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 at early 2016, TROND BT-DUO has helped numerous customers to watch TV wirelessly without any noticeable audio delay. In Q4/2018, 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, CD-player, or e-Book reader), and then pair to your Bluetooth headphones or speakers. This way, you could watch videos, enjoy music or play games wirelessly without experiencing lip-sync issues.
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
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, BT-DUO is not the right transmitter for you; please choose TROND BT-DUO II instead;
- 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 an 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 a 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.
- Did 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.