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Details -
• Transmission Mode: Digital Hopping System
• Carrier Frequency: 2.4GHz
• Operating Voltage: Transmitter 5V, Receiver 3.7V Lithium Polymer Battery
• Frequency Response: 20Hz-20KHz
• Distortion: 0.5%
• Signal-to-noise Ratio: 85dB
• Work Time: 6 Hours Play Time For Each Battery
• Charge Time: 2 hours
• Operating Range: Up to 100ft/30m
Products Bar Code - 69456249 03549
Find the latest info we have available to get this product up and running quickly.
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The Avantree HT381 is a Wireless TV Headphone set that uses RF 2.4GHz technology. It’s universally compatible with all TVs on the market, no lip sync delay.
It includes 3 equalizer modes, each optimized for different use-cases to help you hear better. The 2.4G technology allows HT381 to connect up to 100 extra HT318 headphones at the same time – wirelessly.
No more delay
Extended work range
Three sound mode
Volume boost
Work with all tvs
Replaceable battery
Thanks to HT381’s Optical, AUX, and RCA input cables, almost every TV on the market is covered. What really sets the HT381 apart is the Mic in feature that lets you connect to ANY TV (includes non-smart and non-Bluetooth TVs) and enjoy the audio wirelessly. The Mic in function is incredibly convenient when the TV audio ports are hard to reach or mounted.
Avantree HT381’s headphone and transmitter are factory pre-paired so there’s no need for you to go through the complex and painful manual pairing procedure. Simply connect the transmitter base to TV, power both the headphone AND the transmitter on, they’ll connect with each other automatically and you’ll be good to go! Quick and easy!
The HT381 uses 2.4Ghz technology (NOT Bluetooth) for broadcasting audio; it reduces the audio lag down to ~ 7ms, significantly less than the 220ms of Standard Bluetooth and the 40ms of aptX Low Latency. You will experience NO lip-sync delay no matter how many headphones you connect - perfect choice for watching TV and movies.
The HT381’s ambient mode can be used as a hearing aid device. This “mode” picks up and amplifies the ambient sound around you so you can hear your environment without having to take the headphones off. The Ambient mode is particularly useful when you’d like to make a conversation with someone in your household while enjoying TV.
Clearer dialogues, heavier bass, balanced sound – the Avantree HT381 offers three different sound modes, each enhanced for different scenarios; conveniently switch between the three with just the click of a button. The headphones also feature L/R audio balance control in case you need one side to be louder than the other.
The headphone battery only runs for 4 hours per charge, but the battery can be easily detached and replaced. The 381 set comes with a spare battery that can be placed & charged in the spare battery charging port on the back of the HT381 dock – while the headphone is in use. You may rotate between the two batteries for longer hours of use.
When the headphone is not in use, the transmitter dock of Avantree HT381 doubles as a charging dock. Simply place the headphone (receiver) back into the dock, it should automatically start charging. This way, the headphone will be ready and fully charged by the time you’re ready to use it again.
The RF 2.4G technology used by HT381 allows the user to add up to 100 pairs of additional HT381 headphones (sold separately) to the same audio source. With this, you and your family can enjoy an outdoor movie party or a silent concert without disturbing the neighbors. Each HT381 headphone connected can adjust volume independently.
The 2.4Ghz wireless technology in the Avantree HT381 set provides stable & reliable connection of up to 100 ft/30 m indoors (tested with 20 receiver dongles) and up to 300 ft/100m outdoors. Feel free to move around, the connection will remain, and you won’t miss a thing. However, please note that physical obstacles may negatively affect the actual range.
Avantree Wireless Transmitter / TV Headphone Set is not working for you, no sound? Troubleshooting Tips:
· Headphone and Transmitter Base should be well Connected
1. Avantree headphone should say "Welcome to Avantree. Connected." and shows Solid Blue light.
2. Transmitter should show Solid Light indicating ‘Connected’?
3. How to connect to Apple Airpods Max, Pro, Bose, Beats, Jabra, Plantronics, Sennheiser, Sony...
· Proper Audio Signal should be sent to the Transmitter (95% issues are here)
o Is your transmitter signal detecting LED SOLID (Signal coming through OK) or Flashing (No Valid Signal)?
o Check Your TV setting again (Samsung TV, LG TV, Sony TV, Vizio TV…)
o For AUX / RCA connections
• Use your headphone with a wire to listen. If no sound, then no signal coming from that port
• Transmitter base is set to AUX
o For Optical connection,
• Transmitter base is set to OPT
• Make sure your TV HDMI ARC port is not connected
• Unplug and Plug the optical cable from transmitter
• Start your Netflix / Amazon Prime Program first before change to PCM
• Contact your TV manufactory and ask “How to change the TV setting so i can get audio signal out of my port?”
· More complicated set up? Check How to use with Sound Bar & AV Receiver Set up Guide here
For further assistance, please contact us via support@avantree.com
If you contact us via email, please try to provide the following images for quick diagnosis:
1. Photo of the transmitter box and headphone, both turned on with their LED lights (Solid Blue?)
2. Photo of TV Audio output ports & TV HDMI ports
3. Photo of TV Screen with Sound Settings page - with Digital Optical Out selected (if you use optical cable)
4. Photo of TV Screen with HDMI in & Out Audio Format both set to PCM
5. If you also have AV Receiver and Soundbar connected, please draw a simple diagram how you connect them and the audio signal flow. (Note: The following diagram is just for your reference, you can draw it by hand.)
We will get back to you within 1 working day.
Still need help? Please email us at support@avantree.com
Back to TopFor Lot Numbers before T22L1:
The HT381 has a power saving function. The transmitter and the headphones will go into standby mode if there is no audio playing for 5 minutes. The headphones will disconnect from the transmitter once they go to standby mode. At this point, you'll need to reconnect them again.
You could check and follow the following steps:
For Lot Numbers T22L1 and after:
Once the headphones and the transmitter are powered on, they will auto pair with each other.
The only time they will disconnect is if the headphones are placed on the transmitter for charging, so you won't encounter the problems mentioned above.
Still need help? Please email us at support@avantree.com
Back to TopThe earbuds angle of the HT381 receiver can be adjusted. You can try to find a right angle to fit your ear. Take off the ear tips, adjust the angle like this:
Still need help? Please email us at support@avantree.com
Back to TopIf you have something plugged into the HDMI port on your TV, please check and see if the port you're using is a HDMI ARC port. For most TVs, when something is plugged into the ARC port, its other audio output ports will automatically be muted. Please switch to another HDMI port.
IF you have a sound bar or AVR that's using ARC, please consider switching to Digital Optical instead.
All set up but can't hear anything through your headphones? Please follow the troubleshooting steps below:
1. Receiver and Transmitter Base should be well Connected.
Once the receiver connected well with the transmitter base, the LED on the receiver will be solid Green. If not connected well, please check Connect the Headphone (Receiver) to the Transmitter Dock to reconnect them.
2. Proper Audio Signal should be sent to the Transmitter
Please check Your TV setting again (Samsung TV, LG TV, Sony TV, Vizio TV…)
And start your Netflix / Amazon Prime Program first before change to PCM
Please contact us at support@avantree.com if the above doesn't help.
Still need help? Please email us at support@avantree.com
Back to TopHearing audio through the TV speaker AND the headphones at the same time
If you'd like to get sound on both your TV speakers AND headphones at the same time, it DEPENDS on whether the TV is able to support getting sound out to two sources simultaneously. It is NOT related to the transmitter. The transmitter receieves the sound from your TV's output and streams it over to your Bluetooth headphones or speakers.
However, if you connect the transmitter to your TV via OPTICAL port and you can see the following options under the SOUND OUTPUT settings on your TV...
You can actually get sound simultaneously! Follow these steps:
If your TV doesn't support simultaneous output to both the TV speakers and headphones, here are some alternative methods you can consider:
For Audio Transmitter Users:
Solution 1: Connect the Transmitter to a TV box / AV Receiver instead
If you have a TV box (DirecTV, Xfinity, Bluray Player, etc.), you should be able to find audio output ports on the back of them. Try to connect the Avantree transmitter directly here instead of the TV. This method essentially allows you to "go around" the TV's built-in speakers.
Con: will not work on streaming apps if you have a Smart TV or streaming device
For all users:
Solution 2: For users with TV Sondbar / AV Receiver
2.1 Use Transmitters with Passthrough Function
If you have a Soundbar or Stereo Receiver, check your transmitter to see if it supports passthrough. If not, you can return your current product and consider purchasing one of these: Orbit, Oasis Plus, Opera, Medley 6018, HT5009, HT5006, Duet, or Quartet.
Our industry leading "Passthrough" function allows you to put the transmitter/base between a TV and an external speaker and have audio come out from both devices AT THE SAME TIME.
2.2 Use Audio splitter/extractor
Still need help? Please email us at support@avantree.com
Back to TopDetermine what types of audio ports you have. Do NOT turn anything on.
Note Valid RCA port must labeled "Audio OUT"
OPTION 1: Digital OPTICAL/TOSLINK/SPDIF – Recommended!
OPTION 2: AUX 3.5mm/ Headphone Out
OPTION 3: Red/White RCA Audio Out
NOTE: The Red & White RCA ports must be labeled "AUDIO OUT" to work.
OPTION 4: Can't Reach / Do Not Have Output Ports on TV?
OPTION 5: If You Have an AV Receiver
Still need help? Please email us at support@avantree.com
Back to Top