Buy used: $19.99
Get Fast, Free Shipping with Amazon Prime
FREE delivery Monday, July 31 on orders shipped by Amazon over $25
Used: Acceptable | Details
Sold by TROND Official
Condition: Used: Acceptable
Have one to sell?

TROND Bluetooth Transmitter Receiver V5.0, Bluetooth Audio Transmitter, 2-in-1 Bluetooth Adapter for TV/Car/PC/ MP3/ Headphones/Home Stereo/Speaker, AptX Low Latency, Pairs 2 Devices Simultaneously

4.2 4.2 out of 5 stars 7,179 ratings

$19.99
Get Fast, Free Shipping with Amazon Prime
FREE Returns
Return this item for free
  • Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
  • Learn more about free returns.
Only 8 left in stock - order soon
BT-DUO

About this item

  • 【NOTE】The product is out of stock, the stock here is 'Used Product'. Please choose the BT DUOV5.2 if you mind this.
  • TX Transmitter Mode - TROND BT-DUO transmit stereo audio wirelessly from your non-Bluetooth audio sources such as TV, MP3, CD player, PC or eBook reader to your Bluetooth-enabled headphones, speaker or receiver. Enable you enjoy high quality music wirelessly without disturbing others. Note: Bluetooth adapter without volume control button
  • RX Receiver Mode - The Bluetooth adapter offers an economical solution by turning your old wired headphones or speakers into Bluetooth headphones or speakers. Now, you can enjoy CD-like audio quality wirelessly on your home stereo or wired speaker. Charging while working, the built-in battery could support the Bluetooth adapter to work for 8-10 hours per full charge
  • Dual Stream & Multipoint - In the TX mode, TROND Bluetooth transmitter can be paired to two BT Headphones or speakers, and streams audio to both of them simultaneously. In the RX mode, it can be paired to two phones or tablets, but it can only receive the audio from one of the two paired devices. Please note that the codec would be downgraded to SBC when pairing to two BT devices simultaneously

Important information

To report an issue with this product, click here.


From the brand

Product guides and documents

Compare with similar items


TROND Bluetooth Transmitter Receiver V5.0, Bluetooth Audio Transmitter, 2-in-1 Bluetooth Adapter for TV/Car/PC/ MP3/ Headphones/Home Stereo/Speaker, AptX Low Latency, Pairs 2 Devices Simultaneously
Bluetooth Transmitter Receiver, TROND Bluetooth Adapter for TV/PC, Wireless Bluetooth Transmitter for Speakers and Home Stereo, AptX Low Latency for Both TX and RX, Pair with 2 Devices Simultaneously
Avantree Oasis Plus Bluetooth Transmitter & Receiver for TV, Easy to Install, Soundbar PassThrough, aptX Low Latency & HD Audio Adapter for 2 Headphones
Avantree Oasis B Bluetooth 5.0 Transmitter Receiver for TV, Home Stereo Speakers, Bypass Mode, Class 1 Long Range, LED Indicator, Optical AUX RCA, aptX Low Latency Audio Adapter for 2 Headphones
Avantree Orbit Bluetooth 5.0 Audio Transmitter for TV with 5.1 Surround Sound Passthrough Support, Class 1 Long Range, LED Display, Dual Link, 100% TV Compatibility Delivers No Lip sync Delay
1Mii B03Pro+ Bluetooth 5.0 Transmitter Receiver Certified LDAC for TV Home Stereo, Long Range Bluetooth Extender Wireless Audio Adapter with Screen, Optical RCA AUX 3.5mm Outputs/Inputs
Customer Rating 4.2 out of 5 stars (7179) 4.2 out of 5 stars (666) 4.2 out of 5 stars (8972) 4.2 out of 5 stars (1629) 4.4 out of 5 stars (1911) 3.9 out of 5 stars (114)
Price $19.99 $39.99 $69.99 $39.99 $99.99 $89.99
Shipping FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details FREE Shipping. Details
Sold By TROND Official TROND Official AvantreeDirect USA AvantreeDirect USA AvantreeDirect USA 1MiiDirect
Color Black Black Black Gray Gray Blue2
Connectivity Technology Wireless, Bluetooth 5.0, 3.5mm Jack / AUX / RCA Wireless, Bluetooth 5.0, AUX, RCA, Digital Optical Bluetooth 5.0, Wireless, Optical, AUX, RCA Bluetooth 5.0, Wireless, Optical, AUX, RCA Bluetooth 5.0, Wireless, Optical, AUX, RCA Bluetooth
Item Dimensions 1.8 x 1.3 x 0.38 inches 2.36 x 2.36 x 0.83 inches 4.49 x 2.95 x 1.18 inches 4.49 x 2.95 x 1.18 inches 3.94 x 3.35 x 3.15 inches 4.33 x 2.76 x 0.79 inches
Item Weight 0.50 ounces 2.25 ounces 3.17 ounces 3.17 ounces 7.97 ounces
Output Wattage 5 watts 90 watts 5 watts 5 watts

What's in the box

  • 1 × BT-DUO Bluetooth transmitter eqiupping with CSR8670 chipset
  • 1 × USB to micro usb charging cable (80cm)
  • 1 × 3.5mm male to 3.5mm male audio cable (50cm)
  • 1 × 3.5mm male to 3.5mm male aluminum pin
  • 1 × 3.5mm female to rca male audio cable (20cm)

  • Product Description

    Bluetooth transmitter Bluetooth Transmitter Digital Optical Adapter bluetooth transmitter and adapter
    Bluetooth V5.2 Transmitter & Receiver Bluetooth Digital Optical Adapter Bluetooth V5.0 Transmitter & Receiver
    Codec Supported SBC, aptX, aptX Low Latency (for both TX & RX) SBC, aptX, aptX Low Latency (for both TX & RX) SBC, aptX, aptX Low Latency (for both TX & RX)
    Audio Connection 3.5mm, RCA 3.5mm, RCA, digital optical in (TX), digital optical out (RX) 3.5mm, RCA
    Working Range 10m / 33ft 10m / 33ft 10m / 33ft
    Power/Pairing Button one MFB button one MFB button one MFB button
    Pair with Two
    2-in-i Bluetooth transmitter

    Spend Your Holidays with Your Family! Watching TV Together without Disturbing Others!

    If you and your roommates are on different schedules, then you might need this TV Bluetooth transmitter for your TV.

    TROND is the pioneer in promoting the concept of aptX Low Latency on Amazon.com. As the first model we introduced to the Amazon marketplace in early 2016, TROND BT-DUO has helped numerous customers to watch TV wirelessly without any noticeable audio delay. In recent years, we've upgraded its Bluetooth version from 4.1 to 5.0, which could provide better device compatibility.

    TX Mode: as a transmitter, BT-DUO should be connected to the audio OUT port of your non-Bluetooth audio source (TV, iPod, Nintendo Switch, CD-player, or e-Book reader), and then pair to your Bluetooth headphones or speakers such as Airpods. This way, you could watch videos, enjoy music or play games wirelessly without experiencing lip-sync issues. White/red RCA does NOT support Audio IN, only Audio OUT. If your TV does not have an audio out port please order another model: TROND BT-DUO X.

    RX Mode: as a receiver, it should be connected to the audio IN port of your wired audio device via a 3.5mm cable (wired earbuds, speaker, or car stereo), and pair to your Bluetooth-enabled smartphone, tablet, or laptop. This way, you could enjoy high-quality music wirelessly without spending more to order Bluetooth headphones or speakers.

    Please note that you can only use BT-DUO either as a transmitter or as a receiver and can't use those two modes simultaneously. Also for the Bluetooth technology, one transmitting device needs to pair with one receiving device, or vice versa. You are not supposed to pair two transmitting devices or two receiving devices together

    bluetooth transmitter for wireless headphone

    Important Pairing Instructions

    How to Pair with One?

    1. Disconnect your headphones from your phone or tablet;
    2. Switch the working mode to TX, instead of RX;
    3. Long press the MFB for 3 seconds to power it on;
    4. Quickly double-tap the MFB to activate its pairing mode till the indicator blinks red & blue alternately;
    5. Activate the pairing mode of your headphones; (To activate Airpods' pairing mode, put the Airpods (Pro) in the charging case; long-press the button on the back of the charging case, and then released it when the white light on the front started flashing)
    6. Put those two close to each other, and wait for the pairing;
    7. if successful, its LED would turn solid blue.

    How to Pair with Two?

    Dual Stream is the embedded feature of 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.

    However, the pairing steps may be too complicated for some customers to pair.

    Getting audio out of one headphone?

    BT-DUO is capable of working and charging at the same time. But rarely, you may only get audio in one earpiece when the BT-DUO works while charging. Please charge BT-DUO first, then unplug it, and then use it, so you get sound on both sides.

    PDF MANUAL?

    check the pdf manual in the ’‘PRODUCT GUIDES AND DOCUMENT’‘ section if you would like to download it.

    Specifications:

    • CSR 8670 chipet, V5.0
    • AptX LL, aptX, SBC
    • Up to 33ft / 10m working range
    • 160mAh li-polymer battery
    • Approx. 8H battery life
    • Fully charged in 2 hours
    • Size: 1.81*1.30*0.38 in
    • Net Weight: 0.51 oz
    dual link multi stream bluetooth transmittter

    Frequently Asked Questions:

    • Noticeble 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 audio delay.
    • Annoying static noise? Please do not connect its 3.5mm aux jack and USB charging port to the same audio source, as it may easily cause "ground loop noise". Please use a separate USB charger instead.
    • BT-DUO Can't pair successfully with your Bluetooth devices? Please follow the section 'Reset BT-DUO' in the user manual to reset BT-DUO in both TX and RX mode, and re-start the pairing procedures.
    • Buying 2 BT-DUO, 1 as a transmitter, the other as a receiver? This type of set-up is viable, which 'add' Bluetooth functions to 2 devices (such as a TV and a wired headphone). Connect the transmitter to a TV; Connect the receiver to a wired headphone; Pair the transmitter with the receiver, in this way, you have done the set-up! Enjoy the music with low latency (40ms) reagardsless of the codec of earphone.

    More Product Features to Explore

    Portable bluetooth transmitter

    various accessories included

    built-in rechargeable battery working while charging

    Great Thanksgiving Gifts

    TROND BT-DUO is measured at 1.81'' x 1.30'' x 0.38'' with a weight of 0.51 oz. It's only about the size of a narrow matchbox.

    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. Perfect for home, office, college, desk use; Enjoying music without disturbing your family, roommate; Beautifully wrapped in kraft paper; Gift messaged offering

    Various Accessories Included

    3.5mm aux cable (50cm). Use this long cable to connect TROND BT-DUO to your TV, and don't let TV block the Bluetooth signal.

    3.5mm Aluminum Adapter. Use this adapter to connect to your iPod, e-Book reader, or car stereo, and get away from tangling cables.

    3.5mm female to RCA male cable adapter. Please use this cable adapter when your TV or home stereo only offers the white/red RCA audio OUT ports. NOTE: White/Red RCA does NOT support Audio IN, only Audio OUT. If your TV does not have an audio out port please order another model: TROND BT-DUO X.

    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;

    160mAh Rechargeable Battery: TROND BT-DUO can provide approx. 8-hour 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.

    TROND 2-1 Bluetooth Transmitter Receiver for TV to Heapphone

    Important Remarks before Buying:

    • 3.5mm Aux or Digital Optical? In order to stream the audio from your TV, it’s very crucial to first identify which audio OUT port your TV could support (instead of any audio IN or video port). TROND BT-DUO can be connected via the 3.5mm cable. However, some LG or Samsung TVs have removed the 3.5mm aux jack and only offer the digital optical OUT port. In this case, since BT-DUO does not feature a port for digital optical cable, please order a digital to analog audio converter additionally, or order another model instead: TROND BT-DUO X;
    • AptX Low Latency Supported? In order to avoid lip-sync issues, your BT headset or speaker also needs to support the codec of aptX Low Latency. Please check with your device manufacturer to verify this. If not, the codec would be downgraded to aptX or even SBC, and you may experience the noticeable audio lag;
    • Musical Instrument? The latency of 40ms is still unacceptable for live sound monitoring. Therefore, those who plan to use it with electric piano or guitar, beware! Bluetooth technology, even with aptX Low Latency, may not suit your needs;
    • Pair with your car Bluetooth (TX)? Car Bluetooth may require entering a certain pin code in order to pair with your phone. Unlike phones, Bluetooth transmitters don't have any keypad to enter the pin code. Therefore, BT-DUO may not be able to stream the music from your iPod to your car stereo. Due to the rechargeable battery design, it cannot be powered on automatically after you start the car engine;
    • Bluetooth Receiver for Car? YES, some cars only have aux jack and have no Bluetooth function, you can use TROND BT-DUO as a Bluetooth receiver, this way, it will allow your car to have Bluetooth functions. Simply pair the Bluetooth receiver with your iPhone 11/pro and start to enjoy stereo music wirelessly. Please note the Bluetooth receiver will automatically power off if no device is paired within 6 minutes in the standby mode or the pairing mode;
    • Hands-Free Phone Calls? BT-DUO doesn't have the built-in microphone. If connected to BT-DUO as a receiver, the in-line microphone of your wired headset will be disabled. Therefore it won't be able to support any phone calls.
    • Sound cut out at lower volumes? When watching movies at lower volumes(also known as a gate), the transmitter sound may cuts out. Because when the volume is too low, the CSR chipset couldn't detect the signal and hence couldn't transmit the audio signal out. Please try to turn the TV's volume up and get better performance.
    • White/Red RCA support audio in or audio out? In TX mode, white/red RCA does NOT support Audio IN, only Audio OUT. If your TV does not have an audio out port please order another model: TROND BT-DUO X.

    Special offers and product promotions

    • Save 10% on 8AC Power Strip (Mountable) when you purchase 1 or more 8AC Power Strip (Mountable) offered by TROND Official. Here's how (restrictions apply)

    Looking for specific info?

    See questions and answers

    Product information

    Warranty & Support

    Product Warranty: For warranty information about this product, please click here

    Feedback

    TROND Bluetooth Transmitter Receiver V5.0, Bluetooth Audio Transmitter, 2-in-1 Bluetooth Adapter for TV/Car/PC/ MP3/ Headphones/Home Stereo/Speaker, AptX Low Latency, Pairs 2 Devices Simultaneously


    Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.

    Where did you see a lower price?

    URL:
    Price: ($)
    Shipping cost: ($)
    Date of the price:
    /
    /

    Store name:
    City:
    State:
    Price: ($)
    Date of the price:
    /
    /


    Please sign in to provide feedback.

    Customer reviews

    4.2 out of 5 stars
    4.2 out of 5
    7,179 global ratings

    Top reviews from the United States

    Reviewed in the United States 🇺🇸 on February 3, 2019
    Size: BT-DUOVerified Purchase
    Customer image
    Ed
    5.0 out of 5 stars Replacement & support review: A support champ
    Reviewed in the United States 🇺🇸 on February 3, 2019
    3rd update Mar 20, 2019:

    Updating my previous, original 2-star rating to 5 stars thanks to their support given and a fully functional replacement device in ~2 weeks.

    --- TL;DR ---
    My initial experience from Sep 2018 with my DUO was mixed. I didn't contacted support, and wrote my first “quick review” on Dec 2018 or Jan 2019. On Feb 2019 I got contacted by a person from support because my review.
    Since then, the support person 'greatly explained' the causes of the issue and guided through the process for getting a warranty device.
    I'm very placed with the detailed support given by him, and new replacement device works great!

    --- Device ---

    My issue from Sep 2018 while RX mode was indeed a defect on some units on the Amazon warehouse from that period, which occurred in any codec (SBC, aptX and aptX LL).

    The TX “issue” of audio fading/cutting on low volume (e.g. while playing on Nintendo Switch on low noise scenes), is normal. One must turn all the volume up on the audio source so the device can capture it, as the chip isn’t an amplifier but just a transmitter.

    Due the RX issue, I was offered replacement device. Decided to try and upgrade to the Trond DUO S. Now I can confirm the intended correct functionality of RX/TX on both devices (DUO and DUO S), and confirmed the RX firmware defect.

    Additionally, I could test pairing a DUO with a DUO S. They work amazing on aptX LL (Low Latency) which is selected automatically as it’s the best codec available on both. You can easily see and hear the difference between the standard SBC and aptX LL, the latter feeling instantaneous on audio visual feedbacks.

    After 5 months of use and having a fully functional unit...
    Re-viewed PROS:
    - Compact goodness.
    - Good battery duration, easy charging, and can be left connected.
    - Easy pairing, even multiple pairing (after you get the “trick” for pairing).
    - Lot of adapters included.
    - Long satisfaction warranty (18 months) and great support service.

    Re-viewed CONS:
    - No configurable low-battery audio signal. It can confuse you from phone alerts, etc.
    - No configurable LED.

    --- Support and warranty ---

    They are serious on their support area, as they followed me up some time latter from my original 2 stars Amazon review on all my emails until I got the issue solved (on my case a warranty applied, until I had it on my hands, even though it would need a global shipment).

    They DO respect their “18-MONTH TROND warranty” additionally from the Amazon return period, so you can buy with confidence that any defect will be followed quickly and in great detail. This was getting replied the next day and getting detailed explanations of the cause(s) of my issue along with the possible actions to take.

    Big thumbs up for Trond. They managed to stand up with the pesky support processes of many other bigger companies out there.

    --- MISC ---

    My only complaint could be their webpage. Before making my original purchase, I looked up their website and it feels empty and outdated, like if they didn’t exist nor could give any kind of quality support in case you got into issues. They deserve a newer and better site that shows and highlights their great client support.

    -------------------------------

    2nd update Feb 22, 2019:

    Their customer service contacted me regarding the issues I mentioned here, trying to help me with them by proposing a replacement thanks the 18-month warranty.
    I will try keep updating this review accordingly.

    ------------------------

    1st Original review:

    Has been some time that I got this (Sep. 2018) and have been postponing a quick review, some thoughts on this device.

    I have used a few times on various scenarios (playing on Nintendo Switch, video watching, etc., with different headphones as receivers, and different controlled sources as high end phones and laptops).

    Personal cons:
    - 1 issue as a receiver.
    The device is identified as apt-X on my phones, but the output audio is awful, sounds muffled, as phone call quality on all devices that I tried.
    This reaches the point that the Windows 10 "bells sound" sound test gets very pitchy and gets highly distorted and the very end of the last bells. I would like to provide an example of this by recording the output from the Trond when used as receiver.
    - 1 issue when transmitting.
    When transmitting, the quality is pretty good, BUT, when having low volume sounds coming from the audio source, the Trond seems to "fade" or cut-out the audio.
    Playing games on the Nintendo Switch is not enjoyable with some games that have some low-volume scenes, since those are intermittently faded or cutted-out. There is no noticeable delay at least from what I can tell (but at this point I just stopped using the Trond both as receiver and transmitter).
    (As I said, the quality is great when transmitting, but not sure if it's real aptX quality grade, my headphones don't have any indicators of what protocol is being used when receiving audio from the Trond when it's transmitting, neither Windows helps with this).

    Pros:
    - Super compact, portable.
    - Portable power of ~6 hrs or more.
    - Quicker setup as receiver.
    - Can be used always connected

    Note that I probably got a defective device but.... Anyways, I stopped using it since then (Sep. 2018). It has just a couple of days of usage. Recently I got the time use it again but as a background music receiver, as the previously mentioned issues are just annoying.
    The receiver sound quality is the dealbreaker for me.
    Maybe is normal for the price, just the aptX is there for the short delay feature of the protocol.
    Images in this review
    Customer image Customer image Customer image
    Customer imageCustomer imageCustomer image
    3 people found this helpful
    Report
    Reviewed in the United States 🇺🇸 on June 16, 2023
    Size: BT-DUOVerified Purchase
    One person found this helpful
    Report
    Reviewed in the United States 🇺🇸 on July 15, 2023
    Size: BT-DUOVerified Purchase
    Reviewed in the United States 🇺🇸 on July 14, 2017
    Size: BT-DUOVerified Purchase
    6 people found this helpful
    Report

    Top reviews from other countries

    Shanan Miller
    5.0 out of 5 stars trond
    Reviewed in Australia 🇦🇺 on December 27, 2020
    Size: BT-DUOVerified Purchase
    Crescita zero = €
    1.0 out of 5 stars Segnale acustico di notifica esagerato!!
    Reviewed in Italy 🇮🇹 on March 22, 2017
    Size: BT-DUOVerified Purchase
    Romain
    5.0 out of 5 stars Parfait pour rendre un vidéoprojecteur Bluetooth en sortie
    Reviewed in France 🇫🇷 on February 7, 2022
    Size: BT-DUOVerified Purchase
    3 people found this helpful
    Report
    STUMPY 21
    5.0 out of 5 stars Mais c’est le top !!!!
    Reviewed in France 🇫🇷 on February 6, 2022
    Size: BT-DUOVerified Purchase
    2 people found this helpful
    Report
    Remy Coconnier
    2.0 out of 5 stars Son horrible transmit CORRIGE
    Reviewed in France 🇫🇷 on November 15, 2021
    Size: BT-DUOVerified Purchase
    4 people found this helpful
    Report