2.1 Channel Subwoofer Preamp Board DIY Kit Low Pass Filter Pre-AMP Amplifier Board NE5532 Low Pass Filter Bass Preamplif

Description:Item name: 2.0+0.1 Pre-AmplifierChip Model: NE5532 78M12Voltage input: DC12-30V AC9-20VStructure: Dual 5532 2.0 full frequency+0.1 bassFrequency: Full frequency 20-20KHz Bass 20-200HzCharacteristic: 2.0+0.1 Colume controllable, phase adjustableDimension: about 98*40*23mmNote:it cant be connected to a speaker, it needs to be connected to the amplifier to drive the subwoofer speaker.Package included:1 x 2.1 Channel Subwoofer Preamp Board DIY Kit