Hifonics HFi2500 Hfi Series D-Class Mono Amplifier 1 x 850 @ 4 OHMS, 1 x 1700 @ 2 OHMS, 1 x 2500 @ 1 OHM 4/2/1 Ohm Stable 2500 Watts Bass EQ with 45 Hz Bass Boost Bass Remote Included Illuminated Logo