Rockford Fosgate M5-800X4 800 Watt 4-Channel Element Ready™ AmplifierGeneral Features:CEA-2006 Compliant: YesNumber of Channels: 4Total Power (Sum of Rated Power): 800 WattsRated Power (RMS Continuous Power) CTA-2006 GuidelinesCTA-2006 Continuous Power Rating100 Watts x 4 @ 4Ω100 Watts x 4 @ 2Ω200 Watts x 2 @ 4Ω Bridged/Mono≤1.0% THD+NDynamic Power (PVC/Power Cube®) CTA-2006 GuidelinesCTA-2006 Dynamic Power Rating125 Watts x 4 @ 4Ω200 Watts x 4 @ 2Ω400 Watts x 2 @ 4Ω Bridged/Mono≤0.25% THD+NBridgeable: YesFrequency Response: 10 Hz - 50 kHzInput Sensitivity: 150 mV - 12 VCircuit Topology Class: Class-ADEfficiency (average) >75%Total Harmonic Distortion (THD+Noise)<1.0% (Continuous)<0.25% (Dynamic)Signal Input Low-Level: 4 RCAHigh-Level: (2) 4-Pin Molex)Signal Output-Tone Controls High Pass: 12.5 kHz @ 14dB/Octave ButterworthLow Pass: 45 Hz @ 18dB/Octave ButterworthCrossover Controls High-Pass:50 Hz - 250 Hz @ 12dB/Octave ButterworthLow-Pass: 50 Hz - 250 Hz @ 12dB/Octave Butterworth All-Pass: YesRemote Controls: NoVisual Indicators Power: BlueProtect: RedInput Clip: RedOutput Clip: Blue/RedPower Wire Gauge: 8 AWGPower Input Connector Compression Terminal BlockSpeaker Wire Gauge: 16 AWGSpeaker Output Connector: 4-pin Molex to tinned bare wireCooling: ConvectionHeatsink: Extruded AluminumOperating Voltage: 9 - 16 VDCRecommended Fuse: (not included) 100 AAverage Current Draw (13.8V Music) 29 AMax. Current Draw (13.8V Sinewave)55 A @ 4Ω85 A @ 2Ω90 A @ 4Ω BridgedSuggested AlternatorDimensional DiagramDimensions (H x W x D)1.7" x 4.25" x 8.41"(42.8 mm x 108 mm x 213 mm)Does not include harnesses This unit is manufacturer Refurbished, Unit appears in a brown box, and is guaranteed to work perfectly. Some items may have cosmetic blemishes which will not affect the units ability to operate. This Unit Comes with ALL accessories supplied by the manufacturer and includes a 90 day warranty. Sound of Tri-State's General Shipping Policies: We will ship to anywhere in the continental United States for Free on products indicating free shipping. If you have an APO address, or HI, AK or PR we will need to quote shipping prior to your purchase. Please email via the eBay messaging system and we will be happy to quote your shipping fees. On items that are not indicated as free the shipping rate will be calculated by weight and postal code and can be found using the shipping tab located at the top of the listing. Smaller items less than 1 pound will most likely be shipped via usps first class mail provided they are within measurements. Anything 2-5 pounds will most likely ship via usps priority mail or parcel select provided they are within measurements. Anything over 5 pounds with larger measurement will be shipped via UPS. Please indicate on your paypal payment in the notes section if you cannot receive usps at your physical address and indicate your postal address in the notes section of paypal. Please Note: Any items over $400 will be sent signature required and the customer must make themselves available at the shipping address to sign for the package as it arrives. Return Policy Please Refer to the Returns Link at the top of the page for more in depth information regarding returns. General Return Policy: No returns will be accepted without a return authorization, which will be given on a case by case basis at Sound of Tri-State's discretion. Please email us using the Ask Seller a Question Link to obtain a return authorization number. NOTE: Any return that does not have a return authorization number written on the outside of the package will not be accepted. We only ship to the address we have on file. Sound of Tri-State has the sole discretion as to what is warrantied. Also Sound of Tri-State is not responsible for any shipping charges. It is our intention to keep you, the customer happy. With that in mind, we will do our best to repair or exchange the item sent back to us in good faith. For returns made 14 days from date of purchase, payment will be refunded less shipping and handling and up to a 15% restocking fee, if a refund is wanted. The item has to be complete in order to receive a refund. If an item is found defective within 14 days, the customer does not have to pay the restocking fees to receive the replacement unit or refund. After 14 days from your receipt date, defective items may be repaired or replaced at Sound of Tri-State's discretion (Except Remanufactured products, which are only repaired.) The customer will need to send payment for return shipping and handling. The return fee is a non-refundable service fee and will not be part of any credit issued. Support/Customer Service Please feel free to contact us for any and all support that you should need. We have trained technicians on staff and ready to help with you with any questions. Office Hours: 10AM - 5 PM East Coast Time We encourage you to use email for all communication so we have a record on file. We are open Monday to Friday from 10 a.m. to 5 p.m. EST (Eastern Standard Time). Sales, Payments, Service, Technical Questions or RMA questions: Please use the eBay "Ask Seller Question" Link