Is it possible to have 3 receivers in the same room? I assume I would need to change each to be on a different frequency/channel, is that possible?

You can have 2-3 transmitters in the same location, as far as keeping them 3 feet apart from each other. No need to re-program them.

I ordered the set of 4 earphones with the transmitter for a silent disco experience and now need to order 4 additional earphones which do I order?

Here is the additional headphones for Quartet - https://www.amazon.com/dp/B09DKS353X

How adjustable are the headphones? I'm looking for something that my young children can use and grow into.

Adjustable to fit kids to adults

Is it possible for my wife to listen from TV speaker while I listen through headphones?

Yes that should not be a problem. I am able to use the headphones as well as my sound bar and TV speakers.

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Description

🎉 Elevate your group entertainment—wireless sound, zero delay, total control!

ZERO LIP SYNC DELAY - RF 2.4GHz tech slashes audio lag to 7ms—way faster than Bluetooth—perfectly synced for immersive viewing.
PARTY READY AUDIO SHARING - Stream one source to 4 headphones, expandable up to 100 for epic silent discos or backyard movie nights.
INCLUSIVE SOUND EXPERIENCE - Pass-through feature lets non-headphone users enjoy TV audio simultaneously with headphone listeners.
PERSONALIZED VOLUME CONTROL - Each headphone has independent volume adjustment—your sound, your rules, no compromises.
SEAMLESS MULTI DEVICE COMPATIBILITY - Works flawlessly with TVs, projectors, AV receivers, Blu-ray players, and more via OPT, AUX, or RCA.

The Avantree Quartet is a 4-pack wireless headphone system designed for group audio sharing with ultra-low 7ms latency using RF 2.4GHz technology. It supports up to 100 headphones connected to one transmitter, offers independent volume control per unit, and is compatible with a wide range of audio sources including TV, projectors, and AV receivers. Ideal for silent discos, backyard movie nights, classrooms, and churches, it ensures perfectly synced audio with pass-through support for external speakers.

Specifications

Noise Control	Passive Noise Cancellation
Frequency Response	20000 Hz
Headphones Jack	6.35 mm Jack
Model Name	Quartet
Connectivity Technology	Wireless
Wireless Communication Technology	RF
Included Components	Wireless Headphones
Age Range (Description)	Adult
Material	Faux Leather
Specific Uses For Product	Entertainment
Charging Time	3 Hours
Recommended Uses For Product	Backyard movie parties, Church, Silent discos, School classes
Compatible Devices	TV, Projector, Stereo AV Receiver, Mixer board, Blu-ray Player
Control Type	Volume Control
Cable Feature	Detachable
Item Weight	220 Grams
Water Resistance Level	Not Water Resistant
Frequency Range	20Hz - 20KHz
Customer Package Type	FFP
Net Quantity	4.0 count
Style	1 to 4 Set
Control Method	Touch
Number of Items	4
Controller Type	Touch
Battery Life	20 Hour
Audio Driver Type	Dynamic Driver
Audio Latency	7 Milliseconds
Earpiece Shape	Over-ear
Special Feature	Multipoint Pairing
Manufacturer	Avantree
Model	WSHT-5049
Model Year	2021
Product Dimensions	17 x 10 x 8 cm; 220 g
Batteries	4 Lithium Polymer batteries required. (included)
Item model number	WSHT-5049
Special Features	Multipoint Pairing
Batteries Included	Yes
Batteries Required	Yes
Cable feature	Detachable
Wireless Type	Bluetooth
Does it contain liquid?	No
Includes Rechargeable Battery	Yes
Includes remote	No
Manufacturer	Avantree
Item Weight	220 g

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