---
product_id: 638887932
title: "A50 PRO HiFi Power Amplifier, High/Low pass filter 2.1-Channel, Infineon's MA12070P Chip, Bluetooth 5.0/USB/Optical/HDMI/AUX input Passive subwoofer with adjustable volume, with Remote Control"
brand: "s.m.s.l"
price: "HK$1462"
currency: HKD
in_stock: true
reviews_count: 12
category: "S.M.S.L"
url: https://www.desertcart.hk/products/638887932-a50-pro-hifi-power-amplifier-high-low-pass-filter-2
store_origin: HK
region: Hong Kong
---

# 100W passive subwoofer power Bluetooth 5.0 + USB-C + HDMI ARC 10-step High/Low pass filter A50 PRO HiFi Power Amplifier, High/Low pass filter 2.1-Channel, Infineon's MA12070P Chip, Bluetooth 5.0/USB/Optical/HDMI/AUX input Passive subwoofer with adjustable volume, with Remote Control

**Brand:** s.m.s.l
**Price:** HK$1462
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your sound game—because your ears deserve the VIP treatment.

## Quick Answers

- **What is this?** A50 PRO HiFi Power Amplifier, High/Low pass filter 2.1-Channel, Infineon's MA12070P Chip, Bluetooth 5.0/USB/Optical/HDMI/AUX input Passive subwoofer with adjustable volume, with Remote Control by s.m.s.l
- **How much does it cost?** HK$1462 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/638887932-a50-pro-hifi-power-amplifier-high-low-pass-filter-2)

## 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

- • **Compact Yet Mighty:** Sleek surface-mount design packs high-fidelity power and crystal-clear clarity into a space-saving chassis, ideal for stylish modern living spaces.
- • **Precision Audio Tuning:** Fine-tune your sound with 10 adjustable crossover points for high and low pass filters, delivering a perfectly balanced 2.1 channel experience.
- • **Customizable EQ Presets:** Multiple EQ modes plus ±9 level bass and treble adjustments let you craft the perfect sound profile for every music genre or movie night.
- • **Powerful Passive Bass Control:** 100 watts dedicated subwoofer output with independent volume adjustment ensures deep, room-filling bass tailored to your setup.
- • **Seamless Multi-Device Connectivity:** Effortlessly connect via Bluetooth 5.0, USB-C (driver-free), HDMI ARC, optical, or AUX inputs—compatible with virtually all modern audio sources.

## Overview

The S.M.S.L A50 PRO is a compact, high-fidelity 2.1-channel power amplifier featuring Infineon's MA12070P chip, delivering 100W passive subwoofer power with adjustable volume. It offers 10-step high/low pass filters, multiple EQ presets, and versatile connectivity options including Bluetooth 5.0, USB-C, HDMI ARC, optical, and AUX inputs. Designed for audiophiles seeking precise sound customization and seamless integration with modern devices, it comes with a remote control and a 12-month warranty.

## Description

desertcart.com: S.M.S.L A50 PRO HiFi Power Amplifier, High/Low pass filter 2.1-Channel, Infineon's MA12070P Chip, Bluetooth 5.0/USB/Optical/HDMI/AUX input Passive subwoofer with adjustable volume, with Remote Control : Electronics

Review: TV 2.1, skip the Arylic - Skip the Arylic and buy this! Worked for me. HDMI arc, out of the box, plugged in, set Hisense TV audio output to arc and PCM or something, TV speakers off. Done. Only had it for a day but it works great sounds great. Running this to power 2 dayton audio b40s. Simple and small, sounds waaaaaaayy better than the TV speaks. Will add a sub later. The Arylic seemed nice but the HDMI arc did not work, the audio was at 100 and you could barely hear it.
Review: This is a win for tv speaker setup! - Good little amp. Bought to drive my bookshelves and small sub for my tv. Works with arc perfectly, and has plenty of inputs. Booth works easily and the eq, tone controls, and low/high pass filters are helpful for tuning! Provides plenty of power to my 6 ohm speakers and is crystal clear. Can’t beleive how small it is! This is a win! Update - could not get my subwoofer to work as it’s not passive. Disappointing. Not sure why they chose to use speaker level inputs like that instead of just having an RCA sub out. Just be careful with what sub you use - mine doesn’t have high level output so this amp won’t work out after all.

## Features

- Getting ten crossover frequency points adjustable for High-pass and low-pass each.Subwoofer's volume can set it separetely,which perfectly can use well for different main speaker and passive subwoofer and build your real 2.1 speaker system.
- Passive subwoofer with adjustable volume and high power: The A50 Pro provides 100 watts of passive bass output power. lt effortlessly handles various speakers and scenarios, allowing you to adjust the subwoofer volume from S00 to S99 as desired.
- Multiple EQ presets：This digital amplifier features multiple EQ presets, allowing it to adapt to various music styles and provide a diverse listening experience. Additionally, it has bass and treble adjustments, with a customizable range of ±9 levels.
- Higher versatility Supports multiple devices：USB-Cport supports driver-free use.HDMl (ARC) is compatible with most televisions and also equipped with optical input and AUXinput. it's suitable for almost all audio connections.
- 12-month warranty, you can return the item or replace a new one if you have any problems.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D1G7R489 |
| Best Sellers Rank | #31,127 in Electronics ( See Top 100 in Electronics ) #165 in Audio Component Amplifiers |
| Brand | S.M.S.L |
| Date First Available | April 10, 2023 |
| Global Trade Identification Number | 06976935810226 |
| Item Weight | 2.42 pounds |
| Item model number | A50 PRO |
| Manufacturer | SMSL |
| Mounting Type | Surface Mount |
| Number of Channels | 2 |
| Output Power | 100 Watts |
| Package Dimensions | 12.68 x 7.8 x 2.87 inches |
| Package Type Name | box |
| Specification Met | Hifi |
| Voltage | 24 Volts |

## Product Details

- **Brand:** S.M.S.L
- **Manufacturer:** SMSL
- **Mounting Type:** Surface Mount
- **Number of Channels:** 2
- **Voltage:** 24 Volts

## Images

![A50 PRO HiFi Power Amplifier, High/Low pass filter 2.1-Channel, Infineon's MA12070P Chip, Bluetooth 5.0/USB/Optical/HDMI/AUX input Passive subwoofer with adjustable volume, with Remote Control - Image 1](https://m.media-amazon.com/images/I/61r5x4MRIUL.jpg)

## Available Options

This product comes in different **Model** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ TV 2.1, skip the Arylic
*by L***E on December 31, 2025*

Skip the Arylic and buy this! Worked for me. HDMI arc, out of the box, plugged in, set Hisense TV audio output to arc and PCM or something, TV speakers off. Done. Only had it for a day but it works great sounds great. Running this to power 2 dayton audio b40s. Simple and small, sounds waaaaaaayy better than the TV speaks. Will add a sub later. The Arylic seemed nice but the HDMI arc did not work, the audio was at 100 and you could barely hear it.

### ⭐⭐⭐⭐ This is a win for tv speaker setup!
*by M***. on March 10, 2025*

Good little amp. Bought to drive my bookshelves and small sub for my tv. Works with arc perfectly, and has plenty of inputs. Booth works easily and the eq, tone controls, and low/high pass filters are helpful for tuning! Provides plenty of power to my 6 ohm speakers and is crystal clear. Can’t beleive how small it is! This is a win! Update - could not get my subwoofer to work as it’s not passive. Disappointing. Not sure why they chose to use speaker level inputs like that instead of just having an RCA sub out. Just be careful with what sub you use - mine doesn’t have high level output so this amp won’t work out after all.

### ⭐⭐⭐⭐⭐ Fun, affordable, subwoofer amp built in!
*by M***K on February 23, 2025*

This is a fun little Amp! I set it up for Dad as a soundbar replacement and to use with a Bluetooth turntable. We had tried a cheaper BT amp with a remote, but the volume control was spotty and he didn't like that. This one works fantastic, though. Setting up tone controls and navigating menus is a little clunky, but you don't have to do that often. It sounds really good! I haven't compared it to any of my higher end gear in an A-B comparison, but it holds its own with decent speakers. It has a multitude of digital inputs. Bluetooth connects quickly and easily. Remote works well. I like that it has a sub output with switchable and adjustable crossovers, both LPF and HPF so you can really dial it in. We're not utilizing it right now, but I'm tempted to buy one just so I can play with it and a passive sub! The display, although small, is enough to clue you in to what you're doing. It's better than a lot of this type of amp that have no display at all.

## Frequently Bought Together

- S.M.S.L A50 PRO HiFi Power Amplifier, High/Low pass filter 2.1-Channel, Infineon's MA12070P Chip, Bluetooth 5.0/USB/Optical/HDMI/AUX input Passive subwoofer with adjustable volume, with Remote Control
- 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
- Amazon Basics Speaker Cable, Easy Assembly, 16-Gauge, Bronze, 100 ft

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-21*