--- product_id: 335138290 title: "ZK-502M Audio Mini 2.0 Stereo 50W+50W bluetooth Digital Amplifier Module 50W*2 AMP Amplificador Home Theater AUX USB" brand: "dollatek" price: "S$27" currency: SGD in_stock: true category: "Dolla Tek" url: https://www.desertcart.sg/products/335138290-zk-502m-audio-mini-2-0-stereo-50w-50w-bluetooth store_origin: SG region: Singapore --- # Bluetooth 5.0, 15m range 50W+50W stereo power 5-24V wide voltage input ZK-502M Audio Mini 2.0 Stereo 50W+50W bluetooth Digital Amplifier Module 50W*2 AMP Amplificador Home Theater AUX USB **Brand:** dollatek **Price:** S$27 **Availability:** ✅ In Stock ## Summary > 🎶 Tiny Amp, Massive Sound — Power Your Space with Style! ## Quick Answers - **What is this?** ZK-502M Audio Mini 2.0 Stereo 50W+50W bluetooth Digital Amplifier Module 50W*2 AMP Amplificador Home Theater AUX USB by dollatek - **How much does it cost?** S$27 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/335138290-zk-502m-audio-mini-2-0-stereo-50w-50w-bluetooth) ## Best For - dollatek enthusiasts ## Why This Product - Trusted dollatek brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **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. ## Overview 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. ## Description Feature:Audio input: Bluetooth+AUX+USB flash disk+Computer USB(plug and play)Power Supply: DC5-24V(high power recommended high voltage)Adapter speaker: 10-100W; 4-8ΩChannels: Left and right stereo (stereo)Bluetooth version: 5.0(>15 meters without occlusion)Protection mechanism: Overheat, Overcurrent, short circuit protectionProduct size: 60x60x29mmPackage includes:1 x bluetooth Digital Amplifier Module kit ## Features - ZK-502M AMP is a mini Bluetooth AMP smaller than a card, its peak output power can reach 50W+50W, wide voltage input: 5-24V, you can easily buy a matching DC power supply. - This AMP protection board is printed with connection icons, allowing you to easily connect to each port without reading the manual. - This AMP has three input methods, their input sequence is USB mode/AUX mode/Bluetooth mode. - You can directly connect to the computer through the USB interface without a driver, you can also connect to the playback device through the AUX 3.5mm interface, and finally, you can also connect to the mobile phone through the Bluetooth mode. - There is no doubt that both can be connected. When you connect passive speakers, this AMP is a Bluetooth power amplifier; when you connect active speakers, this AMP is equivalent to a Bluetooth receiver. It should be noted that two types of speakers cannot be connected at the same time. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B095P1KS7V | | Best Sellers Rank | 25,603 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 105 in Hi-Fi Amplifiers | | Brand | DollaTek | | Country Of Origin | China | | Customer Reviews | 4.1 4.1 out of 5 stars (462) | | 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 | ## Product Details - **Manufacturer:** DollaTek - **Maximum supply voltage:** 24 Volts (DC) - **Minimum supply voltage:** 5 Volts - **Mounting type:** Freestanding - **Voltage:** 24 Volts ## Images ![ZK-502M Audio Mini 2.0 Stereo 50W+50W bluetooth Digital Amplifier Module 50W*2 AMP Amplificador Home Theater AUX USB - Image 1](https://m.media-amazon.com/images/I/518r2Ebb2WS.jpg) ## Questions & Answers **Q: 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** A: No Passcode required on mine, i use for audio on my PC. **Q: Does that have audio interface built-in?** A: 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. **Q: Hello! does it come with the power supply? is it suitable for the uk? i was told i need 240v to 12v. thanks!** A: 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. **Q: Does the aux out disconnect the speakers** A: 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 ## Frequently Bought Together - DollaTek ZK-502M Audio Mini 2.0 Stereo 50W+50W bluetooth Digital Amplifier Module 50W*2 AMP Amplificador Home Theater AUX USB - 24V Power Supply 24 Volt 3A AC Adapter 72W Charger 24V DC Transformer for LED Strip Light CCTV Camera Cisco Router - owootecc Zero Delay USB Encoder Arcade Game DIY Parts Kit for PC, Raspberry Pi 4/3 / 2/1 Model B with RetroPie,Arcade MAME JAMMA Game Project（2Pack） --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/335138290-zk-502m-audio-mini-2-0-stereo-50w-50w-bluetooth](https://www.desertcart.sg/products/335138290-zk-502m-audio-mini-2-0-stereo-50w-50w-bluetooth) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-10-21*