--- product_id: 213403491 title: "200W Audio Amplifier Board" brand: "damgoo" price: "₹ 6081" currency: INR in_stock: true reviews_count: 13 url: https://www.desertcart.in/products/213403491-200w-audio-amplifier-board store_origin: IN region: India --- # 200W total output power Wide 12-24V DC input range Adjustable treble & bass controls 200W Audio Amplifier Board **Brand:** damgoo **Price:** ₹ 6081 **Availability:** ✅ In Stock ## Summary > 🎧 Elevate your sound game — power, control, and wireless freedom in one sleek amp! ## Quick Answers - **What is this?** 200W Audio Amplifier Board by damgoo - **How much does it cost?** ₹ 6081 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/213403491-200w-audio-amplifier-board) ## Best For - damgoo enthusiasts ## Why This Product - Trusted damgoo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last & Safe:** Advanced protections guard against overheating, voltage issues, and reverse polarity for worry-free use. - • **Seamless Connectivity:** Bluetooth 5.0 with 49ft range plus AUX input ensures effortless wireless or wired streaming. - • **Flexible Voltage Range:** Operates seamlessly on 12-24V DC, perfect for diverse DIY setups and power sources. - • **Powerhouse Performance:** Delivers a robust 50W+50W stereo plus 100W subwoofer output for immersive sound. - • **Tailored Audio Experience:** Fine-tune your sound with smooth treble, bass, and subwoofer volume knobs for theater-like clarity. ## Overview The DAMGOO 2.1 Channel Subwoofer Amplifier Board packs 200W total power with dual TPA3116 chips, supporting 12-24V DC input. It features Bluetooth 5.0 and AUX inputs for versatile connectivity, plus adjustable treble, bass, and subwoofer controls for a customized audio experience. Designed for DIY wireless speaker projects, it includes multiple safety protections and delivers crisp, distortion-free sound with professional-grade efficiency. ## Description Product description ZK-TB21 Bluetooth Amplifier Board Input Voltage: DC 12V-24V Max Power Output: 50W*2（R&L）+100W（Subwoofer） Input Method: Bluetooth & AUX Channel: 2.1 CH Stereo Output Output Impedance： 4-8Ω Bluetooth Version： BT 5.0 Protection Functions: Reverse Connection Protection Short Circuit Protection Self-recovery Overheat Protection Size: 120*100*22mm Weight: 195g TPA3116 D2 Is A Class D Power Amplifier IC Launched by TI, with very high index parameters. The highest modulation frequency can reach 1.2MHZ, and the high-power output distortion is less than 0.1% 50*25*10MM Large Heat Sink The large heat sink can provide good heat dissipation effect for the continuous high-power output of AMP, thus avoiding the chip from being burned out. Multiple Power Input Methods High-grade fence terminal-convenient wiring, not easy to short circuit; Two power input methods can meet your different wiring needs. NOTE Only when the audio input is sufficient and the power supply voltage/current input is sufficient, can there be enough power output. The higher the power supply voltage, the greater the output power; The smaller the impedance of the speaker, the greater the output power. It is recommended to use a 4Ω speaker. Finally, please make sure that the power of the adapted power supply is greater than the actual working power of the AMP to ensure the maximum output power. Warm Reminder The power switch on the board is a standby switch. After the switch is turned off, the machine is in a low-power standby state. To completely turn off the power or unplug it for a long time, you can unplug the DC plug on the machine. Properly increasing the voltage or reducing the speaker impedance can effectively increase the output power. Packing Include ZK-TB21 Power Amplifier Board * 1 Protective Shell * 1 Set DC Plug * 1 Screwdriver * 1 Knob * 5 7 * 24 Hours After-sales Service Paying attention to customer experience and satisfying customers is our service tenet. If you have any questions about the product, or the product has quality problems, please feel free to consult at any time, we will give you a 100% satisfactory answer. Review: Excellent little amp replaces vintage receiver, drives old subwoofer - I was using a vintage Pioneer 25W/ch receiver for the sound system in the workshop. I also have an old JBL powered subwoofer that had the amp go out, so I decided to order this little amp to see if I could power the old sub with it and at the same time replace the old Pioneer receiver for a little more volume, in addition to the sub added. The final setup: Two existing ceiling speakers, 8 Ohms each, paralleled with two Klipsch bookshelf speakers, 8 Ohms each , for a net 4 Ohms per channel; re-purposed JBL sub that has two 5 Ohm speakers in parallel, so 2.5 Ohms total. Amp is powered by a 24V/100W LED driver. The result: awesome! The bass could be better, but considering that the subs are only 6” diameter, not bad, certainly much better than without the sub. The Klipsch bookshelf speakers add a lot to the midrange and highs, complementing the ceiling speakers. As for the power supply, I first hooked it up with a 24V 60W power supply, and it worked fine, although the subwoofer started to clip at a fairly low volume. The power supply never got warm however. I tried a 24V/100W power supply anyway, and the bass was vastly improved. This tells me that the 60W was not able to supply the current peaks, so the 100W is staying. So, spend a little more and go for the bigger power supply to get more distortion-free bass. What I like about this amp: BT works flawlessly, connecting each time without fail. The range could be better, but understandable since the built in antenna is just a small PCB trace. There is a connector for an external BT antenna if desired. I like the audio controls: Bass frequency cutoff and volume, treble/bass/volume for the stereo channels. The amp is very power efficient, and has more power available than what I need. With a 24V power supply, driving 4 Ohms per channel + 2.5 Ohms subwoofer, it barely gets warm after several hours. My only complaint: The speaker terminals are tiny, so stacking wires greater than 2x 18ga can be difficult. Bottom line: highly recommended. Review: In......credible - I have not taken any pics yet so I will add them when it’s all ready, but I will say that I’m blown away with this little beast. I have been a car audio competitor for around 20 years now and have 2 world titles. I purchased the zx-100zl first to test the waters and still have it as the outside patio stereo and theater system. So I did not hesitate when my finger clicked on the order button for this 3 channel with separate sub unit with the treble, bass, sub volume, cross over control,and main volume knobs, which are very smooth and adjust flawlessly with no static or interference noises rolling out at all. The built in crossover is a little disappointing and is more like a cut frequency and wattage knob. I have hooked up a hand full of subs and pro woofers to see if box design would help or sub specs might be a factor but they all have the same sweet spot and going below that just kills the output, but the sweet spot is right at the spot that it needs to be anyway with every genre I went through, for me anyway. If possible try to get the unit as close to 24v as you can or at least 20v if you want to be able to utilize the units full potential. I am using a small digital voltage regulator or buck unit inline with the 19v laptop charger. That way I can just turn the adjustment knob up or down to go to 24v or down to 9v if I want to for some reason put some small 5w speakers on it, I won’t.. the sound clarity is flawless through the whole scale. Tweet response is on point. Mids and vocals are clear and powerful. If you keep the sub crossover above half way which seems to be around 100hz, you won’t loose any significant power. Over 100hz out of sub starts distorting the lowend vocals anyway so it works fine. I ended up putting a passive sub crossover inline out of the unit anyways just cause I already have some and it seems to really open up the wattage flow that the units crossover was smothering. At the moment I have 4 Yamaha 3 way 100w bookshelf speakers on the 2x50w full range channels and 2 6.5” subwoofers in a down fire custom built ported sub box tuned to 45hz on the 100w sub channel. I have it bluetoothed to my theater in my home office, aka work space, gaming system and second theater room. I can go from a virtual power point webinar to streaming John wick 3 on the 4K, to madden 21 on the xbox one or asphalt 9 on the gaming pc, and this little marvel is crisp, clean, clear, and will have the neighbors yelling at me with no problems. I highly recommend this bad boy even if you don’t need it. You will find a use for it. You will make use for it anyway. It’s that good.. also I would like to give 5 stars to the damgoo team for all the quick responses and customer first mentality that they seem to have perfected and have done nothing less then been amazing and don’t make you feel like just a customer but a personal friend from the first interaction. If everyone conducted business the way they do, the world would be a little nicer to itself.. sorry for the long winded review but how else could I have explained it. Awesome... ## Features - TPA3116D2 HIFI Chip Solution: Stereo Dual-channel Output to Ensure Continuous Serial High-power Operation, THD ≤0.1%. Wide Voltage Input DC: 12-24V; - Treble & Bass Control: If You Are Tired of The Inherent High& Low Bass, Why Not Try The High & Low Control Knob! This Will Make You Feel Like Being In A Movie Theater.； - Bluetooth and AUX Function: Bluetooth 5.0 version, Transmission Distance Is Farther. The Transmission Distance Can Reach 49 Feet In An Open Environment. If your Play Device Does Not Have Bluetooth, You Can Also Input Audio Signals Through The 3.5MM Headphone Plug.； - Safety Protection: This Amp Board Has Overheat Protection, Reverse protection, Circuit Protection, Over-voltage and Under-voltage Protection； - 7 * 24 Hours After-sales Service: Paying Attention To Customer Experience And Satisfying Customers Is Our Service Tenet. If You Have Any Questions About The Product, or The Product Has Quality Problems, Please Contact Us At Any Time, We Will Give You A 100% Satisfactory Answer. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B089KT3FG9 | | Best Sellers Rank | #42,912 in Electronics ( See Top 100 in Electronics ) #252 in Audio Component Amplifiers | | Brand Name | DAMGOO | | Customer Reviews | 4.4 out of 5 stars 1,043 Reviews | | Global Trade Identification Number | 00194852390263 | | Included Components | amplifier board | | Item Dimensions | 4.72 x 3.94 x 0.87 inches | | Item Weight | 195 Grams | | Item dimensions L x W x H | 4.72 x 3.94 x 0.87 inches | | Manufacturer | DAMGOO | | Maximum Supply Voltage | 24 Volts (DC) | | Minimum Supply Voltage | 12 Volts (DC) | | Model | ZK-TB21 | | Mounting Type | Surface Mount | | Number of Channels | 2 | | Output Power | 200 Watts | | Part Number | ZK-TB21 | | Specification Met | CE, FCC, RoHS, WEEE | | UPC | 194852390263 | | Voltage | 24 Volts | ## Product Details - **Item dimensions L x W x H:** 4.72 x 3.94 x 0.87 inches - **Manufacturer:** DAMGOO - **Maximum Supply Voltage:** 24 Volts (DC) - **Minimum Supply Voltage:** 12 Volts (DC) - **Voltage:** 24 Volts ## Images ![200W Audio Amplifier Board - Image 1](https://m.media-amazon.com/images/I/71m6lcMyQ2L.jpg) ![200W Audio Amplifier Board - Image 2](https://m.media-amazon.com/images/I/813AQTr1PCL.jpg) ![200W Audio Amplifier Board - Image 3](https://m.media-amazon.com/images/I/71uSbObYhQL.jpg) ![200W Audio Amplifier Board - Image 4](https://m.media-amazon.com/images/I/71x12KfkweL.jpg) ![200W Audio Amplifier Board - Image 5](https://m.media-amazon.com/images/I/71WaCuexZtL.jpg) ## Available Options This product comes in different **Model** options. ## Questions & Answers **Q: Does it come with a power cord ?** A: No, you can use a 19v laptop charger but to get this thing fed what it needs buy a 24v 250watt power supply. **Q: What is the low pass cut off for the subwoofer?** A: The frequency of the bass channel is 20hz-200hz **Q: Would I be able to hook up a regular speaker to the "subwoofer" channel, if I wanted to individually control the volume of that one speaker?** A: The answer that specifies your frequency limitations is correct. If you connect a full range speaker, it will not sound good. But you can if you don't care about sound quality, in which case you should just go back under your rock and stay there. **Q: I would want to use this for aux input only. can i set it to default to aux input? or do i have to switch from bluetooth to aux each time i power on?** A: It comes default in aux , there is no such switch for it , to answer your question in simple words, when you get it just connect the aux to it and don't werry about nothing else. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent little amp replaces vintage receiver, drives old subwoofer *by R***A on April 2, 2025* I was using a vintage Pioneer 25W/ch receiver for the sound system in the workshop. I also have an old JBL powered subwoofer that had the amp go out, so I decided to order this little amp to see if I could power the old sub with it and at the same time replace the old Pioneer receiver for a little more volume, in addition to the sub added. The final setup: Two existing ceiling speakers, 8 Ohms each, paralleled with two Klipsch bookshelf speakers, 8 Ohms each , for a net 4 Ohms per channel; re-purposed JBL sub that has two 5 Ohm speakers in parallel, so 2.5 Ohms total. Amp is powered by a 24V/100W LED driver. The result: awesome! The bass could be better, but considering that the subs are only 6” diameter, not bad, certainly much better than without the sub. The Klipsch bookshelf speakers add a lot to the midrange and highs, complementing the ceiling speakers. As for the power supply, I first hooked it up with a 24V 60W power supply, and it worked fine, although the subwoofer started to clip at a fairly low volume. The power supply never got warm however. I tried a 24V/100W power supply anyway, and the bass was vastly improved. This tells me that the 60W was not able to supply the current peaks, so the 100W is staying. So, spend a little more and go for the bigger power supply to get more distortion-free bass. What I like about this amp: BT works flawlessly, connecting each time without fail. The range could be better, but understandable since the built in antenna is just a small PCB trace. There is a connector for an external BT antenna if desired. I like the audio controls: Bass frequency cutoff and volume, treble/bass/volume for the stereo channels. The amp is very power efficient, and has more power available than what I need. With a 24V power supply, driving 4 Ohms per channel + 2.5 Ohms subwoofer, it barely gets warm after several hours. My only complaint: The speaker terminals are tiny, so stacking wires greater than 2x 18ga can be difficult. Bottom line: highly recommended. ### ⭐⭐⭐⭐⭐ In......credible *by J***Y on February 8, 2021* I have not taken any pics yet so I will add them when it’s all ready, but I will say that I’m blown away with this little beast. I have been a car audio competitor for around 20 years now and have 2 world titles. I purchased the zx-100zl first to test the waters and still have it as the outside patio stereo and theater system. So I did not hesitate when my finger clicked on the order button for this 3 channel with separate sub unit with the treble, bass, sub volume, cross over control,and main volume knobs, which are very smooth and adjust flawlessly with no static or interference noises rolling out at all. The built in crossover is a little disappointing and is more like a cut frequency and wattage knob. I have hooked up a hand full of subs and pro woofers to see if box design would help or sub specs might be a factor but they all have the same sweet spot and going below that just kills the output, but the sweet spot is right at the spot that it needs to be anyway with every genre I went through, for me anyway. If possible try to get the unit as close to 24v as you can or at least 20v if you want to be able to utilize the units full potential. I am using a small digital voltage regulator or buck unit inline with the 19v laptop charger. That way I can just turn the adjustment knob up or down to go to 24v or down to 9v if I want to for some reason put some small 5w speakers on it, I won’t.. the sound clarity is flawless through the whole scale. Tweet response is on point. Mids and vocals are clear and powerful. If you keep the sub crossover above half way which seems to be around 100hz, you won’t loose any significant power. Over 100hz out of sub starts distorting the lowend vocals anyway so it works fine. I ended up putting a passive sub crossover inline out of the unit anyways just cause I already have some and it seems to really open up the wattage flow that the units crossover was smothering. At the moment I have 4 Yamaha 3 way 100w bookshelf speakers on the 2x50w full range channels and 2 6.5” subwoofers in a down fire custom built ported sub box tuned to 45hz on the 100w sub channel. I have it bluetoothed to my theater in my home office, aka work space, gaming system and second theater room. I can go from a virtual power point webinar to streaming John wick 3 on the 4K, to madden 21 on the xbox one or asphalt 9 on the gaming pc, and this little marvel is crisp, clean, clear, and will have the neighbors yelling at me with no problems. I highly recommend this bad boy even if you don’t need it. You will find a use for it. You will make use for it anyway. It’s that good.. also I would like to give 5 stars to the damgoo team for all the quick responses and customer first mentality that they seem to have perfected and have done nothing less then been amazing and don’t make you feel like just a customer but a personal friend from the first interaction. If everyone conducted business the way they do, the world would be a little nicer to itself.. sorry for the long winded review but how else could I have explained it. Awesome... ### ⭐⭐⭐⭐⭐ Overly impressed, a lot of bang for your buck if you understand speakers & set-up. *by S***X on March 24, 2023* I have been looking at these inexpensive little amps for a few years and never really had a use for one, as I have a pile of older amps around the house for my systems. I have been upgrading my home office and decided it was time to bring some solid music playing into the office, as I do my best work with LOUD music ;-). had a pair of Polk bookshelf speakers that had been sitting in their original box for a few years from when I picked them up on sale from Frys. wanted a small amp to drive these off my PC, Alexa, and TV, and I liked the idea of how small this amp was and could mount it under my desk. had concerns about such a small amp pushing 8-ohm speakers as most folks were using it with 4-ohm set-ups. If I got I could return it it and did not like the sound/power, I could e you do need to do some assembly, and I recommend some felt feet if you plan to put this on a surface. Assembly was easy, and I quickly wired up the Polks. At first, they sounded like crap, but then I started to play with the tone and slowly dialed them in. The Sound got better as time went on. Like most amps/speakers, I find they need a little time to warm up, and the sound gets richer. With just the polls, I got pretty good sound and loud enough to annoy my wife. But, the amp would distort at the highest output. The Polks do not have a very low range, so the base was lacking. This is where I made a mistake when choosing this amp. It has a powered output for the sub amp, so you need a passive sub, and most home subs on the market today are powered. I did not want to spend a fortune on a sub, so I looked into making one and came up with a cost of about $50-80, depending on what drivers I chose. Then it occurred to me that a lot of the 'home media' speaker set-ups come with a passive sub, so off I went to eBay. I bought a refurbed SONY passive sub for $30 delivered on eBay. I got it and hooked it up, and immediately, the package was complete. With the sub hooked up, this amp has plenty of power to drive all 3 speakers and get very loud without any distortion. Still dialing it in some more, but it just gets better. If you want a cheap little set-up that you don't need 'high-end' sound, this is the amp for you. I think I will pick up a few more to drive my outdoor speakers this summer because I can hide the amp just about anywhere and very little heat. I did have to buy a power cord for a few bucks, but you can use an old laptop cord if you have one. ## Frequently Bought Together - 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board with Treble and Bass Control, Dual TPA3116 Chip, DC 12-24V, Bluetooth and AUX Inputs, DIY Wireless Speakers AMP Board, Password Free - APIELE 16mm Latching Push Button Switch 12V DC On Off Black Shell with LED Angel Eye Head for 0.63" Mounting Hole with Wire Socket Plug Self-Locking (Blue/Black Shell) - Digital Low Voltage Protector Disconnect Switch Cut Off 12V Over-Discharge Protection Module for 12-36V Lead Acid Lithium Battery Low Voltage Cutoff for Solar Panel Lighting System Camper --- ## 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.in/products/213403491-200w-audio-amplifier-board](https://www.desertcart.in/products/213403491-200w-audio-amplifier-board) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-05-18*