Heres my setup... Headunit:http://www.crutchfield.com/p_500INAW910/Alpine-INA-W910.html?tp=20212 Subwoofer:http://www.jlaudio.com/12w0v3-4-car-audio-w0v3-subwoofer-drivers-92166 Amp:Brand: MTX Model: Road Thunder RT2100X Product Information: 2 Channel, Bridgeable Mosfet Power Amplifier MPN: RT2100X Amplifier Type: Class A/B 2/1Channel Car Audio Amplifier Bridgable: Yes (4ohm)200 x 1/280 W x 1@14.4 V.D.C. RMS Power at 4 Ohms: 50 x 2 RMS Power at 2 Ohms: 100 x 2 Frequency Response: 20-20,000 Hz Signal to Noise Ratio: 110dB THD at Rated RMS Power: 0.08 Bass Boost Frequency: 40Hz(0-18dB) Low - Pass Frequency: 20-200Hz High - Pass Frequency: 120-20,000Hz Input Voltage: 12-14.4V.D.C. MOSFET Circuitry: YES Width: 9" Depth: 7" Height: 2" I know the amp is old because its not even listed on MTX's website anymore and theres close to nothing about it online. Its all installed in my 2002 toyota sequoia with the stock JBL premium sound package. Im trying to get the amps gain/bass controls tuned correctly with the head unit so I can get the most out of the sub. The sub feels underpowered but I was reassured that the amp should be able to power the sub. Any help or comments are welcome. Thanks in advance!