---
product_id: 680234720
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: "£142.64"
currency: GBP
in_stock: true
reviews_count: 5
category: "S.M.S.L"
url: https://www.desertcart.co.uk/products/680234720-a50-pro-hifi-power-amplifier-high-low-pass-filter-2
store_origin: GB
region: United Kingdom
---

# 100W passive subwoofer power Multi-input USB-C, HDMI eARC, Optical, AUX 10 crossover freq points 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:** £142.64
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your sound game with precision and power — don’t just listen, experience it!

## 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?** £142.64 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/680234720-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

- • **Precision Bass Control:** Fine-tune your subwoofer volume independently for a perfect 2.1 system experience.
- • **Versatile Connectivity:** Seamlessly connect TVs, PCs, and audio devices via USB-C, HDMI eARC, Optical, and AUX inputs.
- • **Customizable Sound Profiles:** Multiple EQ presets plus ±9 level bass and treble adjustments to match your music vibe.
- • **User-Friendly Remote Control:** Effortlessly adjust settings from across the room, making your audio setup truly hands-free.
- • **Powerful Passive Subwoofer Output:** Delivers up to 100 watts of clean, dynamic bass to energize your listening space.

## Overview

The S.M.S.L A50 PRO is a high-fidelity 2.1-channel power amplifier featuring Infineon's MA12070P chip and Bluetooth 5.0. It offers 10 adjustable crossover frequency points for high/low pass filters, a 100W passive subwoofer output with independent volume control, and multiple EQ presets with bass/treble customization. Supporting USB-C, HDMI eARC, optical, and AUX inputs, it ensures versatile connectivity for modern audio setups. Included remote control and a 12-month warranty make it a reliable choice for audiophiles seeking flexible, powerful sound enhancement.

## Description

SMSL A50

Review: Ciekawy wzmacniacz z kilkoma wadami - Kupiłem ten wzmacniacz ponieważ ma opcję podłączenia pasywnego subwoofera. Niestety okazało się, że 100 watów mocy jaką się chwali SMSL A50 Pro być może jest dostępna, ale przy oporności 2 Ohm, więc podłączając 4 lub 8 Ohm subwoofer nie uzyskacie z niego prawie nic. Mój sub przy maksymalnej głośności wzmacniacza wydaje zaledwie cichy pomruk. Ze względu na to będę chyba zwracał ten wzmacniacz. Kolejny minus to regulacja bass treble. Nie działa ona tak jak niezależna korekcja niskich i wysokich tonów, a raczej jako "wilk eq", a więc kiedy dodajemy treble - znika bas, kiedy dodajemy basu - znika góra. Najlepiej zostawić te ustawienia na zero. Pomijając wady sprzęt brzmi całkiem dobrze i nie brakuje mu mocy we współpracy z głośnikami stereo. Plusem jest wejście HDMI eArc do podłączenia TV. U mnie to działa. Gdyby nie niska moc wyjścia na subwoofer byłby to bardzo dobry wzmacniacz w swojej klasie cenowej.
Review: A rare quality 2.1 amp with a passive sub output - I needed this. - Very well constructed for the price and compact as well, I was using a digital amp with analogue controls, this amp is digital all the way with the very intuitive single rotary encoder knob and the three digit display. Once you get to know the different display menu modes, tweaking with just the front knob is a breeze. The various eq modes, bass, treble, tone presents, high and low pass filters and subwoofer volume are quite subtle to my recollection but it's well worth spending a bit of time tweaking them to your tastes as the amp has virtually no problems filling my listening room with a very balanced 3d stereo image soundstage whether using the excellent bluetooth receiver or the optical in. I have very little use for the usb dac in, 3.5mm jack in and the HDMI ARC, I have a 200 cd changer, media streamer and a linear tracking turntable connected to an Arylic BP50 preamp feeding the S.M.S.L. via an optical cable . Then out of the stereo L & R and subwoofer outputs to a pair of Wharfedale Modus Cubes and a matching pair of Mission 73ps passive subwoofers. The remote control is a nice addition and it seems to work well but my room is so small I can just reach over to the amp and use the rotary controller. I bought this amp because it had a passive sub output and an optical in - these and everything else works flawlessly - a great little modern amp for a bargain price.

## 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 | #59,162 in Electronics ( See Top 100 in Electronics ) #149 in Home Audio Amplifiers |
| Brand Name | S.M.S.L |
| Customer Reviews | 4.2 4.2 out of 5 stars (276) |
| Global Trade Identification Number | 06976935810226 |
| Included Components | Remote Control |
| Manufacturer | S.M.S.L |
| Maximum Output Power | 100 watts |
| Model | A50 PRO |
| Mounting Type | Freestanding |
| Number of Channels | 2 |
| Output Power | 100 Watts |
| Package Type Name | box |
| Part Number | A50 |
| Specification Met | CE, FCC, RoHS |
| Unit Count | 1 Count |
| Voltage | 24 Volts |

## Product Details

- **Brand:** S.M.S.L
- **Manufacturer:** S.M.S.L
- **Mounting type:** Freestanding
- **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)

## Customer Reviews

### ⭐⭐⭐⭐ Ciekawy wzmacniacz z kilkoma wadami
*by K***D on 17 February 2025*

Kupiłem ten wzmacniacz ponieważ ma opcję podłączenia pasywnego subwoofera. Niestety okazało się, że 100 watów mocy jaką się chwali SMSL A50 Pro być może jest dostępna, ale przy oporności 2 Ohm, więc podłączając 4 lub 8 Ohm subwoofer nie uzyskacie z niego prawie nic. Mój sub przy maksymalnej głośności wzmacniacza wydaje zaledwie cichy pomruk. Ze względu na to będę chyba zwracał ten wzmacniacz. Kolejny minus to regulacja bass treble. Nie działa ona tak jak niezależna korekcja niskich i wysokich tonów, a raczej jako "wilk eq", a więc kiedy dodajemy treble - znika bas, kiedy dodajemy basu - znika góra. Najlepiej zostawić te ustawienia na zero. Pomijając wady sprzęt brzmi całkiem dobrze i nie brakuje mu mocy we współpracy z głośnikami stereo. Plusem jest wejście HDMI eArc do podłączenia TV. U mnie to działa. Gdyby nie niska moc wyjścia na subwoofer byłby to bardzo dobry wzmacniacz w swojej klasie cenowej.

### ⭐⭐⭐⭐⭐ A rare quality 2.1 amp with a passive sub output - I needed this.
*by K***J on 3 December 2025*

Very well constructed for the price and compact as well, I was using a digital amp with analogue controls, this amp is digital all the way with the very intuitive single rotary encoder knob and the three digit display. Once you get to know the different display menu modes, tweaking with just the front knob is a breeze. The various eq modes, bass, treble, tone presents, high and low pass filters and subwoofer volume are quite subtle to my recollection but it's well worth spending a bit of time tweaking them to your tastes as the amp has virtually no problems filling my listening room with a very balanced 3d stereo image soundstage whether using the excellent bluetooth receiver or the optical in. I have very little use for the usb dac in, 3.5mm jack in and the HDMI ARC, I have a 200 cd changer, media streamer and a linear tracking turntable connected to an Arylic BP50 preamp feeding the S.M.S.L. via an optical cable . Then out of the stereo L & R and subwoofer outputs to a pair of Wharfedale Modus Cubes and a matching pair of Mission 73ps passive subwoofers. The remote control is a nice addition and it seems to work well but my room is so small I can just reach over to the amp and use the rotary controller. I bought this amp because it had a passive sub output and an optical in - these and everything else works flawlessly - a great little modern amp for a bargain price.

### ⭐⭐⭐⭐⭐ Prima kwaliteit
*by K***L on 5 January 2026*

Werkt perfect. Wordt dagelijks in combinatie met een TV.

## 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 United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-31*