10.25" RSNAV Series 4 Android 10 Snapdragon 665 8GB/128GB USB 3.0 Digital Audio for Audi Q3

Sale price $600.00 USD Regular price $700.00 USD


Expect a month or 1.5 month to receive your order. 

Currently, available for Left Hand Driver only(US spec).
For Right Hand Driver(UK, AUS spec), please contact us first for availability.

* You may need Audi Aux to AMI adaptor and it is NOT included in the kit. In some cases, you need this cable to get sound from RSNAV device. You are advised to purchase it from Amazon or your local Audi dealer. 

S4 Pro: Full android system with features below

S4 Ultimate: S4 Pro + 360 degree 3D bird eye view support + 4 AHD cameras 

 Comparison Chart

RSNAV S4 RSNAV S3 AliExpress's Best
CPU Snapdragon 665 Snapdragon 450 Snapdragon 662
RAM/ROM 8GB/128GB 4GB/64GB 6,8GB/128GB,256GB
OS Android 10 Android 9 Android 11 claimed
LCD Max Brightness** Applicable only to the 10.25" panel 1200 ccd 1000 ccd varies average 800 ccd and up to 1000 ccd 
LCD resolution 8.9", 10.25", 12.3": 1920 x 720 8.8": 1280 x 480, 10.25", 12.3": 1920 x 720

Lower price model 8.8": 1280 x 480, 10.25":1280 x 480

Higher Price model 10.25", 12.3": 1920 x 720

Full I2S digital Audio Circuit(analog noise insertion resisting) Yes No No
Bluetooth  5.0/4.2 BLE with 3 different modes for every peripheral use scenario supporting police radar detector apps or any other Bluetooth serial comm. Apps. 4.1 in 2.1 backward compatible mode with limited functionality (Handsfree, Music streaming, CarPlay only) 4.x or 5.x in 2.1 backward compatible mode with limited functionality (Handsfree, Music streaming, CarPlay only)
Digital Sound output Digital Coaxial (PCM), Optical Fibre(Toslink) none none
USB USB 3.0 (1), USB 2.0(2) USB2.0 (2) USB 2.0 (2~3)
CVBS, AHD 720p Camera support Yes Yes Yes
AHD 1080p camera support No No Some claimed
Wired CarPlay without accessory Yes No No
Wireless CarPlay Yes Yes Yes
Wireless Android Auto Yes Yes  Some claimed
Wired Android Auto Yes Yes Yes
Screen mirroring Yes Yes


Price $650~800USD $550~850USD $350*~800, $350 units are mostly outdated Android 7.0 with lowest resolution of 1280x720 for 10.25" and MediaTek CPU 2GB RAM/32GB ROM similar to RSNAV S1 offered 4 years ago. 
4G LTE Modem

World Wide Modem
LTE FDD: B1/B2/B3/B4/B5/B7/B8/ B20/B28

NA modem


China modem
LTE FDD:B1/B3/B5/B8 
LTE TDD: B34/B38/B39/B40/B41

DSP Full Digital 13 bands: There is no signal processing after DAC thus even analog stereo output is just a direct product of clean digital signal Analog 13 bands: EQ is digital but outcome is post-processed in analog thus usually lose much of bass and weak to environment noise insertion Analog 13 bands: EQ is digital but outcome is post-processed in analog thus usually lose much of bass and weak to environment noise insertion

 Specs and features

CPU: 2.0Ghz Qualcomm Snapdragon 665 CPU Kyro Gold
ROM: 128GB
SPDIF Digital Coaxial and Toslink output
Wired CarPlay and Wired Android Auto
Wireless CarPlay and Wireless Android Auto
USB 3.0(one) port
USB 2.0(two)

- Native Wired CarPlay via USB 3.0 without any dongle accessory. Quick and most stable way to use CarPlay without any hassle due to radio interference or instability.

- I2S Digital Sound circuit full digital sound processing that is free from any noise* within the PCB.  It means we guarantee that there is no noise insertion from our system up to both analog and digital outputs. Superior to any existing aftermarket Audi product.  

- Bluetooth 5.0/4.2 BLE is readily available to be used in triple modes

GOCSDK mode for Conventional Handsfree and Music Streaming with the supports for Wireless CarPlay and Wireless Android Auto

HPF+A2DP mode Bluetooth Sink Using Android 10.0 native support (Wireless CarPlay, Wireless Android Auto disabled in this mode), Similar to GOCSDK mode, but using Qualcomm's official way to use Bluetooth Hands-free and Music Streaming from your phone. Many apps will be requiring this mode in coming future. 

SPP+HID mode for Normal Bluetooth mode connecting to Audi Original BT system to stream music from RSNAV device and connect to specialty Bluetooth devices such as radar detector system, OBD Eleven, etc that require full Bluetooth 5.0/4.2 BLE feature. (Wireless CarPlay, Wireless Android Auto disabled in this mode)

- Digital Sound output(Optical Fiber and Coaxial) for aftermarket DSP system.

- A True USB 3.0 port with Quick Charge

- 4K HEVC Playback

These are unique to RSNAV S4 systems for your Audi. For example, many manufacturers claim that they support BT 5.0, but it means only the hardware is capable but no software to use BT 5.0, but work 2.1 compatible mode. RSNAV is the first manufacturer for Audi that offers full Bluetooth library. Also many advertises DSP function, but they rely on analog 2ch sound processing and losing much bass sound and interferences. RSNAV, on the contrary, truly introducing full digital I2S sound processing to eliminate unwanted noise interferences. 

- Android 10

Indeed Android 10 sounds outdated whereas many offers Android 12 or up, but half of them are just fake Android 9 with 12 skin. Indeed, Some MediaTek devices indeed running Android 12 or up in the market. However, those MediaTek devices are buggy and incomplete in terms of software perfection. RSNAV's Android 10 is the most polished system that is continuously updated for its life time. Qualcomm released Android 12 source codes for Snapdragon 665 platform thus OS version may be upgradable. However, OS upgrade is not an easy job as most Android OS version increment results in tighter security measures that hinders integrations with car system while providing minimal feature upgrade. RSNAV will look into free OS update if and only if such update deemed  beneficial for drivers.  

- AHD/CVBS Aftermarket HD class front/rear view camera support (AHD 720p 25hz)

- Most advance integration with Audi OEM system
  OEM Interface for Audi Factory Navigation, Car Settings, Oil Level, etc still accessible in the conventional way using knobs and buttons.
  Parking Sensor and OEM Rear view/Front view/360degree view system works as they were. Even most car models parking sensor display can be overlayed on aftermarket camera. 
 Reverse view switching is automatic on automatic transmission vehicles. For manual vehicle, a signal wiring to the parking aid button or reverse light is required. 
 Aftermarket Rearview camera mimics the factory reverse camera behavior. Reverse view appears when shifting to Reverse and the same view (or switch automatically to front view if a front camera is installed) will continue to be displayed after shifting into Drive mode until the vehicle reaches 10mph or 15km/h.
 Factory Bluetooth system can be used simultaneously without hassle. 
 Android Navigation Guidance Voices(eg. Google Maps), and Android handsfree voice can be heard through left side speakers(Mostly B8, C6, 8V, 8U)/middle speaker(Mostly C7, B9) while you are listening to FM/AM/Satellite Radio.
 Audi Voice command key on the steering wheel can be used to activate Siri, Google Assistant. 

Ultimate version - Four AHD cameras and 3D 360degree view app to see your car surrounding seamlessly in real time 3D. Image Quality is similar to that of 2020s Audi C8, D5 cars(A6, A7, A8 variants) - Details to be followed

Ultimate version is the same device like pro version except it is supplied with 360 camera decoding module inside the motherboard, exclusive 3D Birdseye view app and four AHD Sony Starlight Cameras working at 720p.

Note that no replacement mirror cover with pre-drilled hole for camera is included in the kit. You may need to purchase spare mirror covers separately. We do not have them.

At this time, I have to remind you that to install 3D 360 degree view, you need to remove all door interior panels, side mirror assemblies, pass wire through the front firewall(OEM method is passing inside the fenders, remove trunk/tailgate trims. The worst is to passing wire from body to doors using OEM passage. There is no way to reuse the OEM harness and cameras are not direct replacement to the OEM equipment. If you are hiring someone else to do this, the minimum labor cost is likely 2,000 US dollars or 20 working hours.