Duet-Extra Product Support

You CAN add the Duet-RX to other transmitters, BUT you can ONLY do so with Avantree 2.4G transmitters, e.g. Quartet Transmitters, Audiplex Transmitters; other transmitters will NOT work. You can repeat this procedure and connect with up to 100 headphones.

Step 1: Get the Duet Transmitter into pairing mode.

Turn on Duet Transmitter. Set it into PAIRING MODE manually by sliding and holding the Power Switch to "PAIR" for 2 seconds until the LED starts flashing Blue and Red quickly.

Step 2: Get the Headphones into Pairing Mode.

Turn on the headphones. Slide and hold the power Switch to "pair" until the LED indicator starts flashing Blue and Red.

Step 3: Give them a few seconds to connect.

Once connected, the LED indicator on headset and transmitter will turn solid Blue. 

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

Inside the box, you’ll find the Duet-RX wireless headphones and a USB Type C Charging Cable.

Buttons on the Headphones:

Right Earpiece:

Left Earpiece:

Headphones Function Table:

LED Indicator Table:

We would suggest using a USB wall adapter(5V/1-2A) as a power source, contact us for a free adapter if you do not have one. 

• Charging methods
  • Place on charging stand
  • Insert provided USB C cable

• Indicators
  • Charging - LED on the headphone/transmitter turns RED 
  • Fully charged - LED on headphone/transmitter turns OFF
• Related information
  • Battery - 650mAh built-in rechargeable Lithium polymer battery
  • Time to fully charge: 3.5 hours
  • Playtime once fully charged - up to 20 hours at 60% volume

Note: You can place the headphones on the charging stand when it's in "ON" position so that you can easily pick up the headphones for your next time use without turning it on again.

If you’re using the Duet-RX wireless headphones as an additional headphone for the Duet, Here’s how to add them to the Duet.

Note: You can repeat this procedure and connect with up to 100 headphones.

Step 1: Get the Duet Transmitter into pairing mode.

Turn on Duet Transmitter. Set it into PAIRING MODE manually by sliding and holding the Power Switch to "PAIR" for 2 seconds until the LED starts flashing Blue and Red quickly, then release the switch back to "ON".

Step 2: Get the Headphones into Pairing Mode.

Turn on the headphones. Slide and hold the power Switch to "pair" until the LED indicator starts flashing Blue and Red, then release the switch back to "ON".

Step 3: Give them a few seconds to connect.

Once connected, the LED indicator on headset and transmitter will turn solid Blue. 

Adding onto Avantree Quartet:

Step 1: Turn on the Quartet transmitter, set it to PAIRING MODE manually by pressing and holding the "PAIR" button for 2 seconds until the "Status" LED starts flashing WHITE quickly.

Step 2: Set the headphones into PAIRING MODE (While powered ON , slide the power switch to "PAIR" and hold for 2s, until you see the LED light flashing RED and BLUE quickly).

Step 3: Keep the devices close to each other and wait. Once connected, the “Status” LED on the transmitter will show solid WHITE, and the headphones LED will show solid BLUE.

Adding onto Audiplex

Step 1: Turn on the Audiplex TRANSMITTER and get it into PAIRING MODE

1) Slide the switch "Aux/Opt/Off” to "Opt" or "Aux" to power it on.
2) Press and hold the “Pair” button until the "Audio" indicator start flashing BLUE quickly.

The connected receivers will be disconnected once the transmitter in Pairing mode.

Step 2: Set the headphones into Bluetooth PAIRING MODE (While powered ON , slide the power switch to "PAIR" and hold for 2s , until you see the LED light flashing RED and BLUE quickly).

Step 3: Keep the devices close to each other and wait. Once connected, the “Audio” LED on the transmitter and the headphones LED will show solid BLUE.

If you're experiencing difficulty adding the Duet-RX wireless headphones to another Avantree 2.4G Audio System, please try the methods below and see if the issue can be fixed.

Method 1: Reboot BOTH devices.

Method 2: Re-Pair the Headphones to the Transmitter.

Turn off both the headphones and the transmitter.

Slide & hold the power switch to pair on the headphones until the LED indicator starts to rapidly flashing Blue and Red alternatively.

Turn the transmitter tower back on. Slide and hold the Power Switch for 2s until the LED indicator starts to rapidly flashing Blue and Red alternatively. Once connected, the LED indicator on the headphones and transmitter should turn SOLID BLUE.

Method 3: Clear away any potential Wireless Interference Devices.

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

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

Method 4: 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 headphones and your transmitter tower, and see if that helps.

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

These are the cleaning products we recommend for use on our headphones.

Disinfecting Wipes
https://www.amazon.com/dp/B08BKR9YT6

If you are using over-ear headphones, you can also get washable headphone covers for easy cleaning.
https://www.amazon.com/dp/B07BP4PCVY

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.

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

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.

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.

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.

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