Model: vP-50AS/60AS/90AS/100AS/160AS/180AS/250AS/350AS/500AS/700AS
With USB interface, support U disk player; 
Built-in radio function, automatic station search, automatic storage units (VP-50AS, VP-90AS does not have this feature);
Built-in infrared receiver function, remote control (VP-50AS, VP-90AS does not have this feature); 
2LINE input, 3MIC input, 1LINE output; 
4 partitions switch selection button; 
Separate bass and treble adjustment, the volume adjusted independently for each input; 
Smart short circuit overheating protection.