HT380 Product Support

By now, your transmitter should be connected to your TV / Audio source (Part 1).

Your headphones and transmitter are paired and connected (Part 2).

This Step 3 is to make sure the compatible audio signal is received by the transmitter.

If you are using RCA or AUX connection, you need to adjust TV Sound OUT to 'Headset' or "External speaker". 

Image 1- 3.5mm AUX jack

Image 2- TV RCA audio out(Red/White ports labeled "AUDIO OUT ")

Image 3- TV sound out settings with "Headset" or "External speaker" selected

or

If you are using an Optical or HDMI ARC connetion, you need to:

1. Set TV Sound OUT to "Optical / Digital Audio Out/HDMI ARC."

2. Set Audio Input & Output format to PCM/Stereo (except for Avantree Orbit).

Image 4- TV digital audio out port

Image 5- TV sound settings - optical out

Image 6- TV sound settings - HDMI ARC Out

 Image 7- Set TV audio format to PCM

Please click into your TV brand below and follow the instruction Step-by-step.

* If your TV brand is not listed below, you can do the following

1. check TV manual or google its manual online and find its Audio output port options

2. email support@avantree.com with the picture of your TV back panel ports so we can help. 

Note 3.1 If you are using smart TV's HDMI ARC port, and your Sound output option HDMI ARC / Optical is ONE option, then your optical output will not work with HDMI ARC plugged in.

Fix - use other HDMI port, not the HDMI ARC. 

Note 3.2 If your TV is very OLD and you use Roku, Fire Stick etc. for Netflix, Amazon Prime movies, TV optical port might not be compatible with latest movie audio format and hence no sound for those. (very rare)

Other General Troubleshooting Tips if No Sound after the following set up

RCA / AUX - Plug in a wired headphone to test the sound output. If you cannot hear any sound, then either you are using the wrong port or TV Sound out set wrong. 

Optical

1) OPT is lit up SOLID? 

2) Optical port & optical cable has red light inside?

If the problem persists after all the troubleshooting above, please fill the Toubleshooting Form for No sound/Not working for us to identify the issue faster and solve the problem as soon as we can-

https://avantree.com/troubleshooting-verification/transmitter-tv-headphone-set-no-sound-form

Many people use external soundbar with their TV for a better audio experience. When a soundbar is involved, we suggest one of the following models for wireless audio streaming:

For those soundbar connected with TV via optical cable, the recommended connection is:

TV optical out <- Optical cable 1 -> Avantree Transmitter from TV OPT in (black port) / To Speaker OPT out (gray port) <- Optical cable 2 -> Soundbar OPT IN, here is the Reference Connection Diagram:

NOTE: 1. When you use this connection, make sure NO HDMI cable plugged in your soundbar. Only connect the soundbar via optical cable.

            2. Make sure to change your soundbar audio setting to "OPT" instead of "HDMI" or "Bluetooth" or other options.

For those soundbar connected with TV via HDMI ARC port, there are a few possible solutions:

Option 1.     Use optical connection instead of HDMI, as above

Option 2.     Use an eARC supported HDMI Audio Extractor(e.g. HAX05) for Avantree transmitter

Option 3.    Connect Avantree transmitter to TV cable box's optical port. 

Option 4.    If soundbar has optical out, then connect Avantree transmitter to sound bar output 

If you have a soundbar, but have other models not on the above list, you can simply get a DAC02 to get the audio signal for the wireless audio transmitter. 

More questions, pls contact support@avantree.com with your soundbar details for recommendation. Ideally, you can send us a simple diagram of your current set up. We will reply within 1 working day. 

If there is no sound after set up, please fill the Toubleshooting Form for No sound/Not working for us to identify the issue faster and solve the problem as soon as we can-

https://avantree.com/troubleshooting-verification/transmitter-tv-headphone-set-no-sound-form

Here are a few typical set ups for your reference:

Reference Connection 1  Use the AVR's Phones Output

AV Receiver Headphone port <- 6.35mm-3.5mm adapter + 3.5mm/AUX cable -> [Avantree Transmitter] AUX in from TV port ...... Headphones 

Pros: 

1. Easy to set up

2. No need to adjust the TV's audio format

3. Listen to all audio through the AV receiver / Sound bar, not just the TV program

Cons: 

Mutes the AVR speakers

Reference Connection 2 Use Optical Cable to connect the TV and AVR (Passthrough Function of Avantree Transmitter)

TV optical / digital out <- optical cable -> [Avantree Transmitter] Optical in from TV (Black) | Optical out to speaker port (Gray) <- optical cable -> Soundbar / AV receiver optical in 

Pros: 

1. Both the speakers and wireless headphones will have sound

2. Supports audio from all TV programs

Cons: 

1. Not all Avantree transmitters can do this; the ones that have this feature so far: Oasis Plus , HT5009, HT5006, Orbit , Opera , Medley Clear, Duet, & Quartet

2. Need to set the Audio format on the TV to PCM except when using with the Orbit. As a result, you can't get surround sound through the AVR speaker.

Reference Connection 3 Find an audio output on the AVR which can work with your soundbar at the same time such as the Zone 2 RCA output port (analog audio out) or the Zone 2 HDMI output (digital audio out).
In order to ensure that the Zone 2 port works, please check the manual of the AVR for how to set up Zone 2 first.




For RCA output port(Analog audio out port), please make sure its output power fits our transmitters' AUX input requirements:

1. Max input level: 2000 Vrms 

2. Input impedance < 64Ω

If you're not sure, please check with your AVR's manufacturer, or you can try to plug a pair of wired headphones into the RCA port. If you can get sound through the wired headphones as normal, then the RCA port will work with our transmitter. 

For Zone 2 HDMI output (digital audio out), you will need an additional HDMI converter to connect with the Zone 2 HDMI port.  https://avantree.com/hdmi-audio-extractor-converter-hax04

Pros: 

Keep Surround Sound 7.1 / 5.1 to your speakers with the Avantree Transmitter and TV headphones working at the same time 

Cons: 

May need to get an extra HDMI Audio Extractor 

Not every AVR has these ports in the back

If none of the above reference designs work for you, or you have other suggestions, we love to hear from you. Please email to support@avantree.com

Television, AV Receiver, Non-Bluetooth Laptop/Computer

The HT380 supports "Ambient" Mode. The Ambient Mode basically acts like a hearing aid - it allows the user to hear his/her surroundings through the earphone or the receiver's built-in microphone.

To activate this feature, please follow the steps below.

Step 1: Make sure that the earphones (neck-loop receiver) is turned ON.

Flip the power switch on the receiver to "ON" position. The LED indicator on the receiver will either start flashing GREEN (if the transmitter dock is OFF) or turn SOLID GREEN (if the transmitter dock is ON.)

Step 2: Press the Ambient Button on the receiver.

You'll hear 2 "beeps" through the earphones, and the LED indicator on the receiver will turn SOLID RED.

And now you're good to go! If you'd like to switch back to regular mode, simply press the Ambient Button again.

If you encounter any issue doing this, please send us an email at support@avantree.com.

Step 1: Make sure the Receiver are OFF. UNPLUG the Transmitter Dock from power.

Step 2: Turn ON the Neck-Loop Receiver.

Step 3: Get the Receiver into Pairing Mode.

Press & Hold the big grey Ambient button for a 5 seconds until the LED indicator starts flashing GREEN rapidly.

Step 4: Plug the Transmitter dock to power and give it a few seconds. It will auto connect to the Receiver. Turn on your TV and play the sound.

Once connected, the LED indicator on the receiver will turn SOLID GREEN.

Please send us an email at support@avantree.com if you have any questions.

You may adjust the volume via the Volume Adjustment Wheel on the earphone (receiver.)

This feature is especially useful when the transmitter dock is connected to TV via Optical connection; this would be the only effective way to adjust volume since the TV's built-in volume control usually doesn't work under optical mode.

Spin the wheel left/right to adjust volume.

Switching between the Sound Modes

You CAN add a 2nd pair of headphones (neck-loop receiver) to HT380 and share the audio with a partner, BUT you can ONLY do so with one from another HT380 set; the other headphones will NOT work. You can repeat this procedure and connect with up to 100 HT380 headphones.

Step 1: Turn OFF or UNPLUG the 2nd HT380 Set.

Step 2: Turn the 1st HT380 Set ON (both the neck-loop receiver AND the transmitter dock.)

Step 3: Turn OFF the 1st HT380 Set (both the neck-loop receiver AND the transmitter dock.)

Yes, we know this is quite annoying, but please bear with us for a little longer.

Step 4: Get the neck-loop receiver from the 2nd HT380 set into PAIRING MODE.

Press & Hold the big grey "Ambient" button on the receiver for 5 seconds until you see the LED indicator on it flashing YELLOW-GREEN.

Step 5 (Optional): If you'd like to Connect more than 2 Neck-Loop Receivers.

Please repeat Step 4 on all the Receivers you'd like to connect.

Step 6: Get the transmitter from the 1st HT380 set into PAIRING MODE.

Turn the transmitter dock from the 1st HT380 set ON (ONLY the transmitter. Keep the receiver OFF.) It will enter pairing mode and the "transmit" indicator on transmitter will start flashing GREEN.

Step 7: Give them a few seconds to connect.

Once connected, the LED indicator on receiver will turn SOLID YELLOW-GREEN.

And voila! You now have two or more headphones both connected to the 1st transmitter.

If you're still having trouble with this, please contact us at support@avantree.com.

Wearing

The L/R spinner on the back of the earphones (receiver) can be used to adjust the volume balance of each of your earbuds.

If you'd like to make your LEFT Earbud louder, simply turn the spinner towards the "L" label. On the other hand, if you'd like to make your RIGHT Earbud louder, you'd want to spin the spinner towards the "R" label.

You may adjust the balance according to your hearing situation.

Please feel free to contact us at support@avantree.com if you need assistance.

When the headphone (neck-loop receiver)'s battery is low, you'll start hearing "beeps" through them. Please charge the headphones when it happens.

There are 2 ways to charge the headphones (receiver.)

1. Charging via the Transmitter Dock.
   • Plug the receiver back into the transmitter dock. The (1) battery indicator will turn RED while charging. Once the charging is done, it'll turn GREEN.
   • 
   • 
2. Swapping in the Spare Battery.
   • The HT380 set comes with an extra battery. Simply swap in that extra battery, and insert the drained battery into the battery charging dock to charge.
   • The (2) battery indicator on the front side of the transmitter dock will turn RED when the battery is charging and turn GREEN when the charging is complete.
   • 
   • 
   • 

If you have any question, please email us at support@avantree.com.

Indicators

This is particularly an issue when you're using the Digital Optical Audio output port for the Transmitter Adapter.

Nowadays, most movies & TV shows have Dolby Digital Sound - Generally speaking, Bluetooth technology can only handle stereo sound and not Dolby, DTS, etc (except for our Orbit/TC580).

Here's the fix: 

1. Open Netflix/Prime on the TV first (VERY IMPORTANT)

Netflix

Prime

2. Get your TV remote and press Settings to go to Settings (while in Netflix/Prime)

Netflix

Prime

3. Set your Audio Output to PCM. Here's how to do it with Samsung TV as an example. Go to Sound >> Expert Settings >> Digital Out Audio Format >> PCM

Netflix

Prime

4. Close the Settings and check if you can hear sound on Netflix or Prime Video.

If the problem persists after all the troubleshooting above, please fill the Toubleshooting Form for No sound/Not working for us to identify the issue faster and solve the problem as soon as we can-

https://avantree.com/troubleshooting-verification/transmitter-tv-headphone-set-no-sound-form

If 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 earphones?

Please follow the troubleshooting steps below:

Step 1: Check the LED indicator on your earphones (receiver) and the LED indicator labeled "TRANSMIT" on the transmitter dock. Are they SOLID GREEN and not flashing?

• If YES - Awesome! Proceed to Step 2!
• If NO - Your headphone has not been connected with the transmitter, please reboot them to make them reconnect.
  
  

Step 2: Has the transmitter dock been properly connected to your TV / AV Receiver? Double check with the articles below.

• Connect to a TV
• Connect to an AV Receiver
  
  

Step 3: Unplug from your TV, and plug it back in.

If you're using Optical Digital connection with your TV, please unplug the optical cable from your TV, and then plug it back in again. This will often make the TV recalibrate its signal format and should get it working.

Step 4: IF your answers have all been YES so far yet there's no sound, it's time to call your TV manufacturer! Not sure what to ask them? Don't worry, we've got your back! please see below:

If you're using Digital Optical connection: How can I adjust my TV's audio output to PCM?

If you're using AUX (3.5mm) connection: How can I make the TV audio come out through headphones?

If you're using RCA (red/white) connection: How can I set my audio out to "external speakers?"

If you're still encountering issues, please email us at support@avantree.com, we'll have someone assist you as soon as possible.

Is the battery life much shorter than the 6 hours we advertised? Let's double check if there's something wrong with the batteries you received by answering the questions below.

1. Have you been leaving your TV idle for more than 5 minutes?

The receiver/earphone's battery-saver function automatically turns it OFF if it's left idle for over 5 minutes. All you have to do is turn the receiver OFF and then ON again.

2. Has the LED indicator on the Neck-Loop Receiver (earphone) been flashing GREEN?

The transmitter dock has been connected to TV and you have something playing on your TV, the LED indicator on the receiver should be SOLID GREEN. If it's flashing, it means that your receiver is NOT connected to the transmitter dock. Please reconnect them by rebooting both the receiver AND the transmitter dock.

If they still don't reconnect, please follow the steps in THIS ARTICLE.

3. Is the LED indicator flashing RED?

Try to charge the device overnight and use it again, see if the battery life is still way too short. If it is, please contact us at support@avantree.com.

If you're experiencing Short Range, Static Noise, or Audio Cuts, please try the methods below and see if the issue can be fixed.

Method 1: Reboot the HT380.

Turn both the transmitter dock and the neck-loop receiver off, give them a few seconds, and turn them back on again.

Method 2: Clear away any potential Wireless Interference Devices.

Other wireless devices in the vicinity of the transmitter may negatively affect the range. This "source of interference" can be a WiFi router, a TV box, or a Bluetooth device.

To solve this issue, simply move either the transmitter or the source of interference away; that ought to clear the problem.

Method 3: Avoid Physical Objects.

Walls, solid materials, or even human bodies can all become "obstacles" that negatively affect the device's range.

Try clearing the space between your Earphones and your Transmitter, and see if that helps.

If these still can't fix the issue, please contact us at support@avantree.com, we'll do our best to help.

Can't get sound when using TV Box or Cable Box or Video apps? (Applies to Roku TV, Amazon Fire TV, Apple TV, Netflix, Amazon Prime Video, Google Chromecast, Nvidia Shield, DirecTV, Xfinity TV, AT&T U-verse, Dish Network and more) Please click your device below and check the settings step by step.

If the problem persists after all the troubleshooting below, please contact us via support@avantree.com

Hearing 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:

1. Go to SOUND OUTPUT and change this to OPTICAL / EXTERNAL SPEAKER
2. Once there's sound going out into the headphones, go back to SOUND OUTPUT and change this back to TV SPEAKER

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

• For AUX Output - Use an audio splitter (e.g. Avantree TR302) to share the TV's audio between an EXTERNAL SPEAKER and the Transmitter. The splitter in this example is a 3.5mm audio splitter

• For Optical AUDIO OUT - Use an optical splitter (e.g. J-Tech splitter) to share the TV's audio between an EXTERNAL SPEAKER and the Transmitter. The splitter in this example is an optical audio splitter.

• For HDMI ARC OUT - Use an HDMI Audio Extractor (e.g. HAX05) to share the TV's audio between an EXTERNAL SPEAKER and the Transmitter. The splitter in this example is an ARC supported HDMI audio extractor.

Your pacemaker is designed to work properly around most appliances and tools. However, electromagnetic interference (EMI) from headphones and earbuds may affect how your pacemaker works. These effects are usually temporary. Still, we recommend following these guidelines to stay safe.

Anything that transmits Bluetooth or with a magnet inside cannot be used closer than 6'' (15 cm) to a pacemaker. All of our Headphones, Speakers, and Earbuds, as well as all of our Bluetooth products fall under this category, and must not be placed very close to your pacemaker. Normal usage of our headphones and earbuds - wearing them in or over your ears - is completely safe.

The Takeaway: It’s safe to use headphones and earbuds with your pacemaker, but you should not drape them around your neck or store them in a breast or other shirt pocket - as that would put them too close to your pacemaker. Normal usage should bear no problems.

The HT380 is Compatible with...

• ANY TV in the market.
• ANY AV Receiver that supports DIGITAL AUDIO OUT, AUX (3.5mm) OUT, or a PHONES port.
• ANY Laptop / Computer with an AUX (3.5mm) Port.
  
  

For more questions, please email us at support@avantree.com.

Here are a few things you'd want to know about Bluetooth...

1. Bluetooth by nature is a short-range wireless technology.

Bluetooth was initially made specifically for wireless headsets hence its “range” was never meant to be anything more than the length of a typical backyard.

2. Bluetooth Signals are easily interfered with.

Much like almost any other modern wireless technology, Bluetooth signals can be negatively affected by things like walls, floors, other wireless devices, or even a human body.

If you want a better range & less interference, try to stay clear of the things mentioned above.

3. There are two types of Bluetooth.

In short, they are “Class 1” and “Class 2.”  Class 1 has better range (100m/300ft) but drains your battery faster, whereas Class 2 has a shorter range (10m/30ft) but is more efficient when it comes to battery usage.  

4. The “Actual Range” depends on a lot of things.

Things that can affect the range: Bluetooth version, Bluetooth type, Bluetooth profile, Brand & make, where you’re using it, what’s around you… etc and many more. Getting a bad range doesn’t necessarily mean your device is bad; try it elsewhere before you give it a conclusion.

5. The “Transmitter” and the “Receiver.”

Every Bluetooth connection consists of a “transmitter” and a “receiver.” The “transmitter” sends the signals to the “receiver.” In a typical Bluetooth headphone connection, your phone is the transmitter and the headphone is the receiver.

There are cases where one device can do both, but it is unlikely that they’ll be able to do both at the same time.

Here are some examples:

• Transmitters: Phone, Computer (can sometimes use as receiver), TV.
• Receiver: Headphones, Speaker

Avantree offers the following customer support to help you make the best of our products?

Online DIY Support

1. Visit Product Page - you can find product comparison info, accessories link, Support page link.
2. Product Support page - Guide, Troubleshooting, Q&A Session for each product. (FromAvantree.com > Use Top Right Magnify Class to Search your Product Name > Click Product > Click Support button on the right product > check relevant info on page)
3. Product Video Guide - Step by step (from youtube.com > search product name

Agent Support

1. Submit a Ticket OR File a Claim (1 working day reply)
2. Send an email to support@avantree.com (1 working day reply)
3. Book a call or Screensharing Online Clinic with us and let an agent help you in real-time.
4. Live Chat with Agent (Pacific Standard Time, Mon-Thur 9 am-11 pm, Fri, 9 am-5 pm)
5. Telephone Support (Local Number here)
6. Join our Daily Live Online Zoom Clinic to speed up the troubleshooting process (Time: 11 am - 12 pm PST/ 2-3 pm EST /7-8 pm GMT; 10-15 min for each clinic)

Avantree offers the following native language support?

English
Spanish
Italian
German
French
Chinese

See more details in Warranty Policy and RMA Policy

Avantree Products RMA (Return Merchandise Authorization) Procedure

1.     60-Days-Return-Refund

Item purchased from Avantree.com can be returned to the closest Avantree RMA center for full refund within 30 days of purchase with no question asked.

Customer will be responsible for return shipment cost unless item is returned due to defective issues.

Avantree RMA centers are located at:

-        USA - San Jose & Los Angeles

-        Canada – Vancouver

-        EU - London, UK

-        Australia – Roxburgh Park

-        Asia – Cebu, Philippines

-        Asia – Hong Kong, China

-        Asia – Shenzhen, China

2.     Defective RMA

Within the Warranty Period (24 Months), if the customer encounters any issue, we recommend following the steps below:

Step 1:  DIY Support – Visit support.avantree.com, we have a complete troubleshooting guide that should solve at least 90% of the issues.

Step 2: Agent Support – Contact Avantree Customer Service Agents by email (support@avantree.com), phone, or chat for troubleshooting & issue diagnosis.

Step 3: Replacement

3.1. Confirmed Defective Unit

-        Avantree provides RMA (CD) number to customer

-        Customer returns the product to Avantree

o   Purchased within 6 months – Avantree will cover the return label cost.

o   Purchased over 6 months ago – Customer will cover the return label cost.

-        Avantree arranges the Replacement

o   Will be arranged as soon as the return shipment has been shipped.

o   Customer can expect to receive the replacement unit within 5-7 working days.

3.2. Back-for-Investigation Unit

-        Avantree provides RMA (BI) number to customer

-        Customer returns the product to Avantree. Customer will cover the return label cost.

-        Avantree arranges the follow up

o   Confirmed Defective Units – Please Refer to Section 3.1.

o   No claimed issue found – Avantree will arrange the Original Unit or the Replacement Unit to be shipped back to the customer. Avantree will cover the cost of shipping if the shipment is domestic.

Note:

1. The RMA return unit will be equivalent to or better than the condition of the defective unit
2. The RMA return unit's warranty terms will only be activated once the defective unit is received. For those who do not return their defective items within 30 days, their product warranty will be terminated.
3. Replacement Unit Warranty Terms:
   • If the remaining Warranty of the Defective Unit is less than 3 months – The Replacement Unit will receive 3 months warranty beginning on the date of reception.
   • If the remaining Warranty of the Defective Unit is more than 3 months – The remaining Warranty Period will be automatically transferred onto the Replacement Unit.

Return Policy:

Every Avantree product purchased from our website comes with an up to 60 days free trial.

Within 60 days of buying, if you have an issue with or simply don't like the product, you can ship it back to us and we'll fully refund you for the price that you bought it. If you have a product malfunction, we can replace the product for you if that's preferable, and we'll cover the return shipping costs.

Warranty Policy:

Avantree warrants its products for a period of 24 months from any defects in manufacturing, materials, or workmanship from the date of purchase from either an Avantree Direct store or an Avantree authorized reseller and used in normal conditions.

However, this warranty does NOT cover:

· Damage from misuse or abuse,

· Damage from lack of reasonable care,

· Damage from force majeure,

· Damage from natural forces/disasters,

· Damage from inadequate repairs performed by unauthorized service centers,

· Water damage on non-water-resistant products,

· Theft or losing the item.

If you encounter issues during the warranty time, pls follow Avantree RMA Procedure. 

To make sure our customers have the best user experience, we choose to send the replacment first before you send back the faulty unit. Once the replacement is received and confirmed to be working, we will then send you the return label for the faulty unit for our quality control purposes. We expect you to cooperate and send the faulty unit back within 30 days. If not, then the warranty of your replacement unit will be voided.

Batch No. or Lot No. is a 4-5 Digit/Alphabet combination (e.g. T22F1, 22B1, or T22J1) printed somewhere on the product. The "somewhere" is usually as follows:

1. on the bottom of the product;

2. on the inside of the Headband, just above the Earcups;

3. on the in-line controls or on a Tag near the 3.5mm AUX Plug;

4. on metal head of the adapter;

Above are some examples that'll give you an idea of what the Batch/Lot Number looks like and where to find them. The print for Batch No. or Lot No. is usually quite small; please consider using a magnifying glass if it's hard to read.

Items with the "ADD TO CART" button are for purchase in your area. Those without the Add to Cart button means not available in your area, normally because it is out of stock. Besides, the estimated delivery time is not applied for pre-order and backorder items.

Here is a table of the recommended store info for customers from each country. We also include information about - where the goods will be shipped from as well as the estimated delivery time.

Remarks:

1. Warranty is 24M for orders from avantree.com
2. Items purchased from other authorized distributor channels will be entitled to 12m warranty, and extendable to 24m upon warranty registration within 30 days from date of purchase
3. Not all stores/sellers from the links above are authorized resellers.

If you have any questions about placing orders, shipping countries, tracking information, or others. Please check here for more information.

If you have the problem of being redirected to the wrong store and unable to place an order when you visit avantree.com, the first thing you can try is to switch to another web browser. If that does not work, here are two methods for you to solve the issue.

Method 1. Visit our site in an Incognito window of your browser. We will take Google Chrome as an example to show you how to open an Incognito window.

Note: If you are using other browsers, please refer to the settings process of chrome above.

Step1. Open the Chrome browser and click on the top-right menu, then choose the "New Incognito Window" option.

Step2. Type the Avantree website address into the Incognito window to visit our site. Now you should be able to see our store!

Method 2: Clear your browser's cookies. We will use Google Chrome as an example to show you how to find and clear browsing data (cookies). Note: If you are using other browsers, please refer to the settings process of chrome above.

Step1. Open the Chrome browser and click on the top-right menu. Choose "History", and another menu will appear to the side. Then click "History" on the left.

Step2. Click "Clear browsing data" on the left menu, then select the time range, and make sure all the boxes are checked. Lastly, click "Clear data" to submit. Now you should be able to see our store!

If you still have problems, please feel free to contact us via support@avantree.com.