--- product_id: 335138290 title: "DollaTek ZK-502M Audio Mini 2.0 Stereo 50W+50W bluetooth Digital Amplifier Module 50W*2 AMP Amplificador Home Theater AUX USB" brand: "dollatek" price: "102.12 DT" currency: TND in_stock: true reviews_count: 13 category: "Dolla Tek" url: https://www.desertcart.tn/products/335138290-dollatek-zk-502m-audio-mini-2-0-stereo-50w-50w store_origin: TN region: Tunisia --- # Bluetooth 5.0, 15m range 50W+50W stereo power 5-24V wide voltage input DollaTek ZK-502M Audio Mini 2.0 Stereo 50W+50W bluetooth Digital Amplifier Module 50W*2 AMP Amplificador Home Theater AUX USB **Brand:** dollatek **Price:** 102.12 DT **Availability:** ✅ In Stock ## Summary > 🎧 Tiny amp, massive sound—power your space with DollaTek ZK-502M! ## Quick Answers - **What is this?** DollaTek 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?** 102.12 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/335138290-dollatek-zk-502m-audio-mini-2-0-stereo-50w-50w) ## 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 for immersive sound. - • **Built-in Protection:** Overheat, overcurrent, and short circuit safeguards keep your investment safe and sound. - • **Seamless Connectivity:** Triple input modes—USB plug & play, AUX, and Bluetooth 5.0—ensuring effortless device pairing anytime. - • **Plug & Play Simplicity:** Intuitive connection icons eliminate manual hassle, making setup lightning-fast for busy pros. - • **Versatile Compatibility:** Supports 4-8Ω speakers from 10W to 100W, perfect for upgrading home theaters or desktop setups. ## Overview The DollaTek ZK-502M is a compact Bluetooth 5.0 digital amplifier module delivering 50W per channel stereo output. It supports wide voltage input (5-24V) and multiple audio inputs (USB, AUX, Bluetooth) for versatile connectivity. Designed with intuitive port icons and built-in protection mechanisms, it’s ideal for powering 4-8Ω passive speakers in home theater or desktop audio setups, combining portability with powerful sound performance. ## 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 Review: It's tiny and cheap, but somehow it does exactly what it says it on the tin - Very easy to put together, and feels more robust as a pair of printed circuit boards connected with brass standoffs than an equally-cheap plastic housing would. The negative reviews seem to suggest it can burn itself out, but adding active cooling is extremely easy - it keeps its USB port powered when it's in the other modes, and there's enough current coming from it that its 5V output is keeping a 120mm PC fan meant to run on 12V spinning quickly enough to move air, but slowly enough to be silent. If you don't want to run a bodge, one of those pound-shop gooseneck USB fans for laptops would probably be just as good, and 50mm fans with USB cables are cheap too as people use them to cool 3D printer hot ends. When I was putting it together, I made sure to fit the little heatsink so that the fins are perpendicular to the edge it's closest to - I don't know how much of an actual effect that'll have, but it means the air can move through the fins rather than into the side of one. It seems to be fine with some pretty big speakers - I had a pair of Alesis M1 Mk. II active monitors die, victims of the capacitor plague, and I converted them to passives: each are now 8-ohm with 5.5-inch 75W woofers and 25W tweeters, and this thing, powered by a 20V 3.95A laptop PSU rescued from the dump, is able to run the pair of them fine. More than loud enough for a medium-sized room with no missing low-end. The photos make it look like it'll be too small for this to be possible...and it's even smaller in person. Brow-furrowing. If I haven't updated the review, assume it's still alive! Review: Very loud but not the best sound quality - No instructions but didn't take long to work it all out. The heatsink doesn't stick very well. Powering it with a 24v 5a LED brick (photo attached, cabling is short as it was just a test). Neighbours probably not impressed after I gave it a good slog with some drum n bass... But hey, that's life! Noticeably louder than my other supposed 100w amp but also noticeably not as smooth sound-wise. A bit too much midrange but if you got an EQ you'll be tweaking it. My Akai speakers aren't exactly Bose. There's some stupid voice when you switch it on. The blue light on mine constantly flashes (I was running it through the audio socket to my smartphone, rather than the bluetooth) and I would recommend you turn the volume to minimum when you power it on or off. I had a rather loud click through the speakers. For this price, it's hard to complain about the negatives. I'm going to give it full marks despite all the quirks listed above. Dollatek, take note: Get rid of that stupid voice on startup and the flashing blue light and you've got a cheap and very cheerful amplifier. ## 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 | 6,711 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 15 in Hi-Fi Amplifiers | | Brand | DollaTek | | Country Of Origin | China | | Customer Reviews | 4.4 4.4 out of 5 stars (437) | | Manufacturer | DollaTek | | Material | Cardboard | | Maximum Supply Voltage | 24 Volts (DC) | | Minimum Supply Voltage | 5 Volts | | Model Number | ZK 502M | | Mounting Type | Freestanding | | Number of Channels | 2 | | 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 ![DollaTek 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 ## Customer Reviews ### ⭐⭐⭐⭐⭐ It's tiny and cheap, but somehow it does exactly what it says it on the tin *by P***T on 3 June 2024* Very easy to put together, and feels more robust as a pair of printed circuit boards connected with brass standoffs than an equally-cheap plastic housing would. The negative reviews seem to suggest it can burn itself out, but adding active cooling is extremely easy - it keeps its USB port powered when it's in the other modes, and there's enough current coming from it that its 5V output is keeping a 120mm PC fan meant to run on 12V spinning quickly enough to move air, but slowly enough to be silent. If you don't want to run a bodge, one of those pound-shop gooseneck USB fans for laptops would probably be just as good, and 50mm fans with USB cables are cheap too as people use them to cool 3D printer hot ends. When I was putting it together, I made sure to fit the little heatsink so that the fins are perpendicular to the edge it's closest to - I don't know how much of an actual effect that'll have, but it means the air can move through the fins rather than into the side of one. It seems to be fine with some pretty big speakers - I had a pair of Alesis M1 Mk. II active monitors die, victims of the capacitor plague, and I converted them to passives: each are now 8-ohm with 5.5-inch 75W woofers and 25W tweeters, and this thing, powered by a 20V 3.95A laptop PSU rescued from the dump, is able to run the pair of them fine. More than loud enough for a medium-sized room with no missing low-end. The photos make it look like it'll be too small for this to be possible...and it's even smaller in person. Brow-furrowing. If I haven't updated the review, assume it's still alive! ### ⭐⭐⭐⭐⭐ Very loud but not the best sound quality *by B***9 on 27 September 2024* No instructions but didn't take long to work it all out. The heatsink doesn't stick very well. Powering it with a 24v 5a LED brick (photo attached, cabling is short as it was just a test). Neighbours probably not impressed after I gave it a good slog with some drum n bass... But hey, that's life! Noticeably louder than my other supposed 100w amp but also noticeably not as smooth sound-wise. A bit too much midrange but if you got an EQ you'll be tweaking it. My Akai speakers aren't exactly Bose. There's some stupid voice when you switch it on. The blue light on mine constantly flashes (I was running it through the audio socket to my smartphone, rather than the bluetooth) and I would recommend you turn the volume to minimum when you power it on or off. I had a rather loud click through the speakers. For this price, it's hard to complain about the negatives. I'm going to give it full marks despite all the quirks listed above. Dollatek, take note: Get rid of that stupid voice on startup and the flashing blue light and you've got a cheap and very cheerful amplifier. ### ⭐⭐⭐⭐ better than youd think *by P***L on 11 August 2024* it cant really run on 5 volt very well without cutting out, maybe 5volt 2 amp but not really off a power bank but 9 volt or more works fine and its bluetooth works really well, soundwise its really not bad ## 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.tn/products/335138290-dollatek-zk-502m-audio-mini-2-0-stereo-50w-50w](https://www.desertcart.tn/products/335138290-dollatek-zk-502m-audio-mini-2-0-stereo-50w-50w) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-24*