Your driving experience would be boring and perhaps incomplete in the absence of a good stereo. If you are looking to upgrade to a double DIN Android head unit, there are so many options you have, so much that it can be quite overwhelming for you to make the right choice.
You need to establish the features you require in a head unit before you go ahead to purchase one of the best double din head unit for sound quality. To make the process of changing your head unit an easier one, we are here to discuss some of the essential things you need to know before you can make a choice.
We have also painstakingly gone through the best double DIN Android head units, selected, and reviewed some of the best so that you can make a more informed decision.
Table of content
Comparison Table of 10 Best Double Din Head Unit for Sound Quality
1. Sony XAV-AX-5000 - Best Double Din Head Unit For Android
There are so many things about the Sony XAV-AX-5000 that are guaranteed to blow your mind. A double DIN head unit, it features Android Auto and Apple CarPlay integration that allows easy connectivity and control through the user-friendly interface.
The aesthetic is quite commendable, but what will blow your mind is the highly responsive 6.95” touchscreen on which you can access your maps and media, and also make calls.
It is Sirius XM Radio ready. All it requires is to connect a Sirius Radio satellite tuner, as it doesn’t come with one. In addition to the responsive screen, it features a quick-access key panel, through which you can quickly access some basic features of the unit.
The iOS and Android compatibility makes it possible to easily connect your smartphone, whether you use an iPhone or an Android phone. The Apple CarPlay and Android Auto integration make it quite easy and fun to navigate through your smart phone’s content.
The head unit also features built-in Bluetooth that connects easily to any of your Bluetooth enabled devices. Furthermore, it comes with a wired microphone that allows voice commands without having to hold your smartphone close.
Connect and charge your smartphone through either of the dual USB ports, and access your music library easily. What’s more interesting is the Audio Level Adjustment that ranges from minus 8dB to plus 18 dB, so you’re good in the sound department.
The installation is quite tricky, and it is highly recommended that it should be done by a professional. It does feature a remote control that is compatible with steering wheel remote adapters that makes it easy to control essential functions, even while driving. With a rearview camera input, you can connect to your camera and monitor your rear at all times.
2. Pioneer AVH-W4400NEX - Best Android Auto Head Unit
When it’s time to change your car head unit, the Pioneer AVH-W4400NEX is truly worth your consideration. Like any functional double DIN head unit, it features smartphone connectivity and supports wireless CarPlay and Android Auto.
As it is iDatalink Maestro compatible, you have the option of retaining access to the factory-fitted steering wheel controls. Additionally, this Pioneer head unit features a 13 Band Graphic Equalizer that displays graphically the frequency bands and allows better audio control. Pioneer’s advanced sound retriever is incorporated to recover signals that are lost during audio compression.
While it connects easily to a lot of iPhones, it is quite selective when it comes to Androids, and the Android Auto will only work with phones that have Android 9.0. Nonetheless, you can achieve a seamless connection through USB.
The sound quality is impressive. It features a built-in amp that serves as an extra power output to improve the sound quality.
Furthermore, the head unit comes with a built-in CD/DVD player. While a lot of people would rather play media from smartphones, there is also the option of popping in a CD/DVD anytime you feel like it. With the SD card slot option, you can store some of your media on an SD card and access them on the go.
With the HD radio and Sirius compatibility, you have access to your best radio content, even when on the move. With the Hi-Volt RCA Preouts X3 (4V output) and separate entertainment sources for front and rear passengers, a better audio experience is assured.
3. ATOTO A6 Double DIN - Best Double Din Head Unit for Sound Quality
Justifiably, people have reservations when it comes to Chinese products. However, the Atoto A6 is, without a doubt, one of the best android car stereos out there. It comes with all the necessary features you can think of, well, apart from a CD player.
With smartphone connectivity, you can do well with no CD/DVD player. The stereo features Apple CarPlay and Android Auto, with inbuilt Bluetooth and WiFi connections. Additionally, you get to retain the factory-fitted steering wheel controls (shorted for SWC, based on resistive signal input).
The head unit starts up quickly, and supports unlimited micro USB drive/256GB SD card. The Bluetooth does not only make calls or play media, it can also connect to your smartphone’s BT tethering internet. Continuous firmware update is available for the head unit.
The receiver is designed to support hand gestures that control the system without having to press any button or touch the screen.
Furthermore, it features an inbuilt GPS to help with navigation, and you won’t have to rely on your smartphone’s GPS. With all the exciting features that come with the head unit, it is reasonably priced, and you will find it quite hard to get a similar double DIN head unit at the same price.
The Full HD 7” 1024*600 5-Touch Capacitive Touchscreen with 400cd/m2 or 600cd/m2 displays impressive graphics, even though it is not the most responsive touchscreen. Among other functional elements included are the built-in FM/AM Radio Tuner, built-in microphone, and external WiFi antenna.
Another exciting thing about the Atoto A6 is the impressive sound system that is guaranteed to blow you away, as it comes with a Built-in Max 4*45W Amplifier with RMS 4*24W. If you would love to use a rearview camera, it comes with a back-up camera input, with two additional video inputs.
4. Pioneer MVH1400NEX - Best Android Car Stereo
While this head unit is more suited for iPhone connectivity, Android users can still get some functionality through the built-in Bluetooth connection. The double DIN head unit comes with a 6.2” 800x400 resolution touchscreen that is very responsive, even with a screen protector on it. With the 24-bit true color panel, display, and color customization, you are guaranteed and improved visual experience.
It features 13-band equalizer and plays FLAC audio files up to 192kHz/24-bit, in addition to the high and low pass filters, and subwoofer controls. As it doesn’t feature a CD/DVD player, you have the option of accessing your media by connecting your phone through the USB port.
The latest Hands-Free Profile (HFP 1.6) with wideband speech capability makes it easier for the user to perform hands-free gestures, and through the AVRCP 1.6 profile, you can easily access and select media from your smartphone.
The head unit features an OEM steering wheel remote control input makes it possible to have absolute control over steering wheel controls.
If you are an avid music lover, you will love the variety of music options that can all be controlled from your smartphone, as it is Spotify, Pandora, SiriusXM, and Apple Music Radio enabled. Through the built-in Bluetooth feature, you can make wireless phone calls and hands-free music control.
Features like aux input to play music, backup-camera input for rear view camera, wired remote input, and composite video output altogether make the unit a more functional one.
Interestingly, the receiver can connect to multiple Bluetooth enabled devices at once. Furthermore, the sound quality is one of the best you can get on the market. While it is not the most sophisticated head unit, it is quite functional and is, without a doubt, one of the most popular double DIN head units for Android.
5. BOSS Audio BVCP9685A - Best Android Car Stereo Double Din Unit
The BOSS Audio BVCP9685A is packed full of exciting features that will captivate you as a potential buyer. The head unit features a 6.75-inch capacitive screen on which the various features can be selected and controlled.
Music apps like Spotify, Pandora, iTunes, and Apple Music are all supported, and you have express access to your music content, even when in transit. Some other selected apps like radio Disney, CBS radio, iHeartRadio, WhatsApp, and more are supported in the head unit.
These days, smartphone compatibility is a necessary feature of car stereos. This Boss Audio works with Apple CarPlay and Android Auto, making it possible to activate a number of functions through voice control.
The ID3 Tag makes it possible to store and display media data like track number, music title, artist, and more information.
It is a reasonably priced head unit that features the necessary features a double DIN android head unit should have. It may not be as sophisticated as some high-end stereos, but it is still very functional in its own right.
The CarPlay and Android Auto both require a wired connection, as they can’t function wirelessly. Two USB ports are also included, with one dedicated to charging and media playback, and the other dedicated to CarPlay and Android Auto.
The outputs are reasonably dispersed among the front, rear, and subwoofer pre-amp outputs to connect to speakers and the subwoofer. In addition, it comes with a steering wheel interface to which you can connect an interface module to use the existing steering wheel controls.
This is another Pioneer stereo that is one of the best android auto head units you can get on the market. Packed with more features than you can probably think of, the AVH-2400NEX double DIN head unit is very reasonably priced. It is AppRadio compatible and supports apps like Spotify and Pandora for music and radio lovers. It is SiriusXM-Ready with access to over 140 channels.
With Pioneer’s free AppRadio application, you have full on-screen access to your contacts, maps, news, calendars, and more, on an easy-to-read interface that is specifically designed for safe in-vehicle operation.
While it supports Android Auto and Apple CarPlay, they only work with the phone plugged in. However, this shouldn’t be a bother as the unit comes with two USB ports, one dedicated to Android and the other to Apple devices.
The built-in Bluetooth connection is an essential feature. Even though Android Auto and CarPlay don’t work remotely, Bluetooth is still vital for hands-free control.
Additionally, it comes with a video input, to enable the installation of a back-up camera for safer navigation. Through the in-built Bluetooth (HFP) connection, either Siri or Google assistants can be controlled effectively to make calls, read text messages, and reply to them.
The head unit is compatible with iDatalink Maestro that allows you to keep your steering wheel controls just the way they came; however, you will have to buy an additional interface module.
The 7” LCD touchscreen features multi-color illumination. And even though it is not so high definition with its 800x400 WVGA resolution, the touchscreen is customizable. It also features an HD radio with AM/FM tuner to access your favorite radio stations when on the go.
A lot of the head units that made it to our list are from Pioneer. This is because of the functionality and durability of their head units. Designed to fit into a standard rack, this head unit is relatively easy to install. Notwithstanding, it is advised that you allow a professional to carry out the installation.
It features a 6.2” WVGA clear resistive touchscreen with a resolution of 800x400, and the picture quality is of a high standard. Interestingly, it connects easily to smartphones for hands-free control and easy navigation.
It offers some flexibility in color and display customization, as it has 5 display colors, 122 key colors, and 13 backgrounds. Furthermore, it comes with an illumination timer dimmer setting that you can turn on/off according to your driving timetable, so you don't have to repeatedly set the dimmer.
The Pioneer AVH-X390BS comes with an in-built Spotify feature that allows smooth streaming, even when you are on the road.
As it supports Bluetooth, with the hands-free profile (HFP), you get to connect with your Bluetooth enabled devices, access, and control your media easily. Furthermore, the in-built Spotify feature and the Pandora integration and a couple of other music features improve your musical experience with this head unit.
It is SiriusXM compatible, the SiriusXM tune start, tune scan, and album art display enabled, so you get full access to the satellite radio services.
8. Pioneer AVH-2300NEX - Best 2 Din Android Car Stereo
Another Pioneer 2 DIN android car stereo, the AVH-2300NEX, closely mimics some of the other models reviewed in terms of its features. Like a lot of the other head units, it can be used with both Android and Apple phones, through the Apple CarPlay and Android Auto Feature.
The head unit is SiriusXM ready but will require a tuner sxv300 that is sold separately and service subscription. With the 7” WVGA display and user-friendly interface, the head unit projects a contemporary visual style. Furthermore, it is AppRadio Mode+ compatible.
There is access to Spotify and Pandora streaming for people who love to play music while they are on the go. If you need a head unit optimized for speech assistance, so you can focus while driving, this is one of the head units you should consider.
It comes with an AM/FM tuner with which you can easily select your preferred radio stations. What’s impressive is that reception issues will not be a major problem as the stations are automatically tuned.
It features two USB ports through which you can connect two phones at once. Oddly enough, you will have to choose between Bluetooth connection and music apps whenever you play music, as they both cannot run together.
As it is iDataLink Maestro compatible, you can retain access to the factor control features of your steering wheel, however, you will need to get the iDatalink Maestro RR separately to enjoy this feature.
9. BOSS BVB9364RC - Best Wireless Android Auto Head Unit
The BVB99364RC from BOSS Audio is a unique head unit, and it is indeed one of the best wireless android auto head units. For starters, the stereo comes with a powerful in-built Bluetooth feature that makes hands-free control super easy.
Control the bass, fader, balance, and overall sound style with the preset EQ and make adjustments with ease, through the wireless remote control that comes with the unit. A CD/DVD player is incorporated into the head unit, providing more options to access your audio and video media, in addition to the auxiliary input and AM/FM radio feature.
The external microphone picks sounds clearly, even without proximity to your mouth. For music lovers, the BVB99364RC is Spotify, and Pandora enabled for wireless control.
It features a steering wheel interface that will allow the best use of the factory fitted controls of your steering wheel. However, the interface module is sold separately. The Metra ASWC-1 is recommended.
Multiple audio outputs at the rear and front, in addition to the subwoofer preamp, outputs all connect to your speakers. With the 80 watts x 4 max power, it is recommended that you get an additional amplifier to increase the power to the speakers. A video output is also available to connect an extra screen.
The 6.2” digital touchscreen TFT widescreen display with innovative graphic interface is responsive enough. With the SD port that supports up to 32GB memory cards, and the USB port supporting up to 32GB flash drives, you will never run out of options to access your favorite songs, videos, and pictures.
With the rear camera input, you can connect a back-up camera to help you navigate and park with no qualms. Lastly, the CD/DVD player has protective electronic skip protection that stores up to 5 seconds of music if the disc gets interrupted during play.
10. Sony XAV-AX100 6.4" - Top Rated Double Din Head Unit With Navigation
If what you want is a double head unit that is simply exquisite and functional, check out the Sony XAV-AX100. Not a lot of head units come with physical knobs, but this Sony receiver comes with one, in addition to a couple of buttons that make the control easy.
The 6.4” digital touch screen is not the most responsive, but it is of reasonable resolution. With the 4 x 55 W Dynamic Reality Amp, you need no additional amp to have good sound quality. Furthermore, it guarantees good radio experience through the FM 18/ AM 12 tuner.
It also features Apple CarPlay and Android Auto for hands-free control and navigation. However, it requires USB connection as the CarPlay, and Android Auto do not work wirelessly.
The most striking feature of the Sony XAV-AX100 is the excellent sound quality. It is not compulsory to use an additional amp with the unit, as the sound is good enough just the way it is.
As good as the sound quality is, the 10 band equalizer allows for sound customization and the Dynamic Stage Organizer (DSO) will accurately calibrate frequency output to make the sound produced seem as it is being produced from your dashboard.
With the built-in Bluetooth feature, you can also establish a smartphone connection to make and receive calls hands-free. Although there is no rear camera included in the package, it has a camera input for this purpose.
To retain the factory fitted controls of your steering, you will need to get a separate Metra Axxess accessory. All in all, it is an exquisite but functional double DIN head unit.
What You Should Know About Single DIN and Double DIN
There is a standard used to specify types of radio head units, and that standard is called DIN. This standard originated in Germany, but it is used internationally as the adopted standard by car stereo makers, and it typically signifies the width and height of car head units.
There are two different car head units specified in the DIN standard; the single DIN and the double DIN.
DIN has to do with the width and height of car stereos; it has nothing to do with the connection type. This is why you can easily replace car stereos when you are not satisfied with their features, or they develop faults.
Single DIN head units are two inches tall, measuring 7” x 2”. It is important to note that this DIN standard does not in any way specify depth.
On the other hand, a double DIN head unit measures 7” x 4”, with the same width as the single DIN but varying height. A double DIN unit is twice as tall as the single DIN, almost like stacking two single DIN units on top of each other.
Differences Between Single DIN and Double DIN
There are not so many differences between single DIN and double DIN unit heads, and the most fundamental difference is that of their dimensions. With the single DIN being 7” wide and 2” tall, the double DIN is also 7” wide but 4” tall.
However, there is no universal standard for depth. While a lot of car stereos feature a common depth, there is no single standard for it. Apart from the differences in dimensions, here are some of the other differences between single DIN and double DIN head units.
This is hugely relative, but it remains one of the significant differences between these two DIN types. Usually, double DIN units have more smart control options that make the usability more comfortable and pleasant.
Features like smartphone connectivity and camera make the use of double DIN head units easier and more enjoyable.
This doesn’t take anything away from the functionality of single DIN head units, though, as they are the perfect embodiment of the saying “less is more.” Single DIN units are very practical and do not offer much flexibility in features or operation
This is another aspect where these two DIN types differ from each other. Double DIN units have more advanced features that make them more convenient to use. While single DIN units have basic screens and very few additional features, double DIN units feature larger screens.
They are mostly touchscreens with a variety of extra features like smartphone connectivity, DVD players with digital displays, high storage capacity, and high definition screens.
A few single DIN units do come with exquisite features like slide-out screens, but they don’t come close to the other type. It is only practical that double DIN units have more features as they are larger and they have more space to incorporate these features.
In addition to the various features that come with double DIN head units, the radio receivers have a wider range. They are more sophisticated when compared to single DIN head units.
Owing to the various features and sophistication of double DIN units, they have significantly higher cost implications than single DIN units. When changing car stereo systems, the cost is an essential thing to consider.
However, it is not the only thing to consider, as there are other factors that will influence the choice of a stereo system. If you have a limited budget, you may have left with no choice than to go for a single, with all other things being equal.
Why a Double DIN Head Unit Is Better
Before you go ahead to choose a head unit for your car, you should know the advantage one type has over the other. For a couple of reasons, the double DIN head unit is better than the single DIN head unit, and some of these reasons are discussed below.
These days, smartphone connectivity is up there among the most important features in a car stereo. There are single DIN units that have the smartphone connectivity feature, but double DIN units feature more advanced connectivity.
From WiFi connectivity to internet connectivity, it is easier to sync your tech device with your stereo. More than the internet connection, they also come with USB, AUX, and SD card slots. While some of these features can be found on some single DIN units, it would be a struggle to find one that incorporates all these features.
High definition video screens
As a result of their larger size, double DIN head units can accommodate some features that single DIN units can’t. One of such features is HD video screens. Recently, car stereo manufacturers have tapped into this to develop features like rearview camera feed.
Also, DVD/CD players are now so common in car stereos, as people have become more interested in the high definition display that they can access for the comfort of their cars.
If you’ve ever had to change car stereos, then you know that compatibility can be a serious issue. Perhaps, this is one of the reasons why a universal standard had to be adopted.
Single DIN slots cannot house double DIN head units just because they are not big enough. On the other hand, if you have a double DIN slot and you have to replace your car stereo, you have the option of choosing a single DIN or double DIN unit.
Most of the advantages of double DIN head units are a result of the size. Car stereo manufacturers can be more flexible with features on double DIN units than single DIN units.
Advanced features like touch screens that make for more comfortable control are now being included in double DIN head units. Furthermore, other smart functions like GPS navigation are more suited to double DIN head units.
While storage space is not a direct function of size, double DIN head units have higher storage capacities compared to single DIN units, and they are more compatible with high capacity storage devices.
Their advanced features require more storage space, and if users will get the best out of the elements, more storage space is required than in single DIN head units.
How to Install a New Head Unit
Various reasons can make it necessary to change your car stereo. Whatever the reason is, the removal of the old unit and the installation of the new unit is not a task you cannot accomplish by yourself, more so if you are a DIY enthusiast.
It is advisable to get a professional to install your new head unit if you are not confident in your ability to carry out the installation. Nevertheless, if you decide to install your new head unit, here are some guidelines.
Make sure you get the right head unit
You have to understand the two types of head units and the difference between them before you go out to buy one. Without an understanding of head unit types, you stand the risk of buying a head unit that won’t fit your slot.
A double DIN slot may accommodate a single DIN head unit, but a single DIN slot will not accommodate a double DIN head unit. To avoid a waste of money and effort, be sure to check your head unit type before purchasing another.
There are some essential tools you’ll need to remove your existing head unit and install a new one. It is not likely that you have these tools lying around, so you may have to get them from the hardware store.
Another reason why you should consider getting a professional to install your stereo is that a professional will most likely have these tools already. The following are some of the tools you will need to remove and install a head unit.
- Wire cutters
- Soldering iron
- Wire stripper
- Panel removal tool
- Screwdrivers (Phillips and Flat Blade)
Removing the stereo
There are two ways your existing stereo could have been installed; by spring clips or with bolts/screws. You may have to remove the trim panel before you can discern the installation fastening method.
The trim panel can also be held in place by pressure clips, in which case you need to use the panel removal tool to pry it loose. If the trim panel is screwed in, locate the bolts, unscrew and pry the trim panel off.
Furthermore, in some car stereos, you may have to disconnect some switches and wire connectors before you get to remove the head unit. Pay attention to wires and switches you disconnect, as you’ll have to reconnect them when installing the new unit.
After removing the trim panel, you should see how the factory stereo is fastened. If they are fastened with bolts/screws (either to the dash or side brackets), remove the fasteners and slowly pull the stereo from the dash.
- Spring clips
You will need a pair of DIN tools to remove the head unit if it is fastened by spring clips. All you need to do is insert the tools into the holes on both sides of the stereo until the spring clips are released. You should hear a clicking sound that indicates the release, after which you can safely pull the head unit out.
Unplugging the stereo
After the disconnection of the fasteners and the pulling out, you should discover one plastic wiring harness or more behind, provided that the stereo has never been changed before.
The plastic wiring harness connects the stereos to the speaker and the electrical system. Before you can finally pull the head unit out, you need to disconnect the wiring harness.
Installing a new head unit
When the wiring harness matches your new head unit, you will have the most effortless installation. This rarely happens, though. However, there are two options to carry on with the installation.
You can either buy an adapter that is specially designed for your vehicle or cut the existing harness off and connect the wires to that of the new head unit. If the car’s wiring harness has been cut before, you’ll have to figure out how to connect the wires to the new stereo.
When the wiring harness does not match your new stereo, and there is no suitable harness adapter available, soldering or crimping the wires are the options available.
Crimping is the easier method of the two to connect the wires. They come in varying sizes, so you have to get a suitable size connector. Twist the wires to be connected and insert into the crimp cap, after which you should squeeze in the middle with a plier or crimp tool.
Soldering is not as easy as crimping, but it creates a more permanent bond and better current transfer between the wires. Strip both wires to a reasonable length, twist them together and then solder. To keep the connection safe, tape the wires after soldering.
Put the head unit back in place
If you pay close attention when removing the head unit, you should be able to put the new head unit back in place with no qualms. You should turn on ignition before you finally fasten the head unit, just to confirm if you have installed it correctly. If the head unit doesn’t work correctly, double-check the wire connections to ensure that you have not made any mistakes.
If you get so stuck that you cannot go on at any point, stop the installation process immediately and get someone with experience or qualified professionals to take a look at it so that you don’t cause severe damages.
Frequently Asked Questions
How Can I Install an Android Head Unit In My Vehicle?
Installing an Android head unit in your vehicle can be quite tricky, and it is advised that you always get a professional to install an Android head unit in your vehicle.
However, if you are quite handy and comfortable enough to open up your dashboard, you should be able to carry out the installation. Installing an Android head unit typically includes the steps.
- Removing the existing stereo
- Preparing the new Android head unit
- Crimping and soldering
- Installing the new Android head unit
How Do I Mirror My Android Phone to Double DIN?
For safety reasons, it is essential to reduce interaction with smartphones while driving. This being said, some important actions may require you to access your phone while driving. Navigating, playing music, and making calls are some things you need to do while driving.
If you can successfully mirror your Android phone to your head unit, you can safely manage your phone as you drive.
The commonest method used to mirror Android phones to head units is through the MirrorLink tech.
This tech helps project your phone to your double DIN head unit, where you can easily navigate the various apps. However, not all Android phones and head units are compatible with MirrorLink.
Can I Use Apple Devices With Android Auto Head Units?
The simple answer is no. If a head unit is exclusively designed for Android, you will not be able to use an Apple device with it. The good news is that a lot of the head units on the market today are designed to be Android and Apple compatible.
How to Pair?
A head unit that is Bluetooth enabled can be easily paired with your Android device to access the important media. A lot of head units that come with Android Auto do not support wireless connections, and they require a connection through USB. However, the Bluetooth connection remains the easiest.
Will My Steering Wheel Controls Still Work After Installing a Double Din Head Unit?
Yes, your steering wheel controls can work after you install a double DIN head unit. To get it working, you will need to install a specific interface module.
Find out which steering wheel interface is compatible with your vehicle. The AXXess ASWC-1 is a universal steering wheel control interface that is compatible with a lot of steering wheel controls.
How Do I Know If My Car Stereo Is Single or Double DIN?
The only distinct difference between a single DIN stereo and a double DIN stereo is the dimension. Typically, a double DIN stereo will incorporate more features, but the basic difference is still the dimension. Single DIN stereos measure 7” x 2” while double DIN stereos measure 7” x 4”.
What Is the Difference Between DIN and ISO?
They are both standards used in the engineering industry. The DIN (Deutsches Institut fur Normung) is a German standard that has been in use for a long time, used in engineering and other related industries.
The ISO (International Standards Organisation) is a more recent standard that has evolved to simplify and standardize technical specifications as it relates to fasteners in engineering. Both standards are still used to specify fasteners today.
Smartphone compatibility is an essential feature in any head unit you choose. These head units reviewed are some of the very best double DIN Android head units you can get on the market today.
Head unit installation can be really tricky, and it is advised that you should get a professional to install your head unit.
Nonetheless, if you feel confident in DIY abilities, you can give it a try. Some of the essential things that you need to know about head units have also been discussed.