Sounds great! Cheap way to put a decent system on your bike. All I could ask for! Very good quality! Not a lor of base, but great sound!

El fabricante me hizo el favor de respetarme la garantía pagando solo el envio. me mando la nueva versión la cual funciona perfectamente y sin problema alguno

Ur item snapped from vibrations of my harley and can not be fixed because you tac welded a Screw for the speaker support, and that tac weld being the weak link to the speak, now I have a busted speaker. Ur product is cheap and not durable enough for a Motorcycle. Worst waste of money so far., not to mention theyre not loud enough, and they cant stay connected to my phone. Zero star

Memory card is noot working but with pen drives its v.good

Have the system for six years so far. There is nothing like having music while you ride and not be tied down with earbuds or helmet speakers. Pretty basic wiring, radio is a little sketchy, but I just use the Bluetooth and listen to my music. Remote control is a little testy sometimes but I would still give this a five star because of how much I enjoy it. Great value and worth the price.

Super Sound, Frontseite mit Wasserschutzdeckel, einziges Manko die Stecker am Kabel.

todo excelente

Easy to install, sounds really good. The only knock on it is it needs a relay to turn the battery power on and off with the ignition or if you forget it on it will stay on if you run straight from the battery. other than that its a nice little unit.

Took me 2 days to install, but only because how I placed the wires and where I put everything.I used a single pole single throw relay switch to power the amp. Power is cut when the key is off and on when the key is on. The relay is connected to my illumination at the fuse box. I initially was going to install a handlebar switch to cut power to the amp. This would have been overly redundant and so I did not. With the relay switch there are 3 switches. One at the ignition, one at the installed relay switch, and one on the amp. The amp will turn on to its last setting, stay off when the key is turned if it was off previously, and will shut off after a few minutes if no signal to the speakers is present.DO NOT CONNECT DIRECTLY TO THE BATTERY. USE SOME KIND OF SWITCH TO CUT ALL POWER TO THE AMP. THE AMP ALTHOUGH TURNED "OFF" STILL DRAWS POWER DISPLAYING THE WORD "OFF". ALSO IT MAYBE CONFUSED AS BEING OFF WHEN IT IS ACTUALLY PAUSED OR MUTED. ALL THIS WILL CONTINUALLY KILL YOUR BATTERY.DO NOT RUN THE AMP OR PLAY MUSIC WITHOUT THE MOTOR RUNNING. THIS WILL DRAIN YOUR BATTERY WITHIN 10 MINUTES AT ANY VOUME OR SETTING. I TESTED THIS.The speakers were are real pain attaching to my handlebars. The first speaker took 45min!!! There are several loose pieces that "explode" under the spring tension of the clamp before you get the locking nut on and the windshield and handle bar get in the way, too.. I cut the speaker wire ends off and removed the speaker from the clamps. that made it much easier to get the clamps tight enough to place the speaker and thread the nut. I also used the thicker rubber pad that came with the speakers. Once you get everything bolted around these pads it is secure.The sound is ok. I wear earplugs when I ride and can hear the music clearly with earplugs in while riding. I don't realize how loud the speakers are until I take out my ear plugs. No wonder people at stoplights look at me and start to headbang. My music is loud!!!I placed the amp on the external back of my saddle bag for ventilation...I assume a lot of the issues people have had with the amp is related to ventilation and overheating because of where they placed the amp (in a fork bag, saddle bag, under the seat). Never saw any one put the amp there and thought I'd try it. It works and the buttons are reachable while driving. In this location, it doesn't get extremely hot like some people have described.On the amp there is an SD card, USB reader, FM Radio, and Bluetooth.The FM tuner is ok. Finding a good place for the included antenna to get a good signal is a problem. DO NOT ROUTE THE ANTENNA NEAR ANY WIRES THAT CARRY CURRENT SUCH AS BRAKE LIGHTS OR BLINKERS. It does pick up signals but they sometimes cut in and out. A mountable radio antenna (like a car's antenna) would greatly improve reception. I don't think the amp allows for just finding a station you may want. It only scans for the best signals and adds those to presets and there is no way to just choose a specific preset station. It is sequential (like a motorcycle gear box). For example, if you are on preset one you must go through preset 2-9 to get to preset ten. There is no skipping presets. No big deal for the radio. I'll likely use bluetooth more.Never used the USB. It might play music from at attached phone but unsure. The USB will not charge your phone.The SD card is good with one drawback. If you have multiple artists, multiple albums arranged in folders, like I do on my SD card, there is no "random" setting. It plays every song from whatever artist and album before you can get to a different artist.There is an internal EQ on the amp for the SD card and USB. It does improve sound quality a little bit. I don't understand why the EQ is not available for bluetooth or the FM radio. I use those more!The bluetooth simply works. You can pause tracks, skip tracks, etc. With my phones EQ the sound is good through the bluetooth. But it will not play phone calls through the speakers. No need for that. Just ride your bike and nothing else!!!The remote is good. Long pressing for volume, power on/off, EQ, and other settings is sometimes a pain. It comes with a key chain attachment. I used an adhesive attachment and put it on my handle bar. See the pictures.Overall it does what I want. Music!!! Hopefully it will last.Always ride responsibly and don't mess with the amp or remote too much. This might distract you from driving!!!

Easy installation, only a couple issues, 1: if my phone volume is too high the speakers skip terribly, 2: the aux cord is too long and i think it would be better as a port, 3: issues with using sd card, probably just me though. Overall good product, not too expensive for what you're getting, and on my personal bike the size works so it doesnt look stupid

Great system. We can hear it clearly even at hiway speed with full face helmets. Not much bass but it was expected per reviews. Fast shipping and easy install.Update: I've had this for a couple years now and it still works great. I made a mount for the amp and attached it with the batwing mounts. That way it's covered pretty well but gets plenty of air. I use a memory stick and the FM and still works and sounds great. Speakers are on the bars and somewhat covered by the 3 pocket windshield patch. They've been thru constant 95° days, cold(38°) rides and downpours. No complaints.As far as draining the battery, wire it thru a relay that's run thru a circuit that shuts down completely when you shut off the engine, not just straight thru the battery.

Well I finally had a chance to get out on the road with this today. The volume was impressive I could not stand to listen to it at full volume at 55 MPH. The tone is a little "trebeley". but that is to be expected from a 3" speaker that is doing the full range of sound. The bluetooth worked well and the FM tuner is okay. I have not tried the USB or SD cards yet. I suggest going on Boss Audio's web site and reading the owners manual to fully understand this unit's limitations. I had to fabricate a bracket out of a piece of 18 GA stainless steel to mount the amp. You can see it in the pictures. I noticed that the reviews seemed to cover several models all lumped into one group. The unit comes with a 7.5 amp inline fuse in case you are worried about amp draw on your system. You can't really hide the MC520B in a saddle bag because of needing to get to the controls unless you just wanted to use the remote. I thought the remote would be dangerous to use on the road as a driver. However my wife loved being able to control things from the back seat. I will try and update this later and see about durability. For the price, you can't go wrong with this.Update: I got some SD cards to use with this and loaded a bunch of music. I had a problem with it just sampling the first 5 to 10 seconds of each song. I went back and converted all of them to MP3 format and it works great.