The power amplifier is connected correctly, why is there noise such as electric current?

Please check whether there is current sound when no load. And confirm that the surrounding current signals will not cause interference. Please make sure all the cable completely pushed into the device, incompletely connections will create distorted.

Can bluetooth function and wired connection be used simultaneously?

Please note that the Bluetooth function and the wired function cannot be used at the same time, so when you want to use the amplifier via the Bluetooth function, do not connect any devices to the jacks (except the microphone jack).

Can you connect two devices with bluetooth?

No, connecting two at the same time will cause the audio stream to be disrupted. It can only be disconnected and then connected to other devices.

If you find that the Bluetooth connection is unstable, you can try the following steps to solve it.

Make sure there are no obstacles (especially metals) blocking the signal. Turn off the power amplifier, disconnect and clear the connection of the Bluetooth transmitting device, and try to reconnect.

Why only one channel work ? Is it defective?

Since the amplifier is not used alone, it needs to be used together with other electronic equipment, so it needs to be ruled out one by one! Are the positive and negative wires connected to the speaker connected together?

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AK45Pro Stereo Audio Amplifier,400W 2Channel Bluetooth 5.0 | Stereo Receivers with FM, AUX, USB, SD, MIC Inputs,for Home Theater Speakers, Karaoke,Garage

Product ID: 609229452

Details

Audio Encoding
Windows Media
Audio Output Mode
Speakers
Brand
WOOPKER
Color
Black
Compatible Devices
Smartphone CD
Connectivity Technology
['RCA USB']

🎤2 MIC inputs for karaoke

📶Bluetooth 5.0 connectivity

🔊400W peak power

S$89

Duties & taxes included

In stock

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Description

🎶 Elevate your sound game—because your space deserves pro-level vibes!

SEAMLESS WIRELESS STREAMING - Bluetooth 5.0 ensures effortless, high-quality connection to all your devices—no wires, no hassle.
TAILOR YOUR AUDIO EXPERIENCE - Adjust bass, treble, and volume with precision knobs plus remote control for couch-side command.
ULTIMATE KARAOKE PARTY STARTER - Dual microphone inputs let you and a friend take center stage anytime, anywhere.
POWERHOUSE SOUND IN A COMPACT FRAME - Max 400W peak power delivers rich, clear audio that transforms any space from bedroom to garage.
VERSATILE MULTI SOURCE COMPATIBILITY - Supports USB, SD card, RCA, and MIC inputs—perfect for home theater, gaming, or casual listening.

The WOOPKER AK45 Pro is a compact yet powerful 2.0 channel home audio amplifier delivering up to 400W peak power. Equipped with Bluetooth 5.0, USB, SD, RCA, and dual microphone inputs, it offers versatile connectivity for streaming, karaoke, and home theater setups. Its bass, treble, and volume controls, plus remote operation, provide a customizable listening experience ideal for millennials seeking premium sound in small spaces.

Specifications

ASIN	B0CR7C6KBC
Audio Encoding	Windows Media Audio (WMA)
Audio Output Mode	Speakers
Audio Output Type	Speakers
Best Sellers Rank	#11,735 in Electronics ( See Top 100 in Electronics ) #53 in Audio Component Amplifiers
Brand	WOOPKER
Built-In Media	1X Audio Amplifier, 1X Power Cable, 1X Remote Control (Note: Remote control uses AAA batteries; please purchase separately.), 1X User Manual
Color	Black
Compatible Devices	Smartphone,Computers,Television, CD Player, Tablet, Passive Speakers
Connectivity Technology	['RCA, USB']
Connector Type	RCA
Control Method	Remote
Controller Type	Hand Control
Customer Reviews	4.3 4.3 out of 5 stars (575)
Format	WAV, WMA
Item Dimensions D x W x H	7.1"D x 2.5"W x 5.5"H
Item Weight	890 g
Manufacturer	Jieyang Rongcheng District Baitong Electronics Factory
Mfr Part Number	AK45 pro
Model Number	AK45 Pro
Number of Channels	2
Other Special Features of the Product	RCA, Built-In Bluetooth, Bass, Treble,Volume Control, Microphone Inputs
Output Power	100 watts
Output Wattage	800 watts
Surround Sound Channel Configuration	2.0 Channel
Unit Count	1 Count
Warranty Description	1 Year
Wattage	100 watts
Wireless Technology	Bluetooth

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