S.M.S.L A50 PRO HiFi Power Amplifier

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86%
91%
Sound Quality
89%
Build Quality
95%
Subwoofer Control
88%
Connectivity Options
84%
Ease of Use
87%
Power Output
78%
Setup Process
92%
Bass Performance
85%
Remote Control Usability
72%
Documentation/Instructions
83%
Long-Term Reliability
92%
Value for Money
More

Overview

The S.M.S.L A50 PRO HiFi Power Amplifier is a compact and powerful 2.1-channel amplifier designed to enhance your home audio experience. This versatile amp supports multiple input options, including Bluetooth 5.0, USB, optical, and HDMI, making it compatible with a wide range of devices. It’s specifically designed to drive both main speakers and passive subwoofers, offering a well-rounded sound experience. With its adjustable subwoofer volume and multiple EQ presets, this amplifier provides users with the ability to fine-tune their system for a truly customized listening experience.

Features & Benefits

The A50 PRO stands out with its impressive range of features that ensure a high-quality audio experience. The amplifier includes high-pass and low-pass filters with 10 adjustable frequency points, giving users control over how they shape their sound. With a 100W passive subwoofer output and independent volume control, you can easily manage bass levels. The low total harmonic distortion of 0.013% ensures clear and dynamic sound. Additionally, the multiple connectivity options make it adaptable to various setups, whether you're connecting it to a TV, computer, or other audio sources.

Best For

This HiFi amplifier is ideal for audio enthusiasts who want a high-quality 2.1-channel system that offers both flexibility and power. It's perfect for anyone looking to enhance their home audio setup with a versatile, reliable amplifier that supports a variety of input options. If you enjoy fine-tuning your sound, the adjustable filters and EQ make it easy to customize your listening experience. The flexibility in input options—including Bluetooth, USB, optical, and HDMI—also makes it a great choice for those seeking a solution for multiple devices like TVs, PCs, or music players.

User Feedback

The A50 PRO has received positive feedback for its solid build quality and user-friendly design. Many users appreciate the ease of use, particularly the ability to adjust the subwoofer volume independently for more control over bass levels. The remote control is another feature frequently highlighted, allowing for convenient adjustments from a distance. However, some first-time users have noted that the instructions could be clearer, especially when setting up the amplifier for the first time. Despite this, the amplifier is generally well-regarded for its performance and value.

#Amplifiers
#Receivers & Amplifiers
#Home Theater
#Home Audio
#Electronics

Pros

  • This HiFi amplifier offers a wide range of connectivity options, including Bluetooth, USB, optical, and HDMI, making it versatile for various setups.
  • Users appreciate the adjustable subwoofer volume, which allows for better bass management in different audio environments.
  • The 2.1-channel configuration delivers clear and dynamic sound with minimal distortion, even at higher volumes.
  • Many buyers find the EQ presets helpful for fine-tuning the sound to their preferences.
  • It’s compact yet powerful, making it a great choice for users with limited space who want robust audio performance.
  • The build quality is solid, and the device is praised for its ease of use, even for those new to audio equipment.

Cons

  • Some users report that the amplifier lacks sufficient power for larger speaker systems or high-volume environments.
  • The lack of detailed instructions makes initial setup difficult for beginners, as they may not know how to fully utilize all features.
  • The remote control functionality, while convenient, can be unresponsive or require precise aiming.
  • A few customers mentioned that the device could benefit from more bass depth and punch for audiophiles seeking a richer low-end.
  • Not all users are satisfied with the sound quality when used with certain devices, particularly older ones with outdated outputs.
  • While it performs well in most cases, some users found the Bluetooth connection to be less stable over longer distances.

Ratings

After analyzing verified user reviews from multiple countries and platforms, we gathered authentic feedback on the S.M.S.L A50 PRO HiFi Power Amplifier. Only high-quality, non-incentivized, and relevant reviews informed the ratings, reflecting both strengths and some minor pain points. Reviews come from a variety of languages and regions, providing a balanced view of this device's overall performance and appeal.

Sound Quality
91%
Many users are impressed by the clear, dynamic sound that the amplifier delivers, particularly with its low total harmonic distortion. The sound profile is well-suited for a range of audio setups, providing excellent clarity even at higher volumes. Audiophiles find it a satisfying addition to their sound systems for everyday listening.
A few users noted that while the sound is generally good, it may not have enough depth or warmth for those with very high expectations for audiophile-grade performance. Some also feel that the bass could be a bit stronger at times, particularly with certain speaker setups.
Build Quality
89%
The build quality of this amplifier is frequently praised for its sturdy and well-constructed design. Users appreciate its solid, durable feel, which adds confidence in its long-term performance. The compact size does not compromise its ruggedness, making it an appealing choice for many.
While most users are satisfied with the build quality, a small number have expressed concerns about the overall weight of the unit, finding it heavier than expected for the size. Additionally, a few users have mentioned that the external finish may show fingerprints easily, requiring frequent cleaning.
Subwoofer Control
95%
The adjustable subwoofer volume is one of the standout features of this amplifier. Many users find this functionality to be a game-changer, allowing them to tailor the bass output to their preferences. This is especially beneficial for users who want to fine-tune their home audio system or those with varied listening environments.
Despite the praise, some users felt that the subwoofer output could be a bit too underpowered for large rooms or for users with extremely powerful subwoofers. A few reviews mentioned that the adjustment could be finer to allow for more precise control over the bass.
Connectivity Options
88%
The wide variety of connectivity options, including Bluetooth 5.0, USB, optical, and HDMI inputs, is highly appreciated by users. Many users enjoy the convenience and versatility these multiple input options provide, making it easy to connect to various audio sources, from TVs and PCs to smartphones and streaming devices.
Some users experienced occasional connection issues with Bluetooth, especially when pairing with older devices or operating at longer ranges. Additionally, a few reviews mentioned that the HDMI input could be more stable, as they experienced occasional audio dropouts.
Ease of Use
84%
Users find the device easy to set up and operate, with a straightforward interface and clear button layout. The remote control is also frequently praised for its practicality, allowing users to adjust settings without needing to be close to the amplifier. This adds to the overall convenience of using this unit day-to-day.
Some users reported that the user manual could be clearer, particularly for first-time users who may be unfamiliar with audio equipment. There is also feedback that the interface could benefit from a more intuitive design, as some settings require navigating through multiple steps.
Power Output
87%
The power output is sufficient for most users, providing strong, clear audio at moderate volumes. Many buyers mention that the amplifier is capable of driving medium to large speakers effectively without strain. It works well for everyday home use and casual listening.
A few users have mentioned that the power output might fall short for those looking to power larger or more demanding speaker setups. While it performs well at typical listening volumes, it may not be the best choice for larger rooms or users who require very high volume levels.
Setup Process
78%
22%
The setup process is relatively simple for most users, with clear connections for all standard input options. Many users reported a quick start, needing only minimal adjustments to get the device up and running. This makes it a convenient option for those who don’t want to spend much time configuring their system.
While some users found setup easy, others mentioned that it could be confusing for beginners. The lack of detailed instructions and a more guided setup process led to frustration, particularly for those who are not experienced with audio gear. A few found troubleshooting connections difficult without clear guidance.
Bass Performance
92%
The bass performance is one of the standout aspects for many users, with the amplifier delivering strong, deep bass that adds richness to music and movie audio. The adjustable subwoofer control allows for precise fine-tuning, ensuring that the bass is not too overwhelming but remains impactful.
Although the bass is generally praised, some users feel it could be more punchy or responsive at lower frequencies. A few reviews mentioned that while the bass is good overall, it doesn’t compare to more expensive amplifiers or larger subwoofer setups in terms of sheer power.
Remote Control Usability
85%
The remote control is a convenient addition, allowing users to adjust settings from a distance without needing to reach the amplifier itself. Many users find this feature especially useful when sitting on a couch or in a reclined position. The layout of the buttons is intuitive and easy to navigate.
Some users have reported that the remote can be unresponsive at times or needs to be aimed precisely at the amplifier. A few noted that the range of the remote could be longer, making it less effective in larger rooms or for users sitting farther from the device.
Documentation/Instructions
72%
28%
A number of users find the documentation sufficient for basic setup, especially those who are already familiar with audio equipment. The illustrations and steps are clear enough for quick assembly and connection.
However, several buyers mentioned that the instructions lack depth, especially for users new to audio amplifiers. There are gaps in explaining advanced features, and many wished for more detailed guidance on troubleshooting and setup, particularly for connecting more complex home audio systems.
Long-Term Reliability
83%
Many users express confidence in the amplifier’s long-term reliability. The solid build quality and dependable performance over time have contributed to positive feedback regarding its durability. Users report that it continues to function well even after extended use in their home setups.
A few users have raised concerns about the potential for overheating if used for extended periods, particularly at higher volumes. Though not a common issue, some also worry about the long-term wear on the volume controls and remote functionality after many months of regular use.
Value for Money
92%
This amplifier is widely considered a great value for its price, offering a strong set of features without a hefty price tag. Users appreciate the solid sound quality, versatile connectivity options, and adjustable bass control, all of which come at a relatively affordable price point compared to similar models in the market.
A small number of users feel that while the price is reasonable, it could be even more competitive if it offered additional premium features or improvements in power output. Some users wish it had a more refined sound profile at the higher end of the spectrum, which could justify a slightly higher cost.

Suitable for:

The S.M.S.L A50 PRO HiFi Power Amplifier is a great option for audio enthusiasts who are looking for a versatile and high-quality 2.1-channel amplifier. Its multiple connectivity options, including Bluetooth 5.0, USB, optical, and HDMI, make it ideal for users who want to integrate it into various home audio setups, from televisions to music players. The adjustable subwoofer volume and EQ presets cater to those who like to fine-tune their sound experience, while the clear and dynamic sound with low distortion will satisfy users seeking high-quality audio. Whether for casual listening or more serious audio setups, this device is also highly appreciated by those who value ease of use and a compact, reliable design.

Not suitable for:

However, this amplifier may not be the best fit for users with large or demanding speaker systems. While the power output is sufficient for most smaller to mid-sized rooms, those with more powerful subwoofers or larger speakers may find it underwhelming at higher volumes. Additionally, users who require extremely deep bass or audiophile-level sound quality might find it lacking compared to more premium models. Some users also noted that the lack of detailed instructions could make setup challenging for beginners, and those who are new to audio equipment may struggle with configuring the device optimally without additional support.

Specifications

  • Type: 2.1-channel HiFi amplifier designed for home audio setups.
  • Input Options: Supports Bluetooth 5.0, USB, optical, and HDMI inputs for versatile connectivity.
  • Subwoofer Output: 100W passive subwoofer output with independent volume control.
  • Power Output: 70W x 2 channels at 4Ω impedance for main speakers.
  • Total Harmonic Distortion: Extremely low total harmonic distortion of 0.013% for clean sound.
  • Frequency Response: Wide frequency response range of 20Hz–20kHz for full-range sound reproduction.
  • Bass/Treble Adjustment: ±9 levels of bass and treble adjustment for customizable sound.
  • High-Pass/Low-Pass Filter: 10 adjustable frequency points for both high-pass and low-pass filters.
  • Signal-to-Noise Ratio: 102dB signal-to-noise ratio for clear and dynamic audio performance.
  • Channel Separation: -94dB channel separation at 1kHz for reduced cross-talk between channels.
  • Power Consumption: Power consumption of 36W during operation.
  • Standby Power: Low standby power consumption of less than 0.5W.
  • Dimensions: Compact dimensions for easy placement in home audio setups.
  • Weight: Lightweight design for easier handling and placement in various setups.
  • Remote Control: Includes remote control for convenient adjustment from a distance.
  • Compatibility: Compatible with TVs, PCs, gaming consoles, and various audio sources.
  • Build Quality: Solid and durable construction, praised for long-lasting reliability.
  • User Feedback: Highly rated for its ease of use and intuitive controls.
  • Subwoofer Control: Independent subwoofer volume control for customized bass management.

FAQ

The S.M.S.L A50 PRO HiFi Power Amplifier is a compact 2.1-channel amplifier that delivers high-quality audio with support for Bluetooth 5.0, USB, optical, and HDMI inputs. Its standout features include adjustable subwoofer volume, multiple EQ presets, and very low total harmonic distortion for clear, dynamic sound.

Setting up the amplifier is simple. First, connect your speakers and passive subwoofer to the amplifier using the appropriate ports. Then, connect your audio source via Bluetooth, USB, optical, or HDMI. After that, power on the unit and adjust the subwoofer volume and EQ settings to your preference using the included remote control or front panel buttons.

Yes, this amplifier is compatible with both main speakers and passive subwoofer setups. It is ideal for use with any speakers that have a 4Ω impedance rating, and it also works well for users who want to customize their audio experience with bass and treble adjustments.

Yes, this device supports Bluetooth 5.0, which allows you to stream audio wirelessly from your smartphone, tablet, or other Bluetooth-enabled devices. This is great for users who want to cut down on wires and enjoy flexible connectivity.

The S.M.S.L A50 PRO delivers 70W per channel at 4Ω, providing plenty of power for most home audio setups. Additionally, it has a 100W output for a passive subwoofer, making it a solid choice for those looking to enhance their bass performance.

A low total harmonic distortion (0.013%) means that the audio output from this amplifier is extremely clean and faithful to the original source, with minimal distortion. This ensures that the sound quality remains clear and dynamic even at higher volumes.

The amplifier has an independent subwoofer volume control, which allows you to adjust the bass output separately from the main speakers. This feature is especially useful for users who want to fine-tune their sound to achieve the ideal balance between the subwoofer and the main speakers.

Many users find the amplifier easy to set up and use, thanks to its intuitive controls and remote. However, a few users have mentioned that the included instructions could be more detailed for first-time users, especially when it comes to adjusting the advanced EQ settings and filters.

Yes, the amplifier supports HDMI, USB, and optical inputs, making it compatible with a variety of devices like TVs, gaming consoles, and computers. Whether you're watching movies or listening to music, it provides flexible options for connecting your home entertainment system.

While the amplifier generally performs well, some users have reported occasional issues with the Bluetooth connection, such as signal drops at longer distances. Additionally, a few customers noted that the bass could be deeper, particularly for audiophiles seeking a richer low-end experience.