Skar AudioSK-M4004D Compact Full-Range Class D 4 Channel Car Amplifier, 400W

very easy to install. this 400 watt amp feeds 4 channels. cicada front speakers and skar 6x9's in rear. loud and clear ...... awesome! 2015 hd street glide

Did not use item

Not a bad little amp. Puts out good power for the price, works well, fairly clear, easy to install.

Great amp. I have it running 2)skar 6x9's, (2) skar 6x8's and (2) skar 5 1/4" speakers and they all sound great .. doesn't get hot and I listen to my music loud..

I bought this for a stereo retrofit project on my 1987 BMW 635Csi. Its a good little amp; puts out a ton of power in a small package. No problems installing it, pretty basic. Minor issue : fan mounted on the bottom so you need to stand it off the mounting surface just a bit. Some have said it gets hot but mine does not at all.... as long as you let some air in/out of the bottom surface vents it's entirely cool. Would definitely purchase it again.

*EDIT 9/19/2018*--I have received a response from Skar support. Their answer was as follows:""Thank you for reaching out to us concerning your SK-M4004D amplifier. Sadly, once you opened the unit to preform an inspection on it; you voided your warranty. However, not all hope is lost. Your unit can still be repaired at our authorized repair center.""--Out of the 6 screws on the back, none were marked as "warranty void if removed". Nothing I have ever worked on in the past (including laptops and other HIGHLY technical electronics) have ever voided the warranty just because the back plate is removed! Never in my life have I ever heard of such a thing. If Because I had volunteered the information about what I had done to investigate the issue, they are now stating that the warranty was voided. I didn't even touch the circuit board! Nowhere on the product OR on their website warranty procedures does it state that removing 6 screws to investigate behind the backplate will void a warranty. NO WHERE! Yet they want to tell me that I voided the warranty because of these screws that could have been rattled out (not even pasted/glued in, or even some weird hex head type!).--Thanks. Skar. You lost ALL business from myself and from my friends/family!--If I could give Skar a 0-star , I would, but suffice to say:STAY AWAY AND BUY SOMETHING ELSE/BETTER!!!!! THEY WILL NOT SUPPORT THEIR CLAIMS FOR WARRANTY!!!**original posting**--I'm not sure on if I would ever recommend this product. One coil is completely broken out while another coil is hanging on by one end.--I took off the backplate when I heard the rattling around inside in order to investigate what was going wrong.--Notice my internal photos and compare them to the stock photos on Amazon listing: In my photo, the amount of glue that holds the coils isn't anywhere near as it is in the stock Amazon photo. Odd, right? Skimping on glue to save a buck. Bad Skar, no cookie.--I have contact Skar to find out about a repair/replace, but I am not expecting much from the company. Supposedly, Skar covers their products for 2 years, but I have a feeling that they are going to pull the "Amazon isn't a branded/licensed/reputable/overpriced dealer, so we won't cover!"--Funny thing is, no other hardware that I have on my vehicle has ever fallen apart like this, especially in such a short timeframe.--Do I expect them to respond? No.--Do I expect a response that actually is beneficial to me? No.--Why do I not expect these things? Because I have had too many bad experiences with manufacturers in the past and I'm still a bit jaded over them.--Would it be nice if something were to come about that would be beneficial to the customer? Heck yeah! But not expecting it.--I'll keep this updated if Skar can come through with a decent reply (if any at all).

great compact size. I use it to run alpine component speakers with no issues with plenty of power

Put the 400w 4ch amp in my 23 street glide and it sounds great. It’s paired with two 6.5” speakers and two 6x9’s hooked straight up to each channel. I would recommend for a bike build.