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Headphones for HT280Vendor: AvantreeStarting from Batch T23F1, we have upgraded the headphone chipset. Please check the batch number of your transmitter. Units manufactured before June 2023 (Batch No. T15A1–T23E5) are not compatible with the new headphones.Extra Headphones for HT280
Boosted volume
Replaceable battery
- $69.99
- Unit price
- per
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Duet-ExtraVendor: Avantree2.4G Wireless Headphone for Avantree Audio System(Duet, Quartet, Audiplex)Extra Headphones for Duet
Broadcasts to 100 headphones
For Duet, Quartet, Audiplex
- $79.99
- Unit price
- per
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Quartet-ExtraVendor: AvantreeAdditional pair of 2.4G Wireless Headphones for Quartet/Duet/Audiplex*Extra Headphones for Quartet
Broadcasts to 100 Headphones
For Quartet, Audiplex, Duet
- $69.99
- Unit price
- per
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Opera Plus ExtraVendor: AvantreeHeadphones for the Opera Plus Wireless TV Set (NO Stand), Not Compatible with OperaAdd-on Headphones for Opera Plus
Clear voice/cinema sound mode
For Opera Plus Only
- $89.99
- Unit price
- per
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Shift Extra HeadphonesVendor: AvantreeAdd-on 2.4G RF wireless headphones for the Avantree ShiftExtra Headphones for Shift
Broadcasts to 100 headphones
For Shift Only
- $59.99
- Unit price
- per
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AS50Q (Compatible ONLY with T24B1, T24D2, and Later Batches)Vendor: AvantreeCompatible with Batch T24B1, T24D2, and later. For older batches, please check out the AS50 model.Extra Headphones for Ensemble
35H play time
Comfortable wearing
- $69.99
- Unit price
- per
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Wireless Earphones for HT3831 / HT381 - Compatible with Batch T23J1 and LaterVendor: Avantree(Compatible with Batch T23J1 and Later) Add-On 2.4G RF Wireless Earphones For HT3831 / HT381, Scalable to 100 (No Charging Dock Included, Single Earphone Only)
- $68.99
- Unit price
- per
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Receiver for AudiplexVendor: Avantree2.4G Wireless Receiver for Avantree Audio System (Audiplex/Quartet/Duet)Audiplex Add-On Receiver
Broadcasts to 100 receivers
For Audiplex, Duet, Quartet
- $44.99
- Unit price
- per
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Harmony-ExtraVendor: AvantreeBluetooth & Multi-Room Add-On Speaker for Harmony SetExtra Speaker for Harmony
Broadcasts to 100 speakers
Bluetooth speaker works independently
- $79.99
- Unit price
- per
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Transmitter for Quartet, Audiplex, HarmonyVendor: AvantreeGen1 Broadcast transmitter base for Harmony, Quartet, & AudiplexGen1 Broadcast transmitter base for Harmony, Quartet, & Audiplex
Broadcasts to 100 headphones
no audio delay
- $69.99
- Unit price
- per
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Shift Extra TransmitterVendor: AvantreeAdditional 2.4G wireless transmitter for Avantree ShiftExtra Transmitter for Shift
Broadcasts to 100 headphones
For Shift Extra Headphones Only
- $79.99
- Unit price
- per
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Transmitter for AudiplexVendor: Avantree2.4G Wireless Transmitter for Avantree Audio System (Audiplex/Quartet/Duet)Audiplex Add-On Transmitter
Broadcasts to 100 receivers
no audio delay
- $59.99
- Unit price
- per
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Avantree Flex Base 2Vendor: AvantreeAvantree Flex Base 2, Extra Transmitter ONLY for Avantree Harmony / Quartet System - Not Compatible with Other Bluetooth Headphones / SpeakersExtra Transmitter ONLY for Harmony / Quartet System
ONLY compatible with Harmony / Quartet System
Support Bluetooth, optical, AUX audio input
- $69.99
- Unit price
- per
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Charger & transmitter 2-in-1
Support optical/AUX/RCA ports
- $79.99
- Unit price
- per
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Earpads for Aria SeriesVendor: AvantreeA replacement earpad set for Avantree Aria Series headphones. You will need to install the earpads yourself.
- $19.99
- Unit price
- per
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- $19.99
- Unit price
- per
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Battery for Soundbyte seriesVendor: AvantreeReplacement battery for Soundbyte / Soundbyte T / Soundbyte 860s
- $14.99
- Unit price
- per
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