---
product_id: 449444952
title: "A300 HiFi Power Amplifier, Class D Integrated Amp SDB Sound Effects 2.1 Audio System Hi-Res Audio Receiver RCA/Bluetooth 5.0/USB Input 8 Modes of EQ 165W x 2 THD+N 0.004%(with Remote Control)"
brand: "s.m.s.l"
price: "$459.92"
currency: USD
in_stock: true
reviews_count: 13
category: "S.M.S.L"
url: https://virgin.desertcart.com/products/449444952-a300-hifi-power-amplifier-class-d-integrated-amp-sdb-sound
store_origin: VG
region: British Virgin Islands
---

# Hi-Res Audio certified clarity Bluetooth 5.0 wireless range 165W x 2 powerful output A300 HiFi Power Amplifier, Class D Integrated Amp SDB Sound Effects 2.1 Audio System Hi-Res Audio Receiver RCA/Bluetooth 5.0/USB Input 8 Modes of EQ 165W x 2 THD+N 0.004%(with Remote Control)

**Brand:** s.m.s.l
**Price:** $459.92
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your sound game—because your ears deserve the best.

## Quick Answers

- **What is this?** A300 HiFi Power Amplifier, Class D Integrated Amp SDB Sound Effects 2.1 Audio System Hi-Res Audio Receiver RCA/Bluetooth 5.0/USB Input 8 Modes of EQ 165W x 2 THD+N 0.004%(with Remote Control) by s.m.s.l
- **How much does it cost?** $459.92 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [virgin.desertcart.com](https://virgin.desertcart.com/products/449444952-a300-hifi-power-amplifier-class-d-integrated-amp-sdb-sound)

## 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

- • **Customizable EQ Modes:** 8 EQ presets let you tailor your soundscape to every mood and genre effortlessly.
- • **Sleek, Durable Design:** Aluminum CNC-machined panel with remote control combines style and convenience for the modern audiophile.
- • **Immersive 2.1 Audio Setup:** Pair with subwoofers for deep, room-filling bass that transforms your space.
- • **Seamless Wireless Streaming:** Bluetooth 5.0 ensures stable, high-quality audio from any device—cut the cords, not the quality.
- • **Precision German Infineon Chip:** Experience crystal-clear sound with ultra-low distortion (THD+N 0.004%).

## Overview

The S.M.S.L A300 is a Class D integrated HiFi amplifier delivering 165W per channel with ultra-low distortion, featuring a German Infineon chip and Japanese volume control for pristine sound. It supports 2.1 system setups with subwoofer output, Bluetooth 5.0 wireless streaming, and 8 EQ modes, all housed in a premium aluminum chassis with remote control for effortless operation.

## Description

desertcart.com: S.M.S.L A300 HiFi Power Amplifier, Class D Integrated Amp SDB Sound Effects 2.1 Audio System Hi-Res Audio Receiver RCA/Bluetooth 5.0/USB Input 8 Modes of EQ 165W x 2 THD+N 0.004%(with Remote Control) : Electronics

Review: I'm impressed - As an aged audiophile, I've been playing with mid-fi equipment for over 50 years. I've had amps from Rotel, Acdom, Marantz, Analogue Audio and others. Most recently I've been using a Schiit Audio Saga+ preamp with a Sonance power amp and KEF Q350 speakers. The Sonance is a quality amp, if relatively unknown. I was looking to reduce the footprint of my setup while retaining reasonable power. So I decided to try the A300. Swapped it in for the Sonance and started playing. Wow!! Another reviewer said the A300 was smooth, and that's pretty much the case. Smoother at least than the Sonance. I played Hi Res streamed from Qobuz and some CDs. Every part of the range was great. I wasn't hearing bass, mids and treble - I was hearing a cohesive one-piece sound. Not edgy like the Sonance but complete with fine detail and well placed instruments in a beautiful soundstage. Utilizing the built-in high pass filter made integrating a powered sub easy and very effective. I experimented by removing the Saga preamp and plugging my sources directly into the A300. An even more resolving presentation. Even though the Saga is a passive preamp, in comparison to the A300 in direct mode the Saga seemed to add a slightly soft glow to the sound, not at all unpleasant but without the detail and clear top end of the A300. The A300 is quiet and runs cool. The EQ menus are nice to have though I use Direct Mode most of the time. The proprietary SDB mode is akin to a loudness contour and is helpful at lower volumes. The Soft mode can help tame down an overly hot recording. As mentioned the high pass filter is great. I don't object to the blue info screen although SMSL has more attractive screens in lots of its other equipment. So that will be on the short list of things to be improved. The remote is simple and effective but it does need precise line-of-sight to the amp. For my purposes a third RCA input would be valuable but most people should be happy with the two provided. I don't use Bluetooth but I tried it out and it works OK; convenient, but no match for my DAC, CD, or turntable. This is great Amp. Period. Honestly, it sounds superior to any amp I ever used. My KEFs never sounded this good. I had tried an Aiyima A07 amp complete with Sparkos discrete op amp upgrade and while it worked well it always lacked the detail and beautiful top end of the A300. Seems like the Infineon chip in the A300 is as good as reported. The A300 size also helped me clean up my stereo layout. I am very impressed and very happy. My thanks to iiWi and other YouTube reviewers that recommended the SMSL A300.
Review: Incredible amp for bookshelf speakers. Great sound, low price. - This thing competes with amps along the lines of the loxjie A30 and Topping MX5. It has more power than the Loxjie and is cheaper than the Topping. The sound out of it is incredible. I'm no audiophile and I'm confident that this is as good as my ear is capable of hearing, so anything higher end would just be a waste. It has power to spare for a typical stereo setup. I have a pair of OLD (90's?) Bose 301 Continental speakers set up with it (8 ohm speakers). They are loud enough to be heard throughout the house by volume 30-35... and it goes to 60. 10-12 is a nice low level background level. I also picked up a Nobsound G2 mono sub amp to use an old passive sub-woofer with the sub out on this, and that pairing is great. I'm running this as speakers for a desktop PC setup and connected with the included USB-A to USB-A cable (a ridiculous setup, but it works... seriously though has SMSL not heard of USB C???). That worked flawlessly with zero additional setup. In fact Windows is great about switching back to the onboard sound if I just turn off the amp or switch inputs, so it defaults back to my headphones which is nice (since this doesnt have a headphone amp built in, which is fine for my needs). Having some of the additional features not always found in an amp at this price range is nice too (like high pass for using a sub, bridge mode even if Im not planning to use it, etc). About the only thing I guess is lacking compared to similar amps is a more functional display. It just shows you volume, not the extended information some show. I'm OK with that as it just sits off to my right and I dont really need to know anything by looking at it. Something to note, though. Really, though, I cant speak highly enough of this. It's functional, sounds great, and is a great price for what you get. Its a no brainer if the feature set fits your needs.

## Features

- Sound Quality and Chip Advantages: Hi-Res Audio certified, equipped with a German Infineon digital high-power amplifier chip and a Japanese NJRC NJW1194 electronic volume control chip, providing hardware support for high-fidelity sound quality.
- Power and Bridging Function: Supports bridged (BTL) mode, enabling the output of a single-channel signal with higher power, easily driving large-diameter speakers and meeting the needs of high-power audio scenarios.
- 2.1 System Setup Capability: Features a subwoofer signal preamp output, which can be paired with active subwoofers and passive speakers to form a 2.1 audio system, enriching low-frequency performance and enhancing the immersive audio-visual experience.
- Bluetooth 5.0 Wireless Experience: Supports Bluetooth 5.0 reception, offering longer transmission distances and lower sound quality loss, facilitating wireless audio transmission to devices such as mobile phones and computers.
- User-Friendly Operation and Design: Equipped with a full-function remote control for simple and intuitive operation; the panel is made of aluminum alloy CNC machined, with a superior feel and durability, while also incorporating audiophile-grade audio components and a high-quality switching power supply, ensuring performance from the smallest details.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B2ZD2CLC |
| Best Sellers Rank | #112,954 in Electronics ( See Top 100 in Electronics ) #693 in Audio Component Amplifiers |
| Brand | S.M.S.L |
| Brand Name | S.M.S.L |
| Customer Reviews | 4.4 out of 5 stars 123 Reviews |
| Global Trade Identification Number | 06970141857846 |
| Item Dimensions | 8.27 x 7.48 x 1.57 inches |
| Item Weight | 1.6 kg |
| Item dimensions L x W x H | 8.27 x 7.48 x 1.57 inches |
| Manufacturer | S.M.S.L-A300 |
| Maximum Output Power | 330 watts |
| Model | A300-BK-US |
| Mounting Type | Surface Mount |
| Number of Channels | 2 |
| Number of Items | 1 |
| Package Type Name | cardboard box" or "shipping box |
| Part Number | A300 |
| Specification Met | FCC |
| Voltage | 220 volts_of_alternating_current |

## Product Details

- **Brand:** S.M.S.L
- **Item dimensions L x W x H:** 8.27 x 7.48 x 1.57 inches
- **Manufacturer:** S.M.S.L-A300
- **Mounting Type:** Surface Mount
- **Voltage:** 220 volts_of_alternating_current

## Images

![A300 HiFi Power Amplifier, Class D Integrated Amp SDB Sound Effects 2.1 Audio System Hi-Res Audio Receiver RCA/Bluetooth 5.0/USB Input 8 Modes of EQ 165W x 2 THD+N 0.004%(with Remote Control) - Image 1](https://m.media-amazon.com/images/I/41l9czvYkFL.jpg)

## Questions & Answers

**Q: Can you connect four speakers?**
A: Only 2

**Q: Can all the filters be disabled to run two full range signals to the two main speakers and a full range signal to a a center speaker ? How?**
A: This is 2 channel not a three channel so no you cannot run to two main speakers and a center… you would need a 3 or 5 channel amp … emotiva is one of only three channel Amps

**Q: Which is the A300 Amplifier chip? MA12070 or MA5332M?**
A: Can’t remember exactly which one as far as I know it’s a German in Infineod chip

**Q: Can you use your TV remote or a universal remote with this?**
A: No

## Customer Reviews

### ⭐⭐⭐⭐⭐ I'm impressed
*by R***I on June 18, 2023*

As an aged audiophile, I've been playing with mid-fi equipment for over 50 years. I've had amps from Rotel, Acdom, Marantz, Analogue Audio and others. Most recently I've been using a Schiit Audio Saga+ preamp with a Sonance power amp and KEF Q350 speakers. The Sonance is a quality amp, if relatively unknown. I was looking to reduce the footprint of my setup while retaining reasonable power. So I decided to try the A300. Swapped it in for the Sonance and started playing. Wow!! Another reviewer said the A300 was smooth, and that's pretty much the case. Smoother at least than the Sonance. I played Hi Res streamed from Qobuz and some CDs. Every part of the range was great. I wasn't hearing bass, mids and treble - I was hearing a cohesive one-piece sound. Not edgy like the Sonance but complete with fine detail and well placed instruments in a beautiful soundstage. Utilizing the built-in high pass filter made integrating a powered sub easy and very effective. I experimented by removing the Saga preamp and plugging my sources directly into the A300. An even more resolving presentation. Even though the Saga is a passive preamp, in comparison to the A300 in direct mode the Saga seemed to add a slightly soft glow to the sound, not at all unpleasant but without the detail and clear top end of the A300. The A300 is quiet and runs cool. The EQ menus are nice to have though I use Direct Mode most of the time. The proprietary SDB mode is akin to a loudness contour and is helpful at lower volumes. The Soft mode can help tame down an overly hot recording. As mentioned the high pass filter is great. I don't object to the blue info screen although SMSL has more attractive screens in lots of its other equipment. So that will be on the short list of things to be improved. The remote is simple and effective but it does need precise line-of-sight to the amp. For my purposes a third RCA input would be valuable but most people should be happy with the two provided. I don't use Bluetooth but I tried it out and it works OK; convenient, but no match for my DAC, CD, or turntable. This is great Amp. Period. Honestly, it sounds superior to any amp I ever used. My KEFs never sounded this good. I had tried an Aiyima A07 amp complete with Sparkos discrete op amp upgrade and while it worked well it always lacked the detail and beautiful top end of the A300. Seems like the Infineon chip in the A300 is as good as reported. The A300 size also helped me clean up my stereo layout. I am very impressed and very happy. My thanks to iiWi and other YouTube reviewers that recommended the SMSL A300.

### ⭐⭐⭐⭐⭐ Incredible amp for bookshelf speakers. Great sound, low price.
*by B***W on February 12, 2023*

This thing competes with amps along the lines of the loxjie A30 and Topping MX5. It has more power than the Loxjie and is cheaper than the Topping. The sound out of it is incredible. I'm no audiophile and I'm confident that this is as good as my ear is capable of hearing, so anything higher end would just be a waste. It has power to spare for a typical stereo setup. I have a pair of OLD (90's?) Bose 301 Continental speakers set up with it (8 ohm speakers). They are loud enough to be heard throughout the house by volume 30-35... and it goes to 60. 10-12 is a nice low level background level. I also picked up a Nobsound G2 mono sub amp to use an old passive sub-woofer with the sub out on this, and that pairing is great. I'm running this as speakers for a desktop PC setup and connected with the included USB-A to USB-A cable (a ridiculous setup, but it works... seriously though has SMSL not heard of USB C???). That worked flawlessly with zero additional setup. In fact Windows is great about switching back to the onboard sound if I just turn off the amp or switch inputs, so it defaults back to my headphones which is nice (since this doesnt have a headphone amp built in, which is fine for my needs). Having some of the additional features not always found in an amp at this price range is nice too (like high pass for using a sub, bridge mode even if Im not planning to use it, etc). About the only thing I guess is lacking compared to similar amps is a more functional display. It just shows you volume, not the extended information some show. I'm OK with that as it just sits off to my right and I dont really need to know anything by looking at it. Something to note, though. Really, though, I cant speak highly enough of this. It's functional, sounds great, and is a great price for what you get. Its a no brainer if the feature set fits your needs.

### ⭐⭐⭐⭐⭐ Love this little unit!
*by L***A on September 5, 2026*

I have had this for a few years now and Its been great!! The Cheap Audio Man on Youtube had recommended SMSL..very happy with this purchase!

## Frequently Bought Together

- S.M.S.L A300 HiFi Power Amplifier, Class D Integrated Amp SDB Sound Effects 2.1 Audio System Hi-Res Audio Receiver RCA/Bluetooth 5.0/USB Input 8 Modes of EQ 165W x 2 THD+N 0.004%(with Remote Control)
- Micca 14 Gauge Pure Copper Speaker Wire, 6 Feet (2 Meters 6.6ft Actual), 2 Pack Pair, Gold Plated Banana Plugs Connectors, Soldered Construction, Slim Design, 245 Strands, for Stereo or Home Theater
- Micca RB42 Reference Bookshelf Speaker with 4-Inch Woofer and Silk Tweeter (Dark Walnut, Pair)

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*Product available on Desertcart British Virgin Islands*
*Store origin: VG*
*Last updated: 2026-10-14*