does the bluetooth pairing need a passcode? I'm wanting to connect to an Amazon Echo, and it won't connect if there's a passcode

No Passcode required on mine, i use for audio on my PC.

Does that have audio interface built-in?

The listing claims "You can directly connect to the computer through the USB interface without a driver" so it should be able to function as an audio interface output without any extra kit needed. It has a DAC built in, which I have tested with bluetooth and USB drives and this works well.

Hello! does it come with the power supply? is it suitable for the uk? i was told i need 240v to 12v. thanks!

To get the full 50+50 Watt output you will need a 24v 5A power supply. I used a SMPSU ( switched mode power supply unit) 12v 5A power supply which I got from Amazon. This gives a max output of 35+35W which is more than enough for my small living room and annoy the neighbours! N.B. you have to wire these PSU's yourself.

Does the aux out disconnect the speakers

The AUX port is input and has to be plugged into the device you're playing music from. If you disconnect the aux cable, you enter bluetooth mode, it's a bit frustrating that you have this manual step every time you want to switch to bluetooth. Anyway, hope this helps

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DollaTek ZK-502M Audio Mini 2.0 Stereo 50W+50W bluetooth Digital Amplifier Module 50W*2 AMP Amplificador Home Theater AUX USB

Product ID: 335138290

Details

Manufacturer
DollaTek
Maximum supply voltage
24 Volts (DC)
Minimum supply voltage
5 Volts
Mounting type
Freestanding
Voltage
24 Volts

📶Bluetooth 5.0, 15m range

🔊50W+50W stereo power

🔋5-24V wide voltage input

161.21 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎶 Tiny Amp, Massive Sound — Power Your Space with Style!

COMPACT POWERHOUSE - Mini amp smaller than a card delivering a robust 50W+50W stereo output.
SEAMLESS CONNECTIVITY - Three versatile inputs—USB plug & play, AUX 3.5mm, and Bluetooth 5.0 for effortless device pairing.
PLUG PLAY SIMPLICITY - Intuitive connection icons eliminate manual hassle, making setup lightning fast.
SMART SPEAKER COMPATIBILITY - Switches roles between Bluetooth power amp for passive speakers and Bluetooth receiver for active speakers—just pick your setup.
UNIVERSAL VOLTAGE FLEXIBILITY - Supports a wide 5-24V input range, compatible with various DC power supplies for ultimate convenience.

The DollaTek ZK-502M is a compact, high-performance Bluetooth digital amplifier module delivering 50W per channel stereo output. Featuring Bluetooth 5.0 with a 15m range, USB plug & play, and AUX input, it supports a wide voltage range (5-24V) for flexible power options. Designed for easy setup with clear connection icons, it smartly adapts to both passive and active speaker configurations, making it the perfect minimalist upgrade for home theater and audio enthusiasts.

Specifications

ASIN	B095P1KS7V
Best Sellers Rank	23,980 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 109 in Hi-Fi Amplifiers
Brand	DollaTek
Country Of Origin	China
Customer Reviews	4.1 4.1 out of 5 stars (460)
Manufacturer	DollaTek
Manufacturer Part Number	ELA17579
Material	Cardboard
Maximum Output Power	50 watts
Maximum Supply Voltage	24 Volts (DC)
Minimum Supply Voltage	5 Volts
Model Number	ZK 502M
Mounting Type	Freestanding
Number of Channels	2
Number of Items	1
Output Power	50 Watts
Package Type Name	Product Kit Box" or "Equipment Kit Box
Specification Met	Industry Standards and Safety Requirements
Voltage	24 Volts

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