---
product_id: 563507222
title: "S350HS TPA3251 Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel 220W×2+350W, 12V-38V Audio Power Amplifier Module with Treble and Bass Control,Black (S350HS)"
brand: "dajunguo"
price: "$109.87"
currency: USD
in_stock: true
reviews_count: 6
category: "Dajunguo"
url: https://www.desertcart.us/products/563507222-s350hs-tpa3251-bluetooth-power-amplifier-board-with-subwoofer-2-1
store_origin: US
region: United States of America
---

# 540W peak power output Bluetooth + AUX + USB inputs Independent treble & bass control S350HS TPA3251 Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel 220W×2+350W, 12V-38V Audio Power Amplifier Module with Treble and Bass Control,Black (S350HS)

**Brand:** dajunguo
**Price:** $109.87
**Availability:** ✅ In Stock

## Summary

> 🎵 Crank it up, own the room — power and precision in one sleek amp!

## Quick Answers

- **What is this?** S350HS TPA3251 Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel 220W×2+350W, 12V-38V Audio Power Amplifier Module with Treble and Bass Control,Black (S350HS) by dajunguo
- **How much does it cost?** $109.87 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/563507222-s350hs-tpa3251-bluetooth-power-amplifier-board-with-subwoofer-2-1)

## Best For

- dajunguo enthusiasts

## Why This Product

- Trusted dajunguo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rock-Solid Reliability:** Built-in protections guard against short-circuit, over-current, overheating, and reverse polarity.
- • **Tailor Your Soundscape:** Fine-tune highs and lows with dedicated treble and bass knobs for immersive, layered audio.
- • **Unleash 540W Peak Power:** Experience thunderous 220W×2 + 350W subwoofer output that commands any space.
- • **Compact Powerhouse Design:** Sleek 5.9×5.15 inch form factor fits perfectly in custom setups, from desktop rigs to DIY speaker builds.
- • **Seamless Multi-Device Connectivity:** Effortlessly pair via Bluetooth or plug in AUX/USB for ultimate audio versatility.

## Overview

The S350HS TPA3251 Bluetooth Power Amplifier Board delivers a commanding 540W peak output across 2.1 channels (220W×2 + 350W subwoofer) with wide 12-38V DC input compatibility. Featuring Bluetooth, AUX, and USB inputs, plus independent treble and bass controls, it offers versatile, high-fidelity sound customization. Robust protection circuits ensure safe, reliable operation, making it ideal for audiophiles and DIY enthusiasts seeking powerful, clear audio in a compact, surface-mount design.

## Description

Buy S350HS TPA3251 Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel 220W×2+350W, 12V-38V Audio Power Amplifier Module with Treble and Bass Control,Black (S350HS): Amplifiers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: An absolute beast if you support it with the right hardware... - This is probably the 10th "Class D" amplifier card I've bought on desertcart. Being a 3rd generation woodworker, I like to install them into hardwood cigar boxes and put them up For Sale when complete. I even installed one into one of those junky little "Bass Cannon" 15-watt-glorified-toilet-paper-tubes. It isn't junky anymore. IT CRANKS, just like the others. I find that each one is a new "puzzle" in and of itself. I've got a very nice cigar box and a 200 watt unit hooked to this laptop, driving 2 SONY SS-ZX66i BIG bookshelf speakers, and a BOSS 10" DVC subwoofer wired down to 2 ohms, and mounted passively in a downfiring Klipsch box. Some may scream "BLASPHEMY", but the Klipsch speaker was wrecked, and the amp plate was blackened... UPDATE: The two pictures above are the cigar box I mentioned, after removing the 200W board, and modifying the faceplate to fit the new 500W board... I designed the labels myself, printed them on my laser printer, cut them out with a sharp scissors (14 attempts to satisfy my OCD), and glued them in place... It was tough, as this board is bigger than the old one in every direction... I had to modify all my previous wiring to make it fit the back side... It was another GREAT puzzle... So... ...a few weeks ago, "540 Watts" jumped off the desertcart page and bit me. Could it be true?? I thought about it, did some homework, and finally bought one to try it out. Lemme tell all of you: "They" got it RIGHT when "they" designed this little beast of an amplifier, whoever "they" are. This thing is SOOPER LOUD!!! I'm talkin' BLOW THE ROOF OFF loud. And that was using a 24VDC 2A power brick. My 36V 9A MeanWell power supply is on the way. ------------------------- UPDATE: Getting the MeanWell 36VDC power supply from desertcart was like getting a shark to hold still while pulling it's teeth out... But it finally arrived... Lemme tell you about !! W-O-W !! What a ride!! I think I broke a different kind of sound barrier than planes. This amplifier is insanely LOUD, and clear sounding, when you get it dialed in to your taste. I listen to Hard Rock/Metal, and this thing will melt your eardrums. I can't pinpoint what 500 watts actually sounds like, But, it's gotta be close. It's infinitely louder than all the other 200 watt boards I've bought in the past. ------------------------- When I opened the box, it was very well packed in plastic bags and bubble wrap. You have to mount the top and bottom panels onto the amp card, using stand-offs. That's all the assembly there is. I hot-glued the 2 capacitors down, 'cuz they were, well, just not glued down. And I removed the fan/heatsink and repasted the 2 main chips with Arctic MX-4 thermal compound, instead of Chinese toothpaste. It's rather clear sounding, but not the best I've ever heard. But there's ALOT of variables that define "clear" sound. It's not all about the amp itself. The speakers, the subwoofer, the wiring, and the room shape & furniture all play a role in that definition. Hook up junky speakers to it, and you'll get a junky sound. Drive it with 2 amperes, and it'll be cutting out every time you hit the volume or bass. Just like anything else, what you put into it will determine what you get out of it. This new amp may very well replace my first 200 watt amp, described above. UPDATE: IT HAS... 160 watts X 2 (L & R) + 220 watts (Subwoofer) = 540 watts. Now, I know those are PEAK numbers, not RMS. But I'll bet this amp will do every bit of 350 watts solid with the right hardware hooked to it. I found a PEAK->RMS formula that said "...multiply the PEAK wattage by 0.707 to get an approximate RMS wattage..." I don't know how accurate the formula is, but I came up with 380 watts. It's hooked to a pair of large SONY 4 ohm bookshelf speakers, and a BOSS 10" DVC 4 ohm subwoofer, wired down to 2 ohms or less. I can work with the 380 watt estimate. It is SO loud, my dogs got up and walked out of the room. My subwoofer "dances" across the floor. My neighbor called me asking if they opened the Club downstairs early. A friend asked me what I was gonna use it for. I said, "1) disturbing the peace, 2) rattling my windows, 3) melting my eardrums, and 4) taking over the world... MUAHUAHAHAHAHA". For those of you who like it LOUD, and already have or will buy a MEANWELL 36VDC power supply, GET YOU ONE OF THESE BAD BOYS, and CRANK IT UP. For mobile use, a DeWalt 20VMAX 3Ah or 5Ah battery works GREAT, although you won't get the 500 watts out of it. You should definetly use a multi-meter to test the voltage proposed. Anything over 36 volts may cause problems, up to and including failure. BUY ONE, YOU WON'T REGRET IT, UNLESS YOU CAUSE YOURSELF PERMANENT DEAFNESS... AND YET, ANOTHER UPDATE, 1 YEAR LATER: Well, it took me a year, but I did it now... I can only make a presumption about the cause, but I've BLOWN IT OUT... I blew out the subwoofer chip - see the 3rd pic above... Oh well, snot happens... EZ-COME-EZ-GO [Tesla]... My presumption is that having a big 10" dual voice coil subwoofer wired down to 2 ohms (or less) is the most-likely culprit... So, I'm gonna buy another one... And if it lasts me a year, it'll be all good... I'm not really bothered by it, because it has rattled my eardrums and my windows very nicely for the last year, and I know another one will do the same... No harm, No foul... Good Day!!!
Review: Great value for money - The S220HS 2.1 Channel Bluetooth Power Amplifier Board is an absolute gem! Its small form factor makes it perfect for compact setups, yet it packs an incredible punch in terms of performance. At such a reasonable price, this amplifier is truly a fantastic value for money. The sound quality is exceptional, especially when paired with a subwoofer—it easily outperforms many expensive mainstream brands. The bass response and clarity are phenomenal, delivering a rich and immersive audio experience. Just be sure to use a high-quality power supply to unlock its full potential. What impressed me the most is the stellar customer support. I had a few questions about the setup, and the team responded immediately with clear and helpful advice. Their dedication to customer satisfaction is commendable. If you're looking for a high-performance, affordable amplifier board, the S220HS is a no-brainer. Highly recommended!

## Features

- 【TPA3251 HIFI CHIP】The TPA3251 Chip Solution: Stereo 2.1channel Output to Ensure Continuous Serial High-power Operation, Wide Voltage Input DC: 12-38V,This power amplifier board uses two TPA3251 high-fidelity maximum output power up to 220W*2+350W.
- 【MULTIPLE INPUT METHOD】The S350HS has multiple input methods such as Bluetooth input, AUX input, and USB drive input. The vast majority of devices can be used, such as mobile phones, televisions, laptops, etc., making it easy to connect and use.
- 【TREBLE & BASS CONTROL】If you are tired of an amplifier with only one volume knob, then you feel right, because you have further requirements for audio. By adjusting the high and low frequency knobs of the S350HS power amplifier board, you can make the sound more layered and make the bass more shocking.
- 【PROTECTION FUNCTION】S350HS Bluetooth power amplifier board has multiple protection mechanisms to ensure its safe operation. It has short-circuit protection, over-current, over-heat, and anti-reverse protection. When an overload occurs, the device reports the fault condition to the processor to protect itself from damage
- 【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 | B0CHF6MML7 |
| Best Sellers Rank | #20,955 in Electronics ( See Top 100 in Electronics ) #94 in Audio Component Amplifiers |
| Brand | DAJUNGUO |
| Customer Reviews | 4.3 4.3 out of 5 stars (503) |
| Date First Available | November 2, 2021 |
| Global Trade Identification Number | 00194852393363 |
| Item Weight | 11.5 ounces |
| Item dimensions L x W x H | 5.9 x 5.15 x 1.02 inches |
| Item model number | S350HS |
| Manufacturer | DAJUNGUO |
| Material | metal, plastic |
| Maximum Supply Voltage | 36 Volts (DC) |
| Minimum Supply Voltage | 12 Volts (DC) |
| Mounting Type | Surface Mount |
| Number of Channels | 2 |
| Output Power | 220220350 Watts |
| Package Type Name | unassembled kit |
| Product Dimensions | 5.9 x 5.15 x 1.02 inches |
| Specification Met | CE |
| UPC | 194852393714 194852393363 |
| Voltage | 15 Volts (DC) |

## Product Details

- **Item dimensions L x W x H:** 5.9 x 5.15 x 1.02 inches
- **Manufacturer:** DAJUNGUO
- **Maximum Supply Voltage:** 36 Volts (DC)
- **Minimum Supply Voltage:** 12 Volts (DC)
- **Voltage:** 15 Volts (DC)

## Images

![S350HS TPA3251 Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel 220W×2+350W, 12V-38V Audio Power Amplifier Module with Treble and Bass Control,Black (S350HS) - Image 1](https://m.media-amazon.com/images/I/71nqfZS9l3L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ An absolute beast if you support it with the right hardware...
*by C***. on July 28, 2022*

This is probably the 10th "Class D" amplifier card I've bought on Amazon. Being a 3rd generation woodworker, I like to install them into hardwood cigar boxes and put them up For Sale when complete. I even installed one into one of those junky little "Bass Cannon" 15-watt-glorified-toilet-paper-tubes. It isn't junky anymore. IT CRANKS, just like the others. I find that each one is a new "puzzle" in and of itself. I've got a very nice cigar box and a 200 watt unit hooked to this laptop, driving 2 SONY SS-ZX66i BIG bookshelf speakers, and a BOSS 10" DVC subwoofer wired down to 2 ohms, and mounted passively in a downfiring Klipsch box. Some may scream "BLASPHEMY", but the Klipsch speaker was wrecked, and the amp plate was blackened... UPDATE: The two pictures above are the cigar box I mentioned, after removing the 200W board, and modifying the faceplate to fit the new 500W board... I designed the labels myself, printed them on my laser printer, cut them out with a sharp scissors (14 attempts to satisfy my OCD), and glued them in place... It was tough, as this board is bigger than the old one in every direction... I had to modify all my previous wiring to make it fit the back side... It was another GREAT puzzle... So... ...a few weeks ago, "540 Watts" jumped off the Amazon page and bit me. Could it be true?? I thought about it, did some homework, and finally bought one to try it out. Lemme tell all of you: "They" got it RIGHT when "they" designed this little beast of an amplifier, whoever "they" are. This thing is SOOPER LOUD!!! I'm talkin' BLOW THE ROOF OFF loud. And that was using a 24VDC 2A power brick. My 36V 9A MeanWell power supply is on the way. ------------------------- UPDATE: Getting the MeanWell 36VDC power supply from Amazon was like getting a shark to hold still while pulling it's teeth out... But it finally arrived... Lemme tell you about !! W-O-W !! What a ride!! I think I broke a different kind of sound barrier than planes. This amplifier is insanely LOUD, and clear sounding, when you get it dialed in to your taste. I listen to Hard Rock/Metal, and this thing will melt your eardrums. I can't pinpoint what 500 watts actually sounds like, But, it's gotta be close. It's infinitely louder than all the other 200 watt boards I've bought in the past. ------------------------- When I opened the box, it was very well packed in plastic bags and bubble wrap. You have to mount the top and bottom panels onto the amp card, using stand-offs. That's all the assembly there is. I hot-glued the 2 capacitors down, 'cuz they were, well, just not glued down. And I removed the fan/heatsink and repasted the 2 main chips with Arctic MX-4 thermal compound, instead of Chinese toothpaste. It's rather clear sounding, but not the best I've ever heard. But there's ALOT of variables that define "clear" sound. It's not all about the amp itself. The speakers, the subwoofer, the wiring, and the room shape & furniture all play a role in that definition. Hook up junky speakers to it, and you'll get a junky sound. Drive it with 2 amperes, and it'll be cutting out every time you hit the volume or bass. Just like anything else, what you put into it will determine what you get out of it. This new amp may very well replace my first 200 watt amp, described above. UPDATE: IT HAS... 160 watts X 2 (L & R) + 220 watts (Subwoofer) = 540 watts. Now, I know those are PEAK numbers, not RMS. But I'll bet this amp will do every bit of 350 watts solid with the right hardware hooked to it. I found a PEAK->RMS formula that said "...multiply the PEAK wattage by 0.707 to get an approximate RMS wattage..." I don't know how accurate the formula is, but I came up with 380 watts. It's hooked to a pair of large SONY 4 ohm bookshelf speakers, and a BOSS 10" DVC 4 ohm subwoofer, wired down to 2 ohms or less. I can work with the 380 watt estimate. It is SO loud, my dogs got up and walked out of the room. My subwoofer "dances" across the floor. My neighbor called me asking if they opened the Club downstairs early. A friend asked me what I was gonna use it for. I said, "1) disturbing the peace, 2) rattling my windows, 3) melting my eardrums, and 4) taking over the world... MUAHUAHAHAHAHA". For those of you who like it LOUD, and already have or will buy a MEANWELL 36VDC power supply, GET YOU ONE OF THESE BAD BOYS, and CRANK IT UP. For mobile use, a DeWalt 20VMAX 3Ah or 5Ah battery works GREAT, although you won't get the 500 watts out of it. You should definetly use a multi-meter to test the voltage proposed. Anything over 36 volts may cause problems, up to and including failure. BUY ONE, YOU WON'T REGRET IT, UNLESS YOU CAUSE YOURSELF PERMANENT DEAFNESS... AND YET, ANOTHER UPDATE, 1 YEAR LATER: Well, it took me a year, but I did it now... I can only make a presumption about the cause, but I've BLOWN IT OUT... I blew out the subwoofer chip - see the 3rd pic above... Oh well, snot happens... EZ-COME-EZ-GO [Tesla]... My presumption is that having a big 10" dual voice coil subwoofer wired down to 2 ohms (or less) is the most-likely culprit... So, I'm gonna buy another one... And if it lasts me a year, it'll be all good... I'm not really bothered by it, because it has rattled my eardrums and my windows very nicely for the last year, and I know another one will do the same... No harm, No foul... Good Day!!!

### ⭐⭐⭐⭐⭐ Great value for money
*by P***S on January 17, 2025*

The S220HS 2.1 Channel Bluetooth Power Amplifier Board is an absolute gem! Its small form factor makes it perfect for compact setups, yet it packs an incredible punch in terms of performance. At such a reasonable price, this amplifier is truly a fantastic value for money. The sound quality is exceptional, especially when paired with a subwoofer—it easily outperforms many expensive mainstream brands. The bass response and clarity are phenomenal, delivering a rich and immersive audio experience. Just be sure to use a high-quality power supply to unlock its full potential. What impressed me the most is the stellar customer support. I had a few questions about the setup, and the team responded immediately with clear and helpful advice. Their dedication to customer satisfaction is commendable. If you're looking for a high-performance, affordable amplifier board, the S220HS is a no-brainer. Highly recommended!

### ⭐⭐⭐⭐⭐ Good sound quality, nice and small. Bang for your buck
*by T***G on October 29, 2025*

This little amp can put out some good sound. I used this with my old Bose cube speakers, got 4 of them hooked up and a subwoofer.. for the price and sound it’s totally worth it. Wish it was 5+1 though, that would be awesome. But it works well for the price! I can’t find an app for this unfortunately.. I thought there was one, but I searched everywhere and found nothing. Oh well

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-12*