CD/Radio inputs from the front or rear and utilizes a fully isolated DC/DC power supply consuming 12W. Technical capabilities include a maximum output level of 9V, input sensitivity of 150 mV, and stereo channel separation of 82dB at 1 kHz. For customization, the equalizer provides adjustable gain, subwoofer level control, frequency sweep, and selectable red or green dual-color night lighting.