Can these be used continuously wile plugged in to a wall socket or usb port and a powered speaker?

YES, you can. You also can use the Avantree Quartet transmitter instead as that transmitter has no built-in battery.

Can I only use certain headphones styles for plug in? It doesn’t appear to have an Apple type connection.

You can use any headphones with 3.5 Jack connector

How many headphones can you connect to a receiver? Manuf. website indicates you can connect two to one receiver. So 3 Receivers = 6 headphones connect

AS FAR AS I KNOW, you can connect only 1 3.5mm earphone to each receiver, or 1 optical interface device, but not both at the same time. You *could* use a 3.5mm y-cable to connect 2 3.5mm earphones to one receiver, but keep in mind there is only 1 volume control on the receiver, so both earphones would be at same volume. I am not aware of any manufacturer support for 2 earphones connected to one receiver. I suggest you ask Avantree this question to clarify their support.

Can the transmitter have a microphone as the audio source?

Yes, you can connect the transmitter to a microphone headphone monitor output as audio source. If your microphone does not have that output, then it will not work.

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Avantree Audiplex – Wireless Audio Transmitter & Multiple Receivers Set for AV Receivers, Projectors, PA Systems, Assistive Listening System for Hearing Support, Group Listening in Church Home Theater

Avantree Audiplex – Wireless Audio Transmitter & Multiple Receivers Set for AV Receivers, Projectors, PA Systems, Assistive Listening System for Hearing Support, Group Listening in Church Home Theater

Product ID: 413485256

Details

Brand
Avantree
Connectivity Technology
Wireless
Material
Aluminum
Power Source
Battery
Special Feature
audio rate:

⚡Ultra-low 30ms audio lag

🎧Universal AUX & Optical compatibility

📶Connects up to 100 devices

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Description

🎙️ Elevate your group audio game—wireless freedom, zero compromise!

PERSONALIZED VOLUME CONTROL - Each receiver offers independent volume adjustment, empowering every listener to customize their sound without compromise.
MASSIVE MULTI DEVICE SUPPORT - Scale effortlessly with up to 100 receivers on one transmitter—perfect for group listening or assistive setups.
LAG FREE LISTENING EXPERIENCE - Experience near-instant audio with 30ms latency, slashing standard Bluetooth delays for flawless sync.
RELIABLE LONG RANGE CONNECTION - Enjoy stable wireless audio transmission up to 100 feet, ensuring uninterrupted performance across rooms or venues.
SEAMLESS UNIVERSAL COMPATIBILITY - Plug into any AUX or optical audio source and connect with virtually any headphones or speakers on the market.

The Avantree Audiplex is a premium wireless audio transmitter and multi-receiver system designed for professional and home AV setups. Supporting up to 100 simultaneous receivers, it connects via AUX or optical inputs and delivers ultra-low 30ms latency over a stable 2.4GHz wireless link. Each receiver features individual volume controls, making it ideal for group listening, assistive hearing, or multi-user environments like home theaters, churches, and PA systems.

Specifications

ASIN	B095CDP58W
Additional Features	audio bitrate/sampling rate: 16bit/48khz
Audio Output Mode	Stereo
Audio Output Type	auxiliary, optical
Battery Charge Time	2 Hours
Battery Type	Lithium-Polymer
Battery Weight	14 Grams
Best Sellers Rank	#67,849 in Electronics ( See Top 100 in Electronics ) #101 in Audio Component Receivers
Bluetooth support?	Yes
Brand	Avantree
Built-In Media	Transmitter X 1 Receiver X 3 USB A to Type C Charging Cable X 1 (1.5M/5FT) 3 in 1 USB A to Type C Charging Cable X 1 (60CM/2FT) Optical Audio Cable X 1 (1.5M/5FT) AUX 3.5mm Audio Cable X 1 (1.5M/5FT) AUX 3.5mm to RCA Audio Cable X 1 (35CM/1FT) Wired Earbuds X 3 (75CM/2.5FT) Attachment Clip X 3
Color	Black
Compatible Devices	Optical / AUX Devices – TVs, mixers, laptops, microphones
Connectivity Technology	Wireless
Connector Type Used on Cable	AUX or Optical
Control Method	Touch
Control Type	Volume Control
Controller Type	Button Control
Customer Reviews	4.3 4.3 out of 5 stars (177)
Enclosure Material	Aluminum
Human Interface Input	Touchscreen
Includes Remote	No
Item Dimensions L x W x H	4.49"L x 2.95"W x 1.18"H
Item Weight	318 Grams
Lithium Battery Weight	0.8 Grams
Lithium-Battery Energy Content	0.8 Watt Hours
Manufacturer	Avantree
Model Name	WSTR-2403-S
Number of Batteries	4 Lithium Polymer batteries required. (included)
Number of Channels	2
Number of Lithium-ion Cells	1
Power Source	Battery Powered
Rechargeable Battery Included	Yes
Warranty Description	Warranty - 12 months (extend to 24 months with product registration) \| Extensive Support: Chat, Email, Phone, Online Clinic, Video Tutorials, FAQ and Registration - avantree.com/support

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