BOSS Audio Systems MC900B 4 Channel Amplifier for ATV UTV Car Marine - 500 High Output, Low Level Inputs, Full Range, Weatherproof, Bass for Subwoofer

Awesome product! I have this in two Japanese imports that I wanted to retain the OEM radio (that doesn’t work in the USA) but still have tunes. It was easy to wire this system into the OEM speakers and now I have music. Side note, this is a better amp then most head units so you can even upgrade your speakers for better sound.

Installed in a classic car i did not want to remove original radio . installation was very easy due to small size it is hidden behind glove box. Paired with my phone very good. connects when i turn key on 1 beep its connected . Has very good power no sound adjustment though bass is low can add amp if desired i am very happy much better that 1 speaker AM. LOL

I bought this amplifier because i wanted to play music but did not want a complete radio system as car is build for street and strip. This Bluetooth amp was what i needed. i installed a radio delete plate in the factory location as this is where i will mount accessory switches (electric fans and fuel pump) and start button. This unit is small enough to hide anywhere under the dash or in glove box. The sound is excellent for its size. I have it hooked up to a pair of 6.5" Rockford Forsgate P1650 speakers for the rear and the center dash speaker is the Retro Sounds dual voice cone speaker and all sounds very well - loud enough too. i play music from my iPhone. What i wish it had was an app to allow adjustments to front and rear or left to right but it truly isn't necessary as it sounds fine the way it is. What i also wish it had was a built in mic so i could answer calls and hear calls over the car speakers. For the money spent and to have very good sound in the car, this was a great option. Now, i hope it lasts. follow the instructions to the letter and make sure you have a good ground. When wiring speakers it is important to wire them correctly + / - terminals must be correct. take your time.

Anyone having any trouble with the ignition wire? Did tried going to a toggle switch and or wiring it red&yellow to the battery can’t get it to work

I have the product installed in the glove box of my 1951 Chevy truck. I bought the Item in 2022 but didnt get it installed until late 2024 it worked well for a few months now the music comes on and off. I sure they will say I've had it past the support policy. I should have lasted a lot longer than a few months. Very disappointed 😞 I will repost if I get some help on this.

I was able to effortlessly connect my Samsung Note 4 Android phone to it and hear all of the audio from my phone: taps on screen, text msg tones, ringtone, Google Maps Voice-guided Nav, Spotify, etc. It will soon be tested with a Windows 8.1 Pro PC with an ASUS BT 400 dongle. If I'm able to update my review at a later time, I will let you all know how that worked out too.With this amp's lack of an built-in equalizer (mentioned as EQ going forward), you will need to have an EQ on the device you're broadcasting audio from (BT, 3.5mm, etc). Android appears to have an equalizer built in (at least on the newer versions, I'm running 5.1.x), however I probably didn't look hard enough to find the user interface where I could control and manipulate the EQ. So I jumped on the Play App Store and found a few options, some free, some paid to remove ads. I initially downloaded "Equalizer FX (Free)" to see if it worked - it did, very nicely too I might add. Please note: you will be prompted to disable the Android's built-in EQ when you initially attempt to enable the Equalizer FX EQ. This is a one-time step. After verifying it basically did what I needed, I paid for the ad-free version - hate ads! The only quirk I've found with the app, which I is associated solely with this particular app, not the amp, is that when streaming audio, with the EQ enabled and adjusted to my liking, and using Google Maps Voice-guided Navigation at the same time, the EQ freaks out and the bass boost is pumped up to what seems like the max. But again, this is an app-specific issue and not related to the amp. Just a tip for my fellow Android users who may be beginning their search on how to get up and running.Overall, I'm very, very happy with my purchase and would recommend it to a friend who was in need of a BT amp!

After install air conditioning in my Chevy Impala it made me lose a lot of glove compartment space where i originally had a pioneer single din head unit …..after i was thinking to buy an amp ($140ish) ,and the Bluetooth adapter for another $40 or so but then i would have to find a spot for the amp(under the seat i feel is dangerous ,and in the trunk i was limited on space plus that would leave me to extend wires ). Since my single din was already in the glove compartment i decided this unit would just make everything easier….which it did by hiding it under the dash near the a pillar above the kick panel.Love the option to add an amp( now i only have to hide one amp) / eq ( recommend because the rear is a little louder than front and needs tuning).I recommend

Had this installed in a golf cart and after a few months, it failed and wouldn't pair to anything. I'm a software/hardware expert and did every possible bluetooth reset according to the instructions, disconnected power for hours, you name it...bought another and swapped out and it worked.Seems like a shoddy bluetooth implementation.