---
product_id: 338169749
title: "A12 Home Audio Amplifier Stereo Receivers Bluetooth 5.0 Mini HiFi Class D Integrated 2 Channel Power Amp with Bass and Treble Control 80Wx2 for Home Speakers MA12070 (with Power Supply)"
brand: "s.m.s.l"
price: "₩266025"
currency: KRW
in_stock: true
reviews_count: 13
category: "S.M.S.L"
url: https://www.desertcart.kr/products/338169749-a12-home-audio-amplifier-stereo-receivers-bluetooth-5-0-mini
store_origin: KR
region: South Korea
---

# Bluetooth 5.0 seamless range up to 32ft 80W RMS x2 power output ±12 level bass & treble control A12 Home Audio Amplifier Stereo Receivers Bluetooth 5.0 Mini HiFi Class D Integrated 2 Channel Power Amp with Bass and Treble Control 80Wx2 for Home Speakers MA12070 (with Power Supply)

**Brand:** s.m.s.l
**Price:** ₩266025
**Availability:** ✅ In Stock

## Summary

> 🎵 Elevate your sound game—compact power, endless vibes.

## Quick Answers

- **What is this?** A12 Home Audio Amplifier Stereo Receivers Bluetooth 5.0 Mini HiFi Class D Integrated 2 Channel Power Amp with Bass and Treble Control 80Wx2 for Home Speakers MA12070 (with Power Supply) by s.m.s.l
- **How much does it cost?** ₩266025 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/338169749-a12-home-audio-amplifier-stereo-receivers-bluetooth-5-0-mini)

## Best For

- s.m.s.l enthusiasts

## Why This Product

- Trusted s.m.s.l brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ready for Every Setup:** Versatile inputs including USB, RCA, and Bluetooth plus built-in protection circuits make this mini amp the ideal partner for your home audio system.
- • **Audiophile-Grade Build:** Crafted with German Infineon MA12070 chip, gold-plated terminals, and premium audio components for distortion-free, immersive sound.
- • **Powerhouse Performance:** Delivers a robust 80W RMS per channel to effortlessly drive your home speakers with crystal-clear sound and dynamic range.
- • **Next-Gen Wireless Freedom:** Bluetooth 5.0 ensures stable, high-fidelity streaming from any device within 32 feet—ditch the cables, keep the vibe.
- • **Precision Sound Sculpting:** Tailor your audio experience with tactile, CNC-machined aluminum knobs offering ±12 level bass and treble adjustments for perfect tonal balance.

## Overview

The S.M.S.L A12 is a compact, high-performance Class D stereo amplifier featuring dual 80W RMS output channels powered by the German Infineon MA12070 chip. Equipped with Bluetooth 5.0 for seamless wireless streaming up to 32 feet, it offers precise bass and treble control via premium aluminum knobs. Designed with audiophile-grade components and multiple input options (USB, RCA, Bluetooth), this mini amp delivers clear, distortion-free sound while protecting your system with built-in safety circuits. Perfect for millennials seeking a sleek, powerful audio upgrade that fits any modern home setup.

## Description

Product description Integrated Hifi audio amplifier S.M.S.L A12 is a class d amplifier for passive speaker. It is compact powerful and competitive. Advanced circuit design makes the sound impeccable. The main Bluetooth input and RCA input can meet most of your needs, and it also comes with usb Input and U disk playback. Classic manual control, more stable, Patented SDB sound and+-12 level treble and bass adjustment, allowing you to enjoy high-quality music. (When switching to USB input, you may need to re-plug the USB cable or restart. That is determined by the chip, since the chip has priority functions. Please read the manual carefully before use). Small Bluetooth 5.0 Stereo Audio Amplifier 2 Channel for Passive Speaker Our Story S.M.S.L was founded in 2009 which located in Shenzhen. Our company is specialized in the power amplifier, audio DAC, stereo headphone amplifier, and with own R＆D, manufacturing and marketing team. More than10 senior engineers with rich experience in product development and professional management are working hard to ensure each product is qualified and works excellent. We follow the rules of "quality-based, technology-guidance, customer central". S.M.S.L A12 Amplifier New technology class d amplifier chip Infineon's MA12070 adopts a new power amplifier architecture MERUS, which is completely difference from the traditional class D power amplifier. In this desigh, each half-bridge uses four mosfets(M1-M4), and the capacitor "flying" between them as an additional power supply. Rail to generate a three-level output signal at the output switch node. Package Included Audio Amplifier-1 24V Power Supply-1 Anti-interference USB-A cable-1 BT Antenna-1 User Manul-1 Bluetooth 5.0 Input Bluetooth 5.0 Input, longer transmission distance, works with iPhone, Android, Smartphones, iPad, Tablet PCs etc. In the process of using Bluetooth input, more music details are retained, making the music more delicate and soft. Switch to the BT position, search "SMSL BT5.0C", and pair it easily. Note: If you want to use another device for Bluetooth connection, please turn off your previous Bluetooth device first. Or please use a thin object such as a toothpick to press the button in the "Bluetooth Clear" hole on the back panel for 1 second to clear the bluetooth memory before pairing with other devices. USB audio input support U disk playback USB audio input and support for driver-free use, easily connect the tablet and computer etc. U disk playback: Turn the input selector switch to the USB position, insert the USB flash drive into the USB interface, and A12 will automatically play the audio files in the USB flash drive. Support audio format: MP3 , SBC , WAV , FLAC*(note) Convenient switching Easily turn on/ off the power. Switch input: you can switch USB input to Bluetooth and RCA inputs easily, and freely switch between Bluetooth and RCA inputs. When you switch to USB input from bluetooth and RCA inputs, you may need to re-plug the USB cable or restart the amplifier. That is determined by the chip, since the chip has priority functions. EQ Controls Bass & treble adjustments are ±12 level, perfect knob texture, every time you use the knob, you will feel a strong sense of damping，more stable than remote control. When the bass and treble knobs are adjusted to the 12 o'clock position, the bass and treble are not adjusted. Aluminum CNC processing All aluminum alloy CNC precision processing shell, anodizing technology and chamfering process, exquisite workmanship and delicate touch. 0.005% Low distortion New technology class D power amplifier chip, higher quality, efficiency up to 92%, further reducing power consumption. THD+N: 0.005%. Sepcification Inputs ：Bluetooth 5.0, RCA , USB THD+N: 0.005% SNR: 102dB Channel separation: 98dB Output Power: 80Wx2(4Ω) / 40Wx2(8Ω) Input sensitivity/input impedance: 190mV / 40kΩ Power Consumption: 35W(Normal Volume) Size: 5.47x5x1.38 inches (WxHxD) Amplifer Weight: 382 g Support U disk playback Note: The two specifications of WAV and FLAC must use a USB flash drive with a higher transmission speed because of the higher transmission bit rate, otherwise it may cause the music playback to be interrupted.The U disk only supports FAT and FAT32 formats, and the maximum support is 64G . And the order is arranged according to the time when they are stored in the USB flash drive.

Review: Great little amp - I've had this amp about 18 months now and it's still going strong so I thought a quick review might help others. Highlights: - For inputs, there is a line in (phonos), USB port and Bluetooth - Bluetooth works well with decent range. I frequently have the laptop 10-15 feet away and it works without drop outs - Line in works great with a turntable or other line out equipment (CD, DVD, TV, etc.) - Sound quality is strong and clear with good stereo separation. - There are bass/treble controls (see lowlights) - Silent when no signal being received with low power consumption. Can just leave switched on. Lowlights: - The sound is colored with bass frequencies being significantly boosted so the 'neutral' sound is definitely not. - There's no play management for the USB input so it will just play whatever is on the USB in a sort-of order. Best not to use nested folders, etc. Things to know about: - It's not a PA amp so best not to expect too much, but it's good at providing a balanced sound that can generally fill a decent sized room. Would love to see a similar size unit with one additional input (like a 3.5mm line in). Overall, it's a great amp. I was pleasantly surprised by the sound.
Review: Amp makes my speakers sound great, but internal DAC is terrible - This amp works very well with my KEF Q150s, and it sounds noticeably better than my previous cheap amp, especially with bass-heavy music. I also love that I can control the bass/treble dials on the fly, I find myself using it rather frequently to make my music sound better when my apartment's noisy heater turns itself on. However, when I used the USB connection my music was choppy, laggy, and filled with clicking sounds. I tried using a separate cheap DAC on the line-in input and it sounded great once again. I was hoping for an all-in-one solution for my desktop speaker setup, so I wanted an amp with a good internal DAC. My recommendation: don't buy this if you are going to use the USB connection.

## Features

- 【German Infineon's IC】 This Mini home stereo audio amplifier Receiver, uses Infineon's MA12070 chip, 0.005% low distortion.The audio amplifier provides you with 80W RMS x2 which can easily drive 280 watts(8 ohm), 320 watts(4 ohm) passive speakers to enjoy high-quality music, and video.
- 【Bluetooth 5.0 Input】: With the new Bluetooth 5.0 Amplifier technology , In the process of using Bluetooth 5.0 input, more music details are retained, making the music more delicate and soft. For iPhone, Android, Smartphones, iPad, Tablet PCs etc. Barrier-free connection within a distance of 0-32ft.
- 【Bass and Treble Control】: The SMSL Audio BT5.0 stereo amplifier is tailor-made for audiophiles seeking exceptional HiFi sound quality 。Bass & treble adjustments are ±12 level, perfect knob texture, every time you use the knob, you will feel a strong sense of damping, more stable than remote control, all aluminum alloy CNC precision procesing shell.
- 【The Ideal Partner Amplifier For Speakers】: With USB and RCA Inputs, High quality gold-plated terminals, a large number of audio grade components are used to enhance the sound experience, bulit-in perfect protection circuit for overheating, overcurrent, etc. the Bluetooth amp is a powerhouse ，Supports U disk playback
- 【What You Get】: SMSL A12 mini audio amplifier receiver, 24V power supply,USB-A cable, BT antenna, user manul, our worry-free 18-month warranty, and friendly customer service (better to contact us througth desertcart message).PS: We have updated the switch.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0983C2FDJ |
| Best Sellers Rank | #191,599 in Electronics ( See Top 100 in Electronics ) #1,165 in Audio Component Amplifiers |
| Brand Name | S.M.S.L |
| Customer Reviews | 4.2 out of 5 stars 76 Reviews |
| Included Components | product manual,bluetooth antenna, USB-A cable, 24V supply. |
| Item Dimensions | 5 x 5.47 x 1.38 inches |
| Item Weight | 382 Grams |
| Item dimensions L x W x H | 5 x 5.47 x 1.38 inches |
| Manufacturer | Shenzhen Shuangmusanlin Electronic Co.,Ltd |
| Material Type | Aluminum Alloy, Gold, Audio Grade Components |
| Maximum Supply Voltage | 24 Volts |
| Minimum Supply Voltage | 24 Volts |
| Model | A12 |
| Mounting Type | Surface Mount |
| Number of Channels | 2 |
| Output Power | 80 Watts |
| Package Type Name | cardboard box |
| Part Number | A12 |
| Specification Met | FCC |
| Voltage | 24 Volts |

## Product Details

- **Item dimensions L x W x H:** 5 x 5.47 x 1.38 inches
- **Manufacturer:** Shenzhen Shuangmusanlin Electronic Co.,Ltd
- **Maximum Supply Voltage:** 24 Volts
- **Minimum Supply Voltage:** 24 Volts
- **Voltage:** 24 Volts

## Images

![A12 Home Audio Amplifier Stereo Receivers Bluetooth 5.0 Mini HiFi Class D Integrated 2 Channel Power Amp with Bass and Treble Control 80Wx2 for Home Speakers MA12070 (with Power Supply) - Image 1](https://m.media-amazon.com/images/I/41zjp4oDA7L.jpg)
![A12 Home Audio Amplifier Stereo Receivers Bluetooth 5.0 Mini HiFi Class D Integrated 2 Channel Power Amp with Bass and Treble Control 80Wx2 for Home Speakers MA12070 (with Power Supply) - Image 2](https://m.media-amazon.com/images/I/51d-GASH9kL.jpg)
![A12 Home Audio Amplifier Stereo Receivers Bluetooth 5.0 Mini HiFi Class D Integrated 2 Channel Power Amp with Bass and Treble Control 80Wx2 for Home Speakers MA12070 (with Power Supply) - Image 3](https://m.media-amazon.com/images/I/51VQZA8DDqL.jpg)
![A12 Home Audio Amplifier Stereo Receivers Bluetooth 5.0 Mini HiFi Class D Integrated 2 Channel Power Amp with Bass and Treble Control 80Wx2 for Home Speakers MA12070 (with Power Supply) - Image 4](https://m.media-amazon.com/images/I/51JIumpf3wL.jpg)
![A12 Home Audio Amplifier Stereo Receivers Bluetooth 5.0 Mini HiFi Class D Integrated 2 Channel Power Amp with Bass and Treble Control 80Wx2 for Home Speakers MA12070 (with Power Supply) - Image 5](https://m.media-amazon.com/images/I/51qJvyDyvVL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great little amp
*by O***R on October 21, 2023*

I've had this amp about 18 months now and it's still going strong so I thought a quick review might help others. Highlights: - For inputs, there is a line in (phonos), USB port and Bluetooth - Bluetooth works well with decent range. I frequently have the laptop 10-15 feet away and it works without drop outs - Line in works great with a turntable or other line out equipment (CD, DVD, TV, etc.) - Sound quality is strong and clear with good stereo separation. - There are bass/treble controls (see lowlights) - Silent when no signal being received with low power consumption. Can just leave switched on. Lowlights: - The sound is colored with bass frequencies being significantly boosted so the 'neutral' sound is definitely not. - There's no play management for the USB input so it will just play whatever is on the USB in a sort-of order. Best not to use nested folders, etc. Things to know about: - It's not a PA amp so best not to expect too much, but it's good at providing a balanced sound that can generally fill a decent sized room. Would love to see a similar size unit with one additional input (like a 3.5mm line in). Overall, it's a great amp. I was pleasantly surprised by the sound.

### ⭐⭐⭐⭐ Amp makes my speakers sound great, but internal DAC is terrible
*by A***T on March 22, 2022*

This amp works very well with my KEF Q150s, and it sounds noticeably better than my previous cheap amp, especially with bass-heavy music. I also love that I can control the bass/treble dials on the fly, I find myself using it rather frequently to make my music sound better when my apartment's noisy heater turns itself on. However, when I used the USB connection my music was choppy, laggy, and filled with clicking sounds. I tried using a separate cheap DAC on the line-in input and it sounded great once again. I was hoping for an all-in-one solution for my desktop speaker setup, so I wanted an amp with a good internal DAC. My recommendation: don't buy this if you are going to use the USB connection.

### ⭐⭐⭐⭐⭐ Way better than expected
*by C***R on September 2, 2021*

I was looking for an inexpensive amp for a second system powering some outstanding NHT speakers. I figured this unit would be marginally better than the AD18 powering my television speakers. What sold me on this amp is the Infineon chip that is used in much higher priced amps. I considered the well reviewed Aiyima A07, but without digital inputs it would need an external dac. The SMSL A12 HAS A usb input meaning an internal dac. Frankly at a $90 price I didn't expect the dac to be very good, so when I hooked my amp up to my system I decided to try the usb port thinking I would eventually use my Soundavo dac into the rca input. As soon as I turned it on I was wowed by the spaciousness, tonal accuracy and solid bass coming from my speakers. Sound signature is natural and dynamic. It sounded so good I decided to try it in my main system powering Elac Debut Reference speakers. These speakers can sound a little bloated but with this little amp they became very resolving with a large sound stage and great instrument separation. The internal dac is surprisingly good, and is probably worth the price on its own. I am amazed you can get such quality sound for so little. Solid five stars. Well done SMSL! Update: I experienced an inability to turn off my amplifier as did another reviewer. It started intermittently at first about a week after purchase, then became permanent. I tried to wiggle the switch left and right and up and down to no avail. I even contacted the seller who did not respond to my inquiry. Then I contacted Amazon to try to get the matter resolved, but got involved we in one long negotiation. I gave up and went back to trying to solve the problem. This time I pushed inward on the switch, feeling a springy reaction from the switch. When it bottomed out I switched it off and it worked! I then switched it back on and normally turned it off successfully. It worked normally several times afterward except one time when I successfully used the technique described above. If you are having this problem I suggest you try this method. This is now a minor inconvenience rather than a deal breaker and the sound from it is still outstanding.

## Frequently Bought Together

- S.M.S.L A12 Home Audio Amplifier Stereo Receivers Bluetooth 5.0 Mini HiFi Class D Integrated 2 Channel Power Amp with Bass and Treble Control 80Wx2 for Home Speakers MA12070 (with Power Supply)
- FosPower Banana Plugs 2 Pairs / 4 pcs, Closed Screw 24K Gold Plated Banana Speaker Plug Connectors for Speaker Wire, Wall Plate, Home Theater, Audio/Video Receiver, Amplifiers and Sound Systems

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-05-21*