Hifonics HFi100.4 HFi Series A/B Stereo Amplifier 4 x 100 @ 4 OHMS, 4 x 200 @ 2 OHMS, 2 x 400 @ 4 OHMS 4/2 Ohm Stable 800 Watts Power 4/2 Channel Perfect Complement to HF D Class Models Illuminated Logo