Beginning Stationary Mobile receiver Bluetooth transmitter Prices Conclusion Comments (12) by Philipp // 15. 10. 2020 16: 52 Clock

Bluetooth adapters for retrofitting audio devices are available from twelve euros. We show which adapter is suitable for which application.

In order not to drown each other out when using a smartphone, television, PC and stereo system, headphones are the best solution. Wireless models with zero-latency transmission are for under 50 Euro available, more on this in the guide Bluetooth headphones with aptX to 60 Euro. But how do you get the television or stereo system to send the audio signals via Bluetooth? How do you get the audio signals wirelessly on the good old stereo system or the wired headphones?

That works comfortably using Bluetooth audio transmitters and receivers. They enable wireless transmission and are connected to the respective device with the classic jack plug or by optical cable.

Small receivers with rechargeable batteries are perfect for mobile use with wired headphones. In our overview we show suitable devices for the different purposes.

Stationary bluetooth -Receiver for systems For retrofitting a Stereo systems with Bluetooth are suitable for stationary receivers with a corresponding audio output. The codec that sender and receiver use for transmission decides the sound quality. The almost lossless audio codecs AptX or Aptx HD are suitable to keep the quality losses low. The difference to the older codecs AAC and SBC only comes into play when it comes to uncompressed music – with music streams from the Internet, the differences are practically inaudible. Another advantage of the AptX codecs is the low delay between sender and receiver.

While inexpensive models such as the Belkin music adapter only have a jack output with 3.5 mm, higher quality versions are equipped with an additional optical and / or coaxial output. Power is supplied by an external power pack.

The range of most Bluetooth receivers is around ten meters. Some models, such as the Avantree from Oasis, are better equipped and allow significantly longer distances (30 to 90 Meter). This is particularly advantageous when the playback device is not in the direct vicinity of the recipient. The Avantree adapter not only has a huge range, it can also send content at the same time. This is useful, for example, to listen to TV programs with Bluetooth headphones. The AptX Low Latency Codec is particularly important when used on a TV set. The codec ensures almost delay-free audio transmission with Bluetooth devices. Without AptX, there can be noticeable misalignments between picture and sound. The result is asynchronous lip movements.

For transmitters, it should be checked in advance whether a simultaneous connection to several end devices is possible. Only then can multiple headphones or Bluetooth speakers be addressed. Very cheap adapters usually cannot do that. The Avantree, on the other hand, fulfills this requirement.

The connection with the audio receiver is usually problem-free. Models with NFC, for example the AR 6103 from Thomson, simplify the connection between adapter and smartphone. You transfer the necessary access data wirelessly to a smartphone or tablet that is also equipped with NFC.

Mobile Bluetooth Receiver for headphones and cars To his To retrofit headphones with a 3.5 mm jack connection with a Bluetooth receiver, a receiver with an internal battery should be used. The battery life of the mobile adapter differs greatly from model to model. The very compact receivers in particular only last two to three hours. A real cross-country skier is the BoomBoom 75 from Marmitek. According to the manufacturer’s description, it lasts up to ten hours without a power supply. Adapters with USB power supply also work alternatively with a power bank.

Retrofitting wired headphones is easily possible. To use the Bluetooth receiver in the car, the radio needs an AUX input with a jack connection. If you want to supply your car with music without a corresponding connection, you need a special FM transmitter, such as the Roav SmartCharge Car Kit (test report) or the

Comsoon BT 58 N (test report).

An AUX input is required for use in the car. When used in a vehicle without its own USB power source, models with 12 V power supply. With the BR-C8, Aukey offers a suitable receiver with a jack plug. Some Bluetooth adapters use standard batteries instead of a rechargeable battery. For example, the Bluetooth audio adapter from Hama relies on inexpensive AAA batteries that are available everywhere.

Since mobile models are mostly used for headphones or, for example, in the car, a range of ten meters is normally sufficient. If you want to use the audio adapter to watch films, you should definitely pay attention to lag-free playback thanks to AptX.

Bluetooth audio transmitter To make the television fit for Bluetooth headphones or speakers, all you need is a Bluetooth transmitter. Delay-free audio transmission with AptX is essential for this combination in particular. When transmitting sound without an associated picture, the function is not so important.

While inexpensive transmitters only have a jack connection, more expensive models such as the Avantree from Oasis are also equipped with an optical input. What is really needed depends on the equipment available. Many modern TV sets do without the classic 3.5 mm cable and therefore require a transmitter with an optical or TOSLINK input.

If you don’t want to watch TV alone with your Bluetooth headphones, you should definitely use the transmitter Be dual-link capable – only then is a simultaneous connection to at least two playback devices possible. Avantree from Oasis and SV 1770 meet these requirements Requirements.

Prices a A look at the price comparison shows that there are now mainly 2-in-1 adapters with transmitter and receiver units. Bluetooth adapters with only send or receive functions are not significantly cheaper in terms of price, so we recommend one of the combination devices – at least if the dimensions are not important. The particularly compact audio adapters can usually only send or receive.

If the adapter is to work independently of a socket, a battery must be available. If you need both a transmitter and a receiver, you get matching sets, such as the Avantree Saturn Pro, with two devices (already paired in advance).

Conclusion Bluetooth audio adapters are available in many forms and with a wide variety of features. If you only want to transfer music, you can use inexpensive and very compact models. Experience has shown that these provide sufficient quality and coverage. However, there is a slight background noise and an overall lower volume in the pauses between the songs. Experience has shown that the Elegiant model, for example, does a good job.

When it comes to films To enjoy using Bluetooth headphones, you have to dig a little deeper into your pocket and buy a model with an AptX codec. Adapters with receive and send functions are hardly more expensive than devices with only one of the two functions, which is why we recommend the Avantree combination adapter from Oasis.