Pyle 4-Channel Bluetooth Marine Amplifier - Compact Power 400 Watt RMS 4 OHM Full Range Monoblock Stereo & Waterproof - Wireless Bluetooth Receiver Audio Speaker with LCD Digital Screen PFMRA450BW

This is a great little amp and fits my purpose exactly. Have this outside powering two pairs of Dual Electronics LU43PB 4 inch 100 watt speakers. I have to admit between the amp and speakers this is a very good outdoor setup. The amp is mounted outside, but protected from most weather. Been over 30 days with no issues. Love the bluetooth function as I can use to play music from my phone to the speakers. The Bass and Treble functions work very well to sort out distortion.Remember, this is not a big name amp and you are getting what you pay for. I have to admit i'm surprised by the quality and durability so far. If I have any issues, I'll make sure to update.

UPDATE: The A channel on the replacement unit just died. I confirmed by putting two speakers on each of the B channel terminals and the speakers worked fine. These are just poor quality. I’m done with this headache. Returning and won’t be buying any more Pyle products. Amazon customer service has started the process for the return. No issues with Amazon.ORIDINAL POST: First unit would not pair with any devices. I contacted Amazon who contacted Pyle while I was waiting on the phone. Pyle determined that the first device was defective. Amazon immediately sent me a replacement unit that was delivered the very next day. The second unit paired very easily. I am running 4 speakers around my patio and pool. The quality of sound and volume produced is more than adequate for my purpose. The bluetooth range is limited to about 10 feet inside of a plastic enclosure but 20 feet if I open the top. High praise for the customer service from both Pyle and Amazon for quickly replacing the bad unit. Thanks.

I like the design of this amp, the Bluetooth and USB options are great. Everything was easy to install and worked great when installed with the exception of the remote, it performs no function at all. After a few weeks channel 4 mysteriously stopped working. It is installed in an enclosed porch, and has never even been wet. I'm still using it with channel 1 and 2 but the overall experience is disappointing unfortunately.

Worked great to add speakers to our outside space and be able to stream music from echo devices.

For the sake of this review, I will try to be thorough and honest about my experience. I bought this amplifier for a 1991 Jeep Wrangler. It is meant to power a pair of 6.5" 200 Watt RMS speakers, in a Centra-Pod enclosure. The amp and the speakers are marine grade. I was attracted to this amp because of the bluetooth connection built in, as well as the USB and SD Card functionality.I am running this setup without a head unit. I only ever used bluetooth anyway, I don't listen to radio. It's either Pandora, Spotify, or a USB memory drive. After installing the first amp and connecting the speakers, everything worked fine. As you increase the volume on the amplifier, the sound distorts dramatically, starting around the halfway mark on the dial. When I started the Jeep, the sound stopped. I had to cross connect the negative wires on different channels to get the sound to play. And when you turned the vehicle off, you had to reset the wire connections back to seperate channels to get it to play.The first amp, L Speaker to Channel 1, R Speaker to Channel 2, vehicle off, sound works. Turn the vehicle on, sound stops. You have to connect L Speaker positive to Channel 1, and negative to Channel 3, R Speaker positive Channel 2, negative Channel 4. When you shut the vehicle off, you had to return the wires to the original position for sound.The new amp, or second amp, while vehicle is off, L Speaker positive and negative to Channel 1, R Speaker to positive and negative Channel 2, sound plays. Turn vehicle on, set wires to the same positions as the old amp, sound plays. The difference is, when you turn the vehicle off, the sound continues to play and you don't have to reset the wires.I also noticed, when the second amp arrived, there were a few differences. First, there was a warranty void sticker over one of the screws. Second, the SD Card slot and USB slot have rubber plugs making them water resistant. And third, the knobs on the front of the amp are tight to turn. The first amp had none of these things.When the first amp showed this problem, I contacted Pyle directly. I've read reviews on other sites for Pyle products, especially marine grade amplifiers, that state the amps occasionally stop working, and a quick turn off and on again gets the working. Pyle Audio stated that this problem is a known defect in their amps, they offered two options. Ship it to them for repair, or seek a replacement from Amazon. I took the latter. And Amazon was quick and prompt to send the replacement as well as make the return process easy.I'm also being thorough in case I installed something wrong. But since there is only the power, ground, and speaker connections, I don't see where the mistake is. The lack of any troubleshooting or installation instructions only adds to the problem. If anyone is considering buying this amp, I would advise against it. I'm going to continue to use it, but I am going to plan on replacing it with something more reliable. Especially since I want to add more speakers, and maybe a sub-woofer to the setup. The saying is true, you get what you pay for, and in this case, the lack of support and information from Pyle Audio only makes it worse. As of writing this email, it is 940 am, I live in NJ, Pyle Audio is in NY. Google says their office is open at 830am, I have tried calling them 3 times since 9am, and get no answer.So weigh all that in mind when considering this amp. I like to review the negative and low start reviews, and this is the first time where I have experienced what the negative reviews have said. Usually I think it's people with high expectations of a product, but no, in this case, it is just a low quality product.

I bought this for use outside and paired them with Atrium 4 outdoor speakers and it sounds AWESOME. I leave it turned on and use a OMOTON wireless controller to operate it as a bluetooth receiver. I used this for my porch sound system an placed in a waterproof box (SocketBox - large) with my low voltage light controller. I'll add a picture for reference. I do not use the small wireless controller so cannot comment on it. The sound it produces with these speakers is very loud and clear, I have zero complaints, just hope it lasts a long time.Update Aug 2019: tried to use and dead. Placed TWO surge protectors between for protection, but just plain dead. When it worked it was fine but just doesn’t last. Look elsewhere.

Has worked great so far. You can have a USB hard drive full of music and skate right through playing song after song. You'll never get to the end of your music list as there is no menu; forward track and reverse track only. SD card music is the same. I have yet to try bluetooth connection but I know I can choose music from the device connected. There is a volume limit on this amplifier but not much of a difference once you reach a certain level. Currently connected to two(2) Bose 901 series speakers.

Good sound! Easy to connect! Nice value!