Can this be hard wired

Yes, but the power in on the back is still 12v. You’ll need a transformer or other solution in-wall to hard wire it. LED drivers can be used and are small and cheap. Just make sure it’s 3A or more.

Does this unit allow an external amplifier with existing in-wall wires to be used as the aux input inside the wall?

It's amplifier itself, has bluetooth, mic, USB, aux functions.

Can it be used for TV and in countries using 220 volt ? Thanks

This unit is a Bluetooth receiver with amplifier so it can be used with any device. The unit uses a 12volt dc power supply. As long you provide it the 12 volts dc you will be fine. The house voltage can be whatever your adapter takes to convert to 12 volts.

Where do i connect speakers ? what is max impedance for speakers?

There is a green terminal at the back of wall plate,could connect 4Ohm speakers.

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Herdio in Wall Audio Control Amplifier Receiver 2 Channel Wall Plate with USB Microphone Aux (3.5mm) Input 100Watt Max Module for Sound Systems Home Theater Integration Compatible with Bluetooth

Product ID: 151204868

Details

Audio Encoding
Stereo
Audio Output Mode
Stereo
Brand
Herdio
Color
white
Compatible Devices
Smartphone
Connectivity Technology
Bluetooth

📶30+ ft Bluetooth wireless range

🔊100W max power output

🔌USB port for media & charging

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$108

Duties & taxes included

In stock

Sold byAmazon BermudaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎶 Elevate your space with wireless power and sleek control — sound that’s always on point.

VERSATILE USB PORT - Play media directly from USB flash drives or charge your devices on the go.
DUAL SPEAKER SUPPORT - Power up to two speakers with a robust 100W max output for immersive sound.
PLUG PLAY AUX INPUT - Instantly connect any 3.5mm audio device—no hassle, just pure sound.
DISCREET WALL MOUNTED DESIGN - Sleek installation blends into your home or office, elevating your sound system without clutter.
SEAMLESS BLUETOOTH STREAMING - Connect effortlessly to any smart device within 30+ feet for wireless audio freedom.

The Herdio In-Wall Audio Control Amplifier Receiver is a 2-channel, 100W max power wall plate designed for seamless home theater and sound system integration. Featuring Bluetooth connectivity with a 30+ foot range, USB media playback and charging, plus a 3.5mm aux input, it supports up to two speakers and installs easily into any wall for a clean, professional audio setup.

Specifications

ASIN	B07WK65VHM
Audio Encoding	Stereo
Audio Output Mode	Stereo
Audio Output Type	Speakers
Best Sellers Rank	#27,861 in Electronics ( See Top 100 in Electronics ) #152 in Audio & Video Distribution Wall Plates
Brand	Herdio
Color	white
Compatible Devices	Smartphone
Connectivity Technology	Bluetooth
Connector Type	3.5mm Jack
Control Method	Touch
Controller Type	iOS
Customer Reviews	4.3 4.3 out of 5 stars (506)
Format	WMA
Manufacturer	Herdio
Mfr Part Number	HMA-16BT
Model Number	HWA-16BT
Number of Channels	2
Other Special Features of the Product	Built-In Bluetooth
Output Power	40 Watts
Output Wattage	100 Watts
Surround Sound Channel Configuration	2 Channel
Wattage	40 watts
Wireless Technology	Bluetooth

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