This Package Includes the Following Items:1 x HA-A400.4 Car Stereo Alloy Amp 4 Channel 800W Full Range Speaker or Sub Amplifier1 x HA-AK10 Car Stereo Complete 10 Gauge 600W Amp Amplifier Install Kit - Nickel1 x HA-R35 Car Stereo Rhythm Series 3.5" Replacement 90W Speakers1 x HA-R5 Car Stereo Rhythm Series 5.25" Replacement 225W Speakers & Grills HA-A400.4 Car Stereo Alloy Amp 4 Channel 800W Full Range Speaker or Sub Amplifier:Power Handling:14.4V @ 4 Ohm Stereo75 Watts RMS x 4150 Watts PEAK x 414.4V @ 4 Ohm Bridged200 Watts RMS x 2400 Watts PEAK x 214.4V @ 2 Ohm Stereo85 Watts RMS x 4170 Watts PEAK x 4Frequency Response: 10Hz-30kHzSignal to Noise Ratio: 95dB, A-weightedRCAs: InputTurn On: DC Offset or 12V RemoteRecommended External Fuse: 40A HA-R35 Car Stereo Rhythm Series 3.5" Replacement 90W Speakers:3-1/2" Rhythm Series 2-Way Car Speaker PairPower Handling:Peak: 90 wattsRMS: 30 wattsSensitivity: 88dBFrequency Response: 85Hz-20kHzMounting Depth: 1 5/8"Mounting Cutout Diameter: 3 1/16"Tweeter Size: 1/2"Single 4 Ohm HA-R5 Car Stereo Rhythm Series 5.25" Replacement 225W Speakers & Grills:5-1/4" Rhythm Series 2-Way Car Speaker PairPower Handling:Peak: 225 wattsRMS: 75 wattsSensitivity: 90dBFrequency Response: 45Hz-20kHzMounting Depth: 2 1/16"Mounting Cutout Diameter: 4 1/2"Tweeter Size: 1/2"Single 4 Ohm