SOC1900S is a new generation recording system developed by Shenou, which adopts internationally leading voice compression technology and supports 2, 4, and 10 times compression. Users can expand up to 64 recording channels, and the hard drive is removable. Widely applicable to government, enterprise and public office work; Legal and news media telephone interviews, evidence collection recordings; Public security, procuratorial, judicial, and armed police forces; Financial securities, trade and commerce; Complaints, reports, service industry recordings, etc. Product capacity: 8 channels, 16 channels, 24 channels, 32 channels, 40 channels, 48 channels, 56 channels, 64 channels, built-in hard drive: 1T-4T.