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2-in-1 Bluetooth Transmitter and Receiver
Ideal for Wireless Home Entertainment
Whether you’d like to stream the TV audio to your wireless headphones/speakers or make your old stereo audio system wireless, TROND Bluetooth adapter makes a perfect choice to suit all your needs. Its compact size intentionally added weight and deluxe look make it fit very well with your home audio system.
No More Lip-sync Delay
Unlike other competing adapters, TROND BT-DUO X supports the codec of aptX Low Latency in BOTH the TX & RX modes. It can effectively minimize audio latency up to 40 milliseconds, and allow you to watch video while avoiding lip-sync issues.
Various Audio Ports & Accessories Included
Some TVs only provide digital optical audio output. Besides the 3.5m AUX and RCA connection, TROND BT-DUO X also supports digital optical audio (TOSLINK) interface. Even better, it comes with all the cables & adapters needed to set up the connection.
Important Pairing Instructions
How to Pair with One?
- Disconnect your headphones from your phone or tablet;
- Switch the working mode to TX, and then decide whether you should use "AUX" or "SPDIF";
- Long press the MFB for 3 seconds to power it on, the LED indicator flashes blue twice quickly;
- Quickly double tap the MFB to activate its pairing mode till the indicator blinks red & blue alternately;
- Activate the pairing mode of your headphones;
- Put those two close to each other, and wait for the pairing. If successful, its LED would turn solid blue;
- Connect the Bluetooth transmitter to your TV, iPod ,or other devices via the 3.5mm Aux cable/3.5mm to RCA audio adapter/the TOSLINK cable, and start enjoying the wireless audio streaming.
How to Pair with Two?
Dual Stream is the embedded feature of the CSR 8670 chipset, which allows the transmitter to pair with two devices simultaneously. Please CLOSELY follow the instruction included in the user manual to pair with two.
How to Re-Pair & Reset?
For better re-pairing, please always remember to power on the transmitter FIRST before turning on your headphones. And DO NOT re-activate the pairing mode for either the transmitter or the headphones.
If the pairing or re-pairing is not successful, please try to refer to the FAQ in the user manual to RESET TROND BT-DUO X by switching working modes.
Specifications:
- Bluetooth V5.0, CSR 8670 chipet, A2DP
- AptX LL, aptX, SBC
- Up to 33ft / 10m working range
- 350mAh li-polymer battery
- Approx. 15H (Aux); 12H (SPDIF) battery life
- Fully charged in 2 hours
- Size: 2.36 x 2.36 x 0.83 in
- Net Weight: 2.25 oz
Frequently Asked Questions:
- Noticeable audio lag? Please check whether your device supports aptX Low Latency. Popular headphones, such as Bose QC35 or Beats Solo3, don't really support it, and you may experience an audio delay.
- Volume too low? The TROND default setting is to retain 100% of the audio volume it receives from the audio source. Please find out whether you could adjust the volume on your TV or Bluetooth headphones.
- Get frozen? If BT-DUO X gets stuck and all its buttons are not responding, please press & hold the MFB, and meanwhile plug in an external USB charger to shut it down. After that, simply power it back on to use it properly.
- PDF MANUAL? check the pdf manual in the ’‘PRODUCT GUIDES AND DOCUMENT’‘ section if you would like to download it.
- Audio In/Component In Source?: the BT-DUO X will not work when it is inserted into the any audio IN/component IN ports. The proper way to setup is to insert the BT-DUO X into the audio out ports.
More Product Features to Explore
Design for Home Entertainment
TROND bluetooth adapter is measured at 2.36 x 2.36 x 0.83 inches with a weight of 2.25 oz. Palm-size and extra weight.
Meanwhile, it features the most premium CSR8670 Bluetooth V5.0 chipset, which makes it a very handy device for those who want to get away from wires.
Upgraded with Smart Codec Indicator
TROND bluetooth transmitter has been upgraded with a smart codec indicator and can tell you which codec is in place, by displaying different LED statuses after the music starts playing.
- SBC - blue LED indicator blinks once every 10 seconds;
- aptX - blue LED indicator blinks twice every 10 seconds;
- aptX Low Latency - blue LED indicator blinks 3 times every 10 seconds
Super Long Working Time
DC Mode: Connect to a quality USB charger, and stream the audio as long as you can. You can charge it while it's working;
350mAh Rechargeable Battery: TROND BT-DUO X can provide approx. 15H(Aux)/12H(SPDIF) battery life, and can be fully recharged within approx. 2 hours. It needs to be recharged ASAP when the LED keeps flashing red. The LED turns steady red while being recharged, and turns off once fully charged.
Richard S. Smith
2025-07-27 11:09:57
I did a lot of research before I bought this. I had a very specific use case for it. I wanted to rebroadcast my sound output to 6 different Bose Soundtouch wireless speakers. And it's wonderful for that.Here were the issues: - Bose Soundtouch devices will not rebroadcast through the aux port on the device, only bluetooth connections. It's limitation of Bose Soundtouch devices. - I wanted only sound to be picked off, therefore transmitted. - I have optical audio ports on the TVs. - I have 6 Bose Soundtouch devices to connect all at once because I wanted to be able to listen to a show, news, music, sports, while doing other things around the house and even outside. - I wanted to be able to easily disconnect the TV audio and play it through a normal sound system when the delay (1 to 2 seconds) from the sound rebroadcast was not acceptable when actually watching the TV. - I wanted the bluetooth disconnect to not effect other wireless usage of the 6 Soundtouch speakers when not using Bluetooth audio feed.With the help of this device, I have met all my above criterion. I am able to use the wireless broadcast of sound through the speakers located in various places around the house and outside. I am able to use the optical audio cable that comes with Trond bluetooth transmitter and connect it to the TV. TV audio also still works normally. I am then able to hit the button on top of the bluetooth transmitter and connect to the Bose speakers to rebroadcast. I am able to easily turn it back off, holding the button on top for about a second, and use the Bose system normally.Super simple and functional. Reconnecting bluetooth has not been a problem, ever. No more than a button press has been required. I have never found a good use of the optical audio port on my flat screens until now. My stereo is too old for that sort of connection.I rarely use the battery so I can't comment on that. I leave the device plugged in all the time. Also, I have moved it about 25 ft away and the sound was never interrupted. I suspect your mileage may vary on the distance given interference conditions in your own house. But I'm quite pleased with this performance for a bluetooth device.
Bart
2025-07-26 14:38:45
Awesome size, nicely designed unit.Some pointers/remarks.The battery is extraneous for my use: attached to a home sound system, it would be best to turn off and on with USB power.Switching between modes of receiving audio and transmitting audio requires re-pairing of devices. It would be better if known TX-parings were kept while in RX mode and vice-versa.Two-device output was a nice surprise!
Customer
2025-07-03 15:14:38
This bt transmitter works awesome compared to many others, it is portable and light weight. The battery last a long time also makes it very portable for enjoyment anywhere !!!!!! I use it with my trond headphones that are 5 years old and still sound great !!!!! This transmitter/ receiver was the best one i have tried out of 5 that never worked right, it can hook up to digital fiber optic or analog stereo 3.5mm head phone jack. The range is 100ft plus. I just can't tell you how much i love this transmitter i use it every day listening to music while i sand wood projects !!!!!!!!
PositiveLogic
2025-06-16 11:29:01
I have a Roland keyboard in our living room. Besides playing it as a musical instrument, the keyboard also can play songs via midi files, sort of like a player piano. If you find the right music, you can simulate a piano bar sort of atmosphere.I thought it would be kind of interesting to hook up the piano with an external speaker that is quite bigger and more full sounding than the built in speakers. I chose this Bluetooth transmitter because I have had positive experiences in the past with maker, i.e. TROND.I glanced at the instructions, but being that I have dozens of devices that work with Bluetooth, I decided to just "figure it out." Moreover, it turned out to be pretty easy. I used the accompanying USB cable and plugged it into my keyboard, much the same way that I can plug in a wired headset or wired external speaker. Next, I paired the transmitter to my NYNE Bass speaker, which is phenomenal, btw.It worked great. We got a nice full sound, and once speaker was hidden, you could swear you at some piano lounge at a swank hotel.Next, I tried putting the speaker outside next to pool. The Bluetooth signal had to go through a wall. However, in terms of proximity, the piano and the Bose speaker or only separated by 5 feet or so. That worked beautifully as well, as long we kept the speaker within about 5 feet of the actual physical location of the piano. Now, all we need is the summer.The limitation, of course, is that it needs to be playing from a midi file. I did try playing the piano, but there is too much of a delay to make that anything but awkward.But for what box is designed for, it is capable of playing your music from a device that doesn't have any built-in Bluetooth.
Mike at Night
2025-05-23 16:59:41
We have three of these in our home, each connected to a smart TV, and paired with the Trond low latency Bluetooth headphones. Purchased for viewing movies on blu-ray and via streaming services.PROS:- Nice design: small and discreet, well built, very cool form factor.- Low latency: perfect for movies at home. Zero discernible lag. It all looks/sounds perfectly synced.- Ease of set up: nothing complicated, easy to connect to tv, and to pair with a set of compatible headphones.- Great value: one of the better priced low latency units out there.- Customer service: excellent. Answered a question I had very quickly, and then initiated email follow up with me days later to make sure all was working properly. That follow up was a very nice surprise and much appreciated!CONS:- None for my uses. I've only used these as transmitters thus far, paired with the Trond Bluetooth low latency headphones. I have never tried them as receivers so I can't comment on that application.Overall, very pleased with the multiple purchases we've made of these transceivers!
Bommel
2025-05-21 17:53:52
Ich habe den Transmitter zusammen mit dem Trond Receiver V4.2 erworben, um das Signal des Kopfhörerausgangs vom Fernseher zu übertragen. Wenn die Lautsprecher des Fernsehers ausgeschaltet (oder sehr leise gestellt) sind, funktioniert die Sache mit offenen oder In-ear-Kopfhörern einwandfrei. Das Tonsignal scheint lippensynchron übertragen zu werden, die geringe Latenzzeit wird nicht wirklich bemerkt. Anders, wenn die Lautsprecher des Fernsehers zusätzlich mit Zimmerlautstärke eingeschaltet werden. Dann ist ein deutlicher Unterschied im Eintreffen der Tonsignale im Ohr festzustellen : Zuerst hört man den Ton des Fernsehers, unmittelbar darauf den Ton des Kopfhörers. Fernzusehen unter diesen Umständen ist nicht möglich. Abhilfe schafft nur ein geschlossener Over-ear-Kopfhörer wie z.B. der Bose QC35, der der Ton des Fernseherlautsprechers für den Kopfhörerträger ausblendet. Weil dieses Problem aber nicht dem Transmitter anzulasten ist (der Hersteller weist auf die 30-40 msec Latenzzeit ausdrücklich hin) und die Qualität der übertragenen Signale einwandfrei ist, 5 Sterne von mir. Der Receiver funktioniert am Line-in-Eingang einer älteren vorhandenen Stereo-Anlage einwandfrei, die von einem Handy übertragene Musik wird klar und verzerrungsfrei wiedergegeben. Darum auch dafür 5 Sterne.
Robert
2025-04-26 14:04:40
funciona correctamente, no es muy facil de sincronizar, pero una vez sincronizado, toda esta bien
Customer
2025-03-27 15:51:05
I bought this item after recommendation to be able to hear the TV during lockdown as I am hard of hearing and am awaiting hearing aids. I needed something that would transmit to existing headphones, and allow the TV to continue to transmit audio through the TV speakers so my partner could hear normally. This item does exactly what I need it to, and worked very easily straight out of the box. The instructions are clear and easy to follow. It was also good value at £30. I can recommend this product to anyone struggling to hear the TV with your friends or family. Just make sure you have the correct headphones to avoid the sound lag and you follow the instructions for the correct set up of your TV sound settings.
Francesco Portone
2025-01-26 13:55:38
Ne ho presi due, uno da usare come trasmittente e l'altro come ricevitore. Intanto sono rimasto sorpreso dalle dimensioni davvero minute, che permettono di piazzarli ovunque. Molto facile e rapido l'abbinamento, dispone di uscita AUX (jack da 3,5 classico) e coassiale S/PDIF (e già questo lo differenzia da altri prodotti economici in commercio). Li ho comprati non per la musica in streaming, ma per "trasportare" l'audio dei film o filmati su un piccolo impianto hi-fi. E fanno egregiamente il loro lavoro. Il chipset Qualcomm CSR8670 ha una resa molto buona, sia per quanto riguarda la qualità dell'audio decodificato (DAC) sia per l'effettiva BASSA LATENZA della trasmissione (nei film che prevedevano l'audio in formato PCM 16/44 a 1.411 kbps non ho notato alcun ritardo rispetto al video; in effetti il ritardo dovrebbe essere di circa 40 millisecondi, quindi impercettibile). Provato anche Youtube e pure in quel caso l'audio è perfettamente sincronizzato col video. Naturalmente lo streaming audio non presenta alcuna difficoltà , a maggior ragione con gli MP3 che sono "leggeri". Per limiti della tecnologia bluetooth non credo si possa usare per formati multicanale come AC3 e DTS ad alta frequenza di campionamento. Ottima la portata, ad oltre 10 metri di distanza, e con diverse pareti divisorie, il segnale è stabile. Non ho ancora testato la durata della batteria ma credo sarà in linea con la qualità del prodotto. Nella confezione ci sono tutti i cavi che vi potranno occorrere. Per il prezzo pagato (25,99) è un prodotto assolutamente eccellente.
Tigrou83
2025-01-25 15:26:38
Je suis ravi, devenu très pratique à l'usage. L'optique vers Blutooth donne un son vraiment exceptionnel. Bon achat et utilisation super simple, quotidienne. On laisse appuyer 3 secondes, çà paire, et le son est très bon.
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