Does it work while plugged in to a power source? I do not need the battery aspect. I want to leave it plugged in all the time.

Hi Dawn,Thanks for your enquiry.Yes, this item can work while plugged into a power source. But please kindly note that it is better to use a 5V 1A power adapter.Thanks for your all support to Ugreen.Any more information, please contact us with support.us@ugreen.com.cn.

How many Bluetooth connections/devices does this device support?

It can only be connected to one at a time. But I personally have a laptop and a couple of phones that it is paired with. Just have to disconnect then connect when you change devices.

Does this support Passive or Active speakers?

Active only, there's no power amplifier in this thing...

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UGREEN Bluetooth AUX Adapter Built-in Battery, Support Dual Pairs Bluetooth 5.3 Receiver for Old Stereo, 3.5mm/ RCA Dual Channel for Home Stereo Speakers

UGREEN Bluetooth AUX Adapter Built-in Battery, Support Dual Pairs Bluetooth 5.3 Receiver for Old Stereo, 3.5mm/ RCA Dual Channel for Home Stereo Speakers

Product ID: 37622930

Details

Brand
UGREEN
Connectivity Technology
Bluetooth
Item Weight
4.7 Ounces
Power Source
Battery
Special Feature
Built-In

📡Bluetooth 5.3, 10m range

🔋8h battery life

🔗Dual device pairing

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€ 32.33

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Sold byAmazon BelgiumDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎧 Upgrade your classic stereo to wireless bliss — because your music deserves the future.

EFFORTLESS ONE TOUCH CONTROL - Pause, play, and auto-reconnect with intuitive button operation for hassle-free listening.
8 HOUR BUILT IN BATTERY FREEDOM - Enjoy all-day music playback without tangled wires or constant charging.
SEAMLESS BLUETOOTH 5 3 CONNECTIVITY - Experience ultra-stable wireless streaming up to 33 feet without dropouts.
DUAL DEVICE PAIRING FOR SHARED VIBES - Connect two phones simultaneously and never miss a beat with friends or partners.
UNIVERSAL COMPATIBILITY WITH RCA 3 5 MM - Transform your vintage stereo or wired headphones into a modern Bluetooth powerhouse.

The UGREEN Bluetooth AUX Adapter is a sleek, portable Bluetooth 5.3 receiver with built-in 8-hour battery life, supporting dual device pairing and both 3.5mm and RCA outputs. It effortlessly converts old stereo systems and wired headphones into wireless audio hubs, delivering high-quality, low-latency sound with a stable 10-meter range, perfect for modernizing your home audio experience.

Specifications

ASIN	B01J5DYWTW
Additional Features	Built-In Bluetooth, Built-in Battery, Double Pairing
Audio Input	3.5mm AUX, RCA
Audio Output Mode	Stereo
Audio Output Type	Headphone
Best Sellers Rank	#89,983 in Electronics ( See Top 100 in Electronics ) #376 in Wireless Audio Receivers & Adapters
Bluetooth support?	Yes
Brand	UGREEN
Built-In Media	1x UGREEN Bluetooth Receiver Adapter , 1 x Micro Charging Cable (3ft/1m), 1 x 3.5mm Audio Cable (3ft/1m), 1 x User Manual (NOT included RAC cable and charger)
Color	Black
Compatibility Options	Bluetooth-enabled devices
Compatible Devices	Wired Headphone, Speaker, Home Stereo, Car Stereo
Connectivity Technology	Bluetooth
Connector Type Used on Cable	3.5MM AUX, RAC Audio, Stereo Audio
Control Method	Touch, Voice
Controller Type	windows, phone
Customer Reviews	4.3 4.3 out of 5 stars (347)
Hardware Interface	Bluetooth 5
Includes Remote	No
Installation Type	wired and wireless
Item Weight	4.7 Ounces
Lithium Battery Weight	5 Grams
Lithium-Battery Energy Content	0.74 Watt Hours
Manufacturer	Ugreen Group Limited
Number of Batteries	1 Lithium Polymer batteries required.
Number of Channels	2
Number of Lithium-ion Cells	1
Power Source	Battery Powered
Rechargeable Battery Included	Yes
Supported Media Type	bluetooth
Supported Standards	Bluetooth 5.3
Warranty Description	no
Wireless Compability	Bluetooth

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