Timpano TPT500.4 Compact 4 Channel Car Audio Amplifier – 4 x 125 Watts at 2 Ohms – Mini Stereo 12 volts Full Range Class D Amp, Bridgeable Amplifier 4 Channel : Amazon.in: Electronics
THUNDER Series 400-Watt RMS 4-Channel Class AB Amplifier | MTX - Serious About Sound®
12V 400 Watt 2.1Channel Car Audio Stereo Amplifier Speaker Power Class A / B Amp | eBay