Buying the right bluetooth stereo audio is not such an easy task with the huge amount of bluetooth stereo audio available that are competing for your wallet – we tried to make this task easier for you by selecting out top 10 (And extended top 30) of the best bluetooth stereo audio money can buy.
How did we came up with our list for the best bluetooth stereo audio? we took into account all the different factors such as price, review score, overall rating score, specs and more. if you think we missed something – please contact us and we will look into it
Best bluetooth stereo audio Top 10 pick
Last update on 2018-06-16 / Affiliate links / Images from Amazon Product Advertising API - More info
bluetooth stereo audio Best extended Pick
- Car CD player with bluetooth (Make and receive calls, Play and control music and apps like Spotify / Pandora wirelessly)
- Plays Bluetooth / CD / USB / MP3 / WMA, AM/FM Radio, Digital Media from Smart Phones
- Single din headunit Compatible with Audio out from Smartphones and MP3 Players
- Inputs: USB / AUX. Bluetooth supported profiles- A2DP, AVRCP, HFP
- Outputs: Front & Rear Pre Amp
- Play music on your speaker system wirelessly from most any Bluetooth enabled device
- Receives music from up to 30 feet (10 meters) away so you don't need to dock your Bluetooth device
- Features Bluetooth v4.0 A2DP technology for minimal energy consumption
- Simple to use: plug, pair and play; Ships in Certified Frustration-Free Packaging
- Refer to the user manual before use
- Bluetooth Audio Adapter: Makes your speakers Bluetooth for streaming music from your smartphone or tablet
- Multipoint Bluetooth connectivity: Simultaneously pair your smartphone and tablet and stream music from either one
- Easy pairing and automatic re-pairing: Pair your device to the adapter once with a single button press and you're done
- Long-range wireless: Stream music from up to 15 meters (50 feet) away from your speakers
- Works with most speakers: Plugs into any powered PC speakers, home stereo systems and A/V receivers using RCA or 3.5 mm jacks. This product is a receiver ONLY, not a transmitter.
- Bluetooth (Make and receive calls, Play and control music and apps like Spotify / Pandora wirelessly)
- Plays Bluetooth / USB / MP3 / WMA, AM/FM Radio, Digital Media from Smart Phones, (N0 CD / DVD)
- Compatible with Audio out from Smartphones and MP3 Players
- Inputs: USB / AUX
- Outputs: Front & Rear Pre Amp
- [Universal Compatibility] enable your high-quality speakers or home/car stereo sound system Bluetooth compatibility, to stream audio from your smartphone/tablet/PC/echo or any Bluetooth-enabled devices.
- [2x Wireless Range] extend the Bluetooth wireless range up to 20 meters (66 feet), stream your music stably from 2 times further away than other models do.
- [High-Quality Wireless Music Performance] built-in amplifier chip and CSR chip that supports Bluetooth 4.1 and A2DP v1.2, provide high-performance wireless music experience from your favourite streaming platforms, Spotify, Apple Music, pandora, and etc.
- [5-Star Driver's Choice] Auto-On/Off with Your Car, get ready for playing music in seconds; NFC Tag for Passenger Pairing, make it much easier for passenger to connect and play their own music.
- [Multipoint Technology] stay connected with 2 of your frequently used devices, seamlessly switching audio source.
- Stream music wirelessly and use your stereo as a speakerphone
- Compatible with iPhone, Android devices, Samsung Galaxy devices, and more.Half-DIN depth for easy installation
- Front AUX in allows you to playback audio from your iPod, iPad, or MP3 player
- Easily Play MP3 files from an SD card or USB flash drive
- FM Radio with 18 presets
- 90 WATT POWER: The Pyle Dual Channel Audio Amplifier gives your entertainment or PA system a boost! Offers low distortion w/ acoustically accurate audio reproduction. Supports speakers w/ 4-8 ohm impedance allows you to enjoy high quality audio
- BLUETOOTH CONNECTIVITY: The small professional integrated indoor stereo receiver is equipped with Bluetooth wireless music streaming. Works with today's latest devices including smartphones, tablets, laptops, computers w/ hassle-free receiver pairing
- INPUT SELECTOR: It features Bluetooth and AUX/MP3 switch button which allows you to select which input you are going to use. Push the button all the way down to use your Bluetooth enabled devices and release the button to use AUX/MP3 devices
- 3 INPUTS: The professional class-T amp supports various external devices. Connect android phone, iPhone, iPod, MP3 to the 3.5mm jack input to enjoy acoustic amplified sound w/ the speaker. It also has RCA, AUX, MIC input
- EQ CONTROLS: This multi purpose portable 2-channel compact home theater digital stereo receiver box features crisp buttons and rotary knob controls for audio adjustment. It also has a blue LED volume knob which also serves as a power indicator
- Bluetooth head unit lets you play and control music and apps like Spotify/Pandora wirelessly
- MAX Power: 50 Watts x 4 Channels - Balance/Fader/Bass/Treble and Preset builtin EQ
- Plays USB, MP3, WMA, FM/AM Radio, and Smart Phones (No CD or DVD Player)
- Car stereo receiver Compatible with Audio out from Smartphones and MP3 Players
- Inputs: USB and Aux
- UNIVERSAL COMPATIBILITY: The Car Bluetooth Receiver works with smartphones iPhone, iPad, iPod, Tablet and more；Supporting AUX output and input, work with Micro SD, TF card or MP3, MP4 players via 3.5mm audio jack.
- HIGN PERFORMANCE: Support A2DP, achieve the stereo music lossless transfer to your car speaker. Built-in microphone feature can offers your hands free talking and wonderful music.
- HUMANIZED DESIGN: 1.44inch LED screen display can show current voltage of the storage battery of your car, the name of songs or caller ID, connect information, also FM channel and volume.
- CHARGING STATION：With an universal USB port, charging your cellphones or other devices as car charger. Such as apple iPhone 7 6 6S Plus；Android Smartphones, Power Bank etc.
- EASY TO USE: Just plug the Otium best Bluetooth FM Transmitter in the car cigarette lighter, control it and the car radio at the same frequency (frequency range from 87.5 to 108 Mhz). Then let your phone/audio player connects this FM music gear via bluetooth/audio line.
- Advanced circuitry design
- Bluetooth to your favorite streaming music services
- 40 station FM/AM preset Tuning
- Brushed aluminum finish and simplistic design
- Speaker selector for two systems
- 164FT LONG RANGE: Utilizing Class 1 Bluetooth technology and an optimized antenna design, the Avantree Oasis can achieve a range of up to 164' in open air line-of-sight conditions and up to 50-70' indoors. NOTE: Operation range can be affected by physical obstructions (walls, people, etc.), wireless interference (Wi-Fi routers, Wireless TV adapters etc.) and also depends on receiving device (e.g. TWS earbuds and compact devices with short internal antennae may only achieve a limited range).
- AUDIO HUB FOR HOME ENTERTAINMENT: Use the Avantree Oasis as a Bluetooth TRANSMITTER to Bluetooth-enable your TV, AV Receiver, Radio and other home audio source devices to stream music to your Bluetooth headphones or speakers. Or use it as a Bluetooth RECEIVER, to Bluetooth-enable your home stereo or AV Receiver and wirelessly stream music from your cellphone or PC. Convenient Bypass feature allows you to use as a pass-through HUB when you prefer to switch to a conventional wired connection.
- AUX & OPTICAL: Supports both analog (RCA / 3.5mm aux audio) and digital (optical) input and output! NOTE: Please set your TV audio settings to PCM format as the Oasis doesn't support Dolby / DTS format when using optical mode.
- NO LIP-SYNC DELAY: Uses the aptX Low Latency codec to virtually eliminate audio-visual lag making the Oasis an ideal choice for watching movies and playing video games. (NOTE: To achieve low latency (<40ms delay) your receiving device (headphones / speakers) must also support aptX Low Latency otherwise the connection may experience a 70-220ms delay. For a full list of supported devices please visit www.aptx.com)
- IMPORTANT NOTICE: LA-based support 800 232 2078 or email with <24H response time. 1) Low Latency is NOT supported in Dual Link mode (Recommend Avantree Audikast for dual link) 2) Dual Link works best for same brand/model of headphones. Conditions in which Dual Link may not work as well - 2 speakers, 1 headphone + 1 speaker, 2 different brands/models of headphones. Suggest to use with Avantree Audition Pro. [Contact support if advice/help needed].
- UGREEN 3.5mm Male to Male Audio Cable 90 Degree Right Angle can easily connect any of your 3.5mm audio port equipped iPod, iPhone, iPad, smartphone, Mp3 player or tablets to your car, portable wireless bluetooth speakers or home stereo, compatible with any digital devices with standard 3.5mm jack audio, like Beats Headphones, iPhone, iPods, Samung Galaxy, Laptop, Tablets, MP3 players, Cell Phones, Car/Home aux stereo, speaker etc.
- Flexible Right Angle Design: This stereo audio cable features a right angle stereo audio connector to a straight stereo connector. Ideal for tight spaces such as behind cupboards or hard to reach areas where a normal straight connector is unavailable.
- High Quality Oxygen-free copper: 3.5mm male to male stereo audio cable is made of Oxygen-free copper, ensuring high fidelity sound quality and providing maximum's conductivity and durability.
- 24K gold contacts for optimal signal transfer and corrosion resistance. Gold Plated connector provide excellent strain relief for durable use.
- Package Content: Right-angle 3.5mm Male to Male Aux Audio Cable x1
- Super awesome audio transponder: a dual purpose receive and transmit Bluetooth signal, able to turn your old Stereo sound system/amplifier into a Bluetooth unit and also can be used for your Headphones or anything that receive sound signal, makes listening music wirelessly
- Easy connection, No need app or drivers, also has automatic memory connected function, more convenient and easier; compatible with Android/iOS system phones and pad, and all Bluetooth audio devices
- Supported Bluetooth profiles: hfp, hsp, a2dp, avrcp, and spp; Bluetooth distance: 33 ft / 10M, built-in enhanced signal transmission circuit makes the connection more Stable and faster
- Simple one-button switch to shift between transmitter) and receiver(rx) mode; built-in aec and anc echo cancellation gives you Pure Stereo
- With built-in Lithium battery, support 300mA fast charge and has over-discharge protection; you can use this while simultaneously charging, never be troubled when the battery runs D or if you forget to charge it
- Bluetooth Hands Free (Make and receive calls), Bluetooth Audio Streaming (Play and control music and apps like Spotify / Pandora wirelessly)
- Plays Bluetooth / USB / MP3 AM/FM Radio, Digital Media from Smart Phones
- Inputs: USB Audio / USB Charging / AUX
- Outputs: Front & Rear Pre Amp, Tuner Preset: 18 FM / 12 AM
- Wireless Remote, Multi Color Illuminations, Switchable US & Europe Tuner Frequencies
- Built-in Bluetooth Media Receiver and Front USB and AUX Input.
- Android Compatible-MSC/AOA2.0
- MP3, WMA, WAV via USB
- Compact Chassis Design
- Dual Bluetooth connection lets you connect two smartphones simultaneously
- Voice control with Siri eyes free and song pal, Output Power: 55 W.Audio level adjustment : Yes (-6dB - +6dB)
- High-power amplifier delivers clear, natural-sounding audio
- Two-zone illuminator can match your car's interior colors
- Aoa 2.0 compatible USB terminal lets you connect music players and smartphones
- Pioneer AVH-X390BS in-dash receiver
- Power output: peak: 50 watts x 4 channels/ RMS: 14 watts x 4 channels
- Mixtrax blends songs together dj-style
- Time alignment optimizes music for where you're sitting in the vehicle
- CD text information display: MP3 ID3 tag display (title/artist/album)
- DOUBLE DIN DASHBOARD: The car radio receiver features a universal standard double-din size that ensures compatibility with a wide range of vehicle makes and models, in addition to being loaded with plenty of today's latest audio and video features.
- HANDS FREE TALKING: The car audio radio bluetooth receiver & microphone help to keep your eyes on the road & hands on the wheel.
- WIRELESS MUSIC STREAMING: The car stereo receiver features hassle-free setup and its simple smartphone pairing works with today's latest devices for instant playback.
- BACKUP CAMERA & VIDEO SUPPORT: The wireless car stereo receiver ensures an additional line of safety on the road with a rear camera and parking video connector jack.
- CONNECT & STREAM MORE AUDIO: Additional car audio stereo receiver system features include USB & micro SD memory card readers, aux (3.5mm) jack, video backup camera support, rear panel RCA connectors, all designed to add audio & video comfort in your car.
- Make your Car AUX audio sytem and Home Theater AV HiFi Surrounding system become bluetooth compatible, get music from Bluetooth enable device such as iPhone, iPad, iPod, HTC Samsung Smart cellphone or Bluetooth PC, Laptop.
- Simply connect this bluetooth audio receiver to your line-in or auxiliary input on your speakers, pair it to your Bluetooth enabled device, and enjoy the wireless music revolution.
- Whether you want Bluetooth convenience in your car, through your home-theater system, in your kitchen, bathroom, or bedroom, etc. Simple operation, 3.5mm Male to Male Audio Connector or 3.5mm Male to Male Audio Cable to connect the speakers and the receiver.
- igh-performance AMP chip, can push the headset, and high-power speaker, applicable to all types of speakers. Powerful bluetooth IC, More stronger compatibility. Powered by built-in rechargeable li-ion battery via mini USB port, long working time and low consumption. (Mini USB cable included).
- LONG RANGE AUDIO STREAMING: The HomeSpot Long Range Bluetooth Audio Receiver has a range of 75m /250ft when connected with iPhone 6 / 6S in-house; Control the music from your phone from almost anywhere in your house or even the yard. Equipped with the most advanced & reliable Bluetooth 4.2 technology (backward compatible to 4.1 / 4.0 / 3.0 / 2.1) for faster & more stable connectivity, with high-quality digital audio and DSP processing powered by Qualcomm CSR8670.
- CERTIFIED WITH APTX & APTX LOW LATENCY: HomeSpot Long Range Bluetooth Audio Receiver is certified with Qualcomm® (previous CSR) aptXTM and aptXTM Low Latency audio. Enjoy CD-quality sound wirelessly over Bluetooth connections with aptX-source devices like TVs, phones or tablets; with aptX Low Latency, you can now watch video while listening to wireless audio without any noticeable audio delay.
- INSTANT AUTO RECONNECT & MULTIPOINT CONNECTIONS: The HomeSpot Long Range Bluetooth Receiver can be connected to two mobile devices at the same time; Less time wasted on pairing and connection, just turn it on and it will quickly auto-reconnect to last paired devices.
- VERSATILE USAGE: To achieve optimal high-definition sound quality, the HomeSpot Long Range Bluetooth Audio Receiver offers several ways to connect to your home stereo system or stand-alone speakers, including Toslink optical (PCM only), coaxial SPDIF digital (PCM only), and a traditional 3.5-millimeter aux and 3.5mm to RCA connection.
- LED INDICATORS: Easy-to-understand intuitive LED light for aptX Low Latency, aptX, SBC and status mode.
- Power output: peak: 50 watts x 4 channels/ RMS: 14 watts x 4 channels
- Theft-deterrent, detachable face plate
- Compatible with Apple iPhone 6/6+ and iOS 8 software
- Built-in Bluetooth technology for hands-free talking and audio streaming
- CEA-2006 Compliant amplifier
- ✔TRANSMITTER & RECEIVER DUAL MODE: Upgraded lightweight 2-in-1 Bluetooth V4.1 transmitter and receiver; able to use as a transmitter or receiver; can pair with two headphones / speakers at once.
- ✔OPTICAL & 3.5mm: You get maximum flexibility with support for both optical (TOSLINK) digital and 3.5mm (AUX and RCA), both input and output are supported. Hassle-free setup makes it easy to enjoy wireless audio at home or on the go. ✔PACKAGING CONTENT: 1 x GA-BA08 Bluetooth® Transmitter & Receiver Adapter, 1 x Micro USB cable, 1 x 3.5mm auxiliary to RCA cable, 1 x 3.5mm auxiliary cable, 1 x Digital optical audio toslink cable, 1 x User manual.
- ✔INSTANT SOUND: Enjoy a latency lower than 98% of other devices with aptX Low Latency technology; end-to-end lag time is reduced up to 30 milliseconds, both input and output are supported, so you can watch TV / Movie / Video and listen to high-clarity sound in perfect synchronization.
- ✔CONSTANT STREAMING AND AUTOMATIC RE-PAIRING: Internal battery provides up to 15 hours of usage and fully charged within 2 hours, supports charging and streaming at the same time, and automatically re-pairing with existing paired devices. ✔STREAM WIRELESSLY: keep your old stereo or wired headphone alive with new Bluetooth wireless connection, pair with smart phone or tablet from up to 33 feet away, and enjoy great music cable-free.
- ✔100% SATISFACTION GUARANTEE and 2 YEARS WARRANTY - The 2:1 Bluetooth Receiver Transmitter comes with a 100% Satisfaction Guarantee. Gold Armour is dedicated to address any product/service issues and is committed to delivering the best experience for all buyers. 2 YEARS WARRANTY included by Gold Armour
- 【164FT LONG RANGE】With Class 1 Bluetooth technology, the 1Mii Bluetooth receiver can achieve a range of up to 164ft (50m) line-of-sight in open air and up to 50-70ft (20-30m) indoors.
- 【Hi-Fi SOUND WITH 3D AUDIO】It features CSR Bluetooth 4.2 chip to ensure high fidelity transmission of Bluetooth audio signal for music streaming to those speakers or home stereo systems that doesn't have the capability. It also supports aptx and aptX Low Latency (aptx-LL). And the 3D audio can be switched on or off by pressing the "3D" button on the Bluetooth audio receiver. The green LED will be on when switched to 3D audio.
- 【POWER ON AND RECONNECT AUTOMATICALLY】When plugged into a power outlet, the Hi-Fi Bluetooth audio receiver can power on automatically and reconnect with the previously paired device.
- 【EASY SETUP, EASY TO USE】Easy plug, pair and play. This updated unit comes with a USB power adapter. Plug into computer speakers, home stereo systems or other speaker systems via the 3.5 mm or RCA cable, then pair with the Bluetooth audio devices such as smartphones or tablet. After that, you can enjoy the music. This product is a receiver only, NOT a transmitter.
- 【WORKS WITH VOICE COMMANDS】Connect this Bluetooth adapter to your speaker via a 3.5mm jack or RCA cable, pair the receiver with your Echo via Bluetooth on the Alexa app, it is easy to control your music with voice commands. Please make sure to use the audio cable to connect the Bluetooth receiver with your speaker, not with the Echo.
- 800 x 400 resolution, clear-resistive touchscreen, 24-bit true color panel, display & color customization
- DOES NOT PLAY CD'S OR DVDS
- Android music support automatically recognizes Android smartphone as a music storage Device with music accessible via optional USB cable
- Includes wiring harness, USB extension cable, Bluetooth microphone & manual
- Super Music Quality: Using CRS audio processing, the sound quality is clear and bright, showing the HIFI stereo field, capturing music details. This Bluetooth headset find a balance between comfortable sound for music and clear human voice for phone calls. You can either enjoy Hi-Fi music while sporting or make a hand-free call during driving.
- Small and Comfortable Design: Adopt high quality soft material and ergonomic design, this wireless headphone will make your phone call and music time comfortable. Light weight, anti-lost and sweatproof allowing running, jogging, and high intensity activities to be enjoyable.
- Long Music/Talking Time and Standby time: Each earbud builds in 75mAh Lithium Polymer Battery(Full charge about 40 mins), you could enjoy up to 5-6 hours Talking/Play time, up to 70 hours standby time. The capacity of storage case is 650mAh.
- Bluetooth V4.2+EDR Technology- Compatible with almost all Bluetooth-enabled devices. Instantly connected to your smartphone or tablet from up to 33 feet away. You will never worry about wire tangles while on wireless earphones as they use no wire connections at all.
- Portable Charging Case, Easy to charge: Magnetic inductive charging, no need for a charging cable, really nice to store and carry.
- ▼ Built-in Bluetooth and microphone, supports hands-free calls and audio streaming with your smart devices for safe driving.
- ▼ Unique design with 2 circular LCD screens for showing more information.
- ▼ Single din vesion, fits most vehicle types.With 2 built-in USB slots, one for charging and the other for music.
- ▼ High-quality digital FM Radio with 18 memory stations.(Frequency: 87.5-107.90 MHz)
- ▼ Plays Bluetooth/USB/TF/MP3/WMA/FM,Compatible with audio out from smartphones and MP3 players
- 【Built-in Bluetooth Function】With your Bluetooth Wireless technology you will easily be able to pair with the vast majority of Bluetooth devices allowing you to make and receive all your calls Hands Free.
- 【USB&MP3 Playback】You have a variety of options to listen to your favorite music,either by your usb port which also charges your device.MP3 player and FM radio stations with 18 stations.You can keeps all your favorite songs in SD card.
- 【Nice Appearance Design】It featuring knob button,which making volume adjustment more convenient and quicker.It is compact design and fashion appearance,popular among people from far and near.
- 【Purchase with Confidence】Max Power Output: 60 Watts x 4. Input voltage: DC 12V .Together with 30 Days Money Back, One Year Guarantee and Friendly, Easy-to-reach Support.If you are not satisfied with this item,please feel free to contact us,this is the fastest way to get your problem out.
- 【Perfect for music enjoyment】This bluetooth car stereo is perfectly designed for you to listen to music everywhere and whenever you want. It also supports the charging of all kinds of digital products through USB interfaces.
- ♪Bluetooth Supported♪-- The car stereo come with Bluetooth function and microphone, connecting with your phone via Bluetooth, then you can play music, support hands-free calls, making you convenient to receive calls and safe to drive.
- ♪Support USB/SD Card Playing♪-- Support vast USB/SD storage equipment, and you can download songs into the storage equipment to play, and the receiver with Full Function Remote Control, which is very easy and convenient. In addition, support the charging of all kinds of digital products with USB interfaces.
- ♪FM Radio Function♪-- FM radio with high-quality digital stereo, which can search channel in full- automatic way, can preset 18 radio stations (Radio frequency: 87.5-108MHz).
- ♪AUX Function and Indication of Shutdown Time♪-- Support external AUX(3.5mm plug) to output into the audio, such as navigation, MP3, MP4, MP5, mobile phone audio and so on. The stereo screen indicate time when the phone is shutdown, which is safe and convenient with no need to see time with mobile phone.
- ♪Confident Purchase♪-- Max Power Output: 60 Watts x 4. Input voltage: DC 12V (Can not be used on a 24v truck). Dansrue warrant this item 12 MONTHS and 30 Days of easy returns from date of the original purchase for manufacturer defects. If the item fails due to a manufacturing defect, please contact seller directly to initiate return and warranty process.
Last update on 2018-06-16 / Affiliate links / Images from Amazon Product Advertising API - More info
Is it safe buying bluetooth stereo audio online?
As someone who does most of his shopping online – I don’t see any reason that buying a bluetooth stereo audio should be any different. just the fact that you go over so many reviews of other shoppers is such a great benefit. and You end up with a shower head that doesn’t meet your exceptions you can always send it back for a refund.
What is the refund policy when buying a bluetooth stereo audio?
Amazon have a great refund policy if there anything wrong with your new bluetooth stereo audio buy in any case we suggest you read carefully the guaranty offered by each specific merchant and make a smart buying decision. as a general rule you can buy with confidence at the Amazon market place.
Is it a wise idea buying bluetooth stereo audio online?
Personally I do most of my shopping online and buying bluetooth stereo audio is no difference to me. it’s so easy seeing all the different reviews, comparing different products and making a wise buying decision.
What is the minimum time of warranty you recommended when buying a new bluetooth stereo audio?
We like to go with a minimum of 2 years warranty when buying a new bluetooth stereo audio. there is really no need to for a life time warranty as with any product there is some tear&ware and it’s ok to replace a bluetooth stereo audio.
What should I pay attention to when comparing bluetooth stereo audio models?
One crucial thing is to compare and check what bluetooth stereo audio fits your own personal budget. you shouldn’t go into financial stress so try and find a bluetooth stereo audio that fits your budget for it. you should also make sure it will fit your own personal and specific needs.
What to pay attention to when buying a new bluetooth stereo audio?
Good things about buying a new bluetooth stereo audio on Amazon is that you can look and compare reviews of shoppers just like you that already tried using the product.we highly recommended you take a close look for the reviews and see if this bluetooth stereo audio fit your specific needs.
What factors you took into account when making the best bluetooth stereo audio list?
Main factor we took into account is the overall rating score and reviews for the bluetooth stereo audio. looking at real customers reviews is a huge advantage when shopping online as appose to buying from a street store when you can’t get any customer feedback. other then that we looked into price to value ratio on any specific bluetooth stereo audio and overall brand trust.
How did you make this bluetooth stereo audio best list?
we looked into many different factors when listing our top bluetooth stereo audio. one crucial factor was comparing the price to value aspect. how much exactly we are getting for our money when buying this specific bluetooth stereo audio. that was a big one. we also looked into various other factors, such as review score, features, and comparing all the bluetooth stereo audio with each other.