ITEM NAME:2.1 Channel Subwoofer Preamp Board Low Pass Filter Pre-Amp Amplifier Board M2M1 2.1 Channel Subwoofer Preamp Board Low Pass Filter Pre-Amp Amplifier Board M2M1 Model Number:WM-019 Channels:3 (2.1) Size: approx.98*40mm Color: blue Material: metal Package Contents: 1 * 2.1 channel preamp board.Find many great new & used options and get the best deals for 2.1 Channel Subwoofer Preamp Board Low Pass Filter Pre-Amp Amplifier Board M2M1 at the best online prices at shop2india!