Hello. i just unpacked my unit, and when i plug it in, the led display does not come on, how do i get it to activate? is my unit broken?

I believe your unit may be broken.

Speakers a and c work but b and d do not. not even the same channel, any ideas ??

Kenneth's answer isn't correct. The subwoofer connects through the RCA port on the lower right. I'm not sure why only half of your speakers are working.

Is this unit a blue-tooth receiver or a blue-tooth transmitter?

think of it as an audio receiver through a Bluetooth or aux connection - your phone would connect to it over Bluetooth (or a stereo 3.5mm cable if your phone has a headphone jack) and send Spotify or other music to this device, which would send the audio out through speaker wires.

What is the max of watts

I'm not sure of the max watts, but it gets really loud even at 15. I have to constantly yell down to my son to "Turn It Down!"

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Facmogu 4 Channel Bluetooth 5.0 Amplifier with Active Subwoofer Output

Product ID: 334102681

Details

Manufacturer
Facmogu
Maximum Supply Voltage
12 Volts (DC)
Minimum Supply Voltage
12 Volts (DC)
Mounting Type
Surface Mount
Voltage
12 Volts

📶Bluetooth 5.0 with 30ft range

🔊40W RMS x4 stable output

🎚️Dual zone volume control

HK$754

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hong Kong.

Secure transaction

Description

🎵 Elevate every space with sound that moves you—zone your vibe, own your audio!

ACTIVE SUBWOOFER READY - Dedicated output for powered subwoofers delivers deep, punchy bass that transforms your audio experience.
NEXT GEN BLUETOOTH 5 0 - Enjoy wireless streaming with a robust 30ft range, connecting effortlessly to your PC, mobile, or laptop without interruption.
POWERFUL 4 CHANNEL OUTPUT - Drive up to 4 passive speakers with crisp, reliable 40W RMS per channel for immersive multi-zone sound.
SEAMLESS MULTI ZONE CONTROL - Independent volume knobs let you customize audio levels across different rooms or outdoor zones—perfect for dynamic social settings.
USER FRIENDLY INTERFACE REMOTE - Adjust bass, treble, and volume with intuitive knobs, a bright LED display, and convenient remote control—comfort meets control.

The Facmogu 4 Channel Bluetooth 5.0 Amplifier delivers 40W RMS per channel to power up to four passive speakers with stable, high-quality sound. Featuring dual volume controls for independent multi-zone audio management, it’s ideal for home, patio, or outdoor setups. Equipped with Bluetooth 5.0 for seamless wireless streaming up to 30 feet, plus USB, SD, and AUX inputs, it supports active subwoofers for rich bass. Easy to operate with bass/treble knobs, LED display, and remote control, this amplifier combines versatility and convenience for a premium audio experience.

Specifications

ASIN	B097C6BLHY
Best Sellers Rank	#72,987 in Electronics ( See Top 100 in Electronics ) #461 in Audio Component Amplifiers
Brand	Facmogu
Customer Reviews	4.1 4.1 out of 5 stars (623)
Item Highlight	RMS 40Wx4, Max 800W Home Audio Receiver \| USB/SD/AUX Inputs \| Mini Power Amp for Outdoor Speakers, Garage, Patio & Home Audio
Manufacturer	Facmogu
Mfr Part Number	A18301-MG-US
Model Number	A18301-MG-US
Warranty Description	1 Year Warranty

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

HK$754

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hong Kong.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

View all Trustpilot reviews