Links for "Sonic X70000" often lead to third-party file-sharing sites like MediaFire or suspicious YouTube descriptions. These are common vectors for malware.
Locate the downloaded file (usually SONIC_X70000_Setup_v4.2.exe or .dmg ).
Without the official management application, you cannot adjust the crossover frequencies (HPF/LPF), time alignment, or 31-band equalizer. In short, the device will work as a basic line converter, but you cannot tune it without the software.