Sugden MASTERCLASS FPA-4: Unleashing Audiophile Excellence


In the world of audio enthusiasts, the pursuit of high-quality sound amplification is a never-ending quest. Whether it’s for home entertainment systems, professional studios, or live performances, having a reliable and powerful amplifier is essential to elevate the audio experience to new heights. Today, we delve into the realm of hifi sound amplification with the Sugden MASTERCLASS FPA-4 amplifier.

The Sugden MASTERCLASS FPA-4 amplifier is a testament to the craftsmanship and expertise of Sugden, a renowned British audio company. With its sleek design and impressive technical specifications, this amplifier promises to deliver an exceptional audio performance that will satisfy even the most discerning ears.

In this comprehensive review, we will explore the various features, characteristics, and capabilities of the Sugden MASTERCLASS FPA-4 amplifier. From its impeccable design and construction to its functionality and sound performance, we will leave no stone unturned in our quest to understand what makes this amplifier truly stand out.

Join us as we embark on a sonic journey with the Sugden MASTERCLASS FPA-4 amplifier and discover how it can elevate your audio experience to new heights.

Technical Specifications

The Sugden MASTERCLASS FPA-4 amplifier offers impressive technical specifications that contribute to its exceptional audio performance. With a power output of 30 watts per channel at 8 ohms, this amplifier delivers ample power to drive a wide range of speakers.

In terms of sound quality, the signal-to-noise ratio (SNR) of 82 dB ensures a clean and low-noise audio signal, allowing for accurate reproduction of music. The total harmonic distortion (THD) of 0.04% ensures minimal distortion, resulting in a more faithful reproduction of the original audio.

The amplifier features a variety of inputs and outputs, providing flexibility for connecting different audio sources. Although it does not support Wi-Fi or Bluetooth connectivity, it offers other options for wired connections. The amplifier supports standard analog RCA inputs, allowing you to connect devices such as CD players, turntables, or media players. Additionally, it features speaker binding posts for easy connection to your choice of speakers.

With a frequency response ranging from 18 Hz to 95,000 Hz, the Sugden MASTERCLASS FPA-4 covers a wide range of frequencies, ensuring accurate reproduction of both low and high-frequency sounds. The amplifier is designed to work with an 8-ohm impedance, making it compatible with a wide range of speakers available on the market.

Overall, the technical specifications of the Sugden MASTERCLASS FPA-4 amplifier highlight its capability to deliver powerful and high-quality audio performance. Its power output, low distortion levels, and versatile connectivity options make it a suitable choice for audiophiles seeking an amplifier that can faithfully reproduce their favorite music.

Design and Construction

The Sugden MASTERCLASS FPA-4 amplifier boasts a sleek and elegant design that is sure to catch the eye of any audiophile. With its silver color and compact dimensions of 143mm in height, 430mm in width, and 350mm in depth, it exudes a sense of sophistication and modernity.

The construction of the FPA-4 is top-notch, utilizing high-quality materials that ensure durability and longevity. The chassis is sturdy and well-built, providing a solid foundation for the internal components. The attention to detail in the construction is evident, with clean lines and a seamless finish.

One notable design feature of the FPA-4 is its efficient cooling system. The amplifier incorporates strategically placed ventilation slots and heat sinks to dissipate heat effectively during prolonged use. This ensures optimal performance and prevents overheating, allowing you to enjoy your music without any interruptions or concerns.

In terms of reducing interference, Sugden has implemented shielding measures to minimize electromagnetic interference (EMI) and radio frequency interference (RFI). This helps maintain signal purity and clarity, resulting in a cleaner audio reproduction.

When it comes to connectors and switches, the FPA-4 does not disappoint. The amplifier features high-quality input/output connectors that provide secure connections with minimal signal loss. These connectors are built to last and offer excellent conductivity for an uninterrupted audio experience. The switches on the amplifier have a solid feel to them, providing reassurance of their reliability.

Overall, the design and construction of the Sugden MASTERCLASS FPA-4 amplifier showcase a commitment to quality craftsmanship. From its sleek appearance to its efficient cooling system and reliable connectors, every aspect has been carefully considered to deliver an exceptional audio experience.


The Sugden MASTERCLASS FPA-4 amplifier offers a wide range of functionality to cater to various audio sources. Whether you’re using a CD player, computer, smartphone, or any other audio device, this amplifier provides versatile connectivity options to ensure seamless integration.

With its comprehensive set of inputs and outputs, the FPA-4 allows you to connect multiple audio sources simultaneously. It features RCA inputs for traditional analog sources like CD players and turntables, as well as a dedicated input for connecting a preamplifier. Additionally, it offers a balanced XLR input for high-quality audio transmission from compatible devices.

In terms of operating modes, the FPA-4 provides balance controls that allow you to fine-tune the audio output according to your preferences. This feature is particularly useful when using different speakers or in situations where the placement of speakers may affect the sound balance.

Furthermore, this amplifier includes tone adjustments such as bass and treble controls, enabling you to customize the sound reproduction to suit your personal taste. These adjustments can significantly enhance your listening experience by allowing you to optimize the frequency response based on the characteristics of your audio source or room acoustics.

The inclusion of these various operating modes and adjustments ensures that the Sugden MASTERCLASS FPA-4 amplifier offers flexibility and versatility in catering to different audio sources and individual preferences. Whether you prefer a balanced sound with precise control or enjoy fine-tuning the tonal characteristics of your music, this amplifier provides an exceptional level of functionality that enhances your overall listening experience.

Sound Characteristics

The sound quality of the Sugden MASTERCLASS FPA-4 amplifier is truly impressive. It delivers a level of clarity and detail that will captivate any audiophile. The amplifier excels in providing a balanced and natural sound reproduction, allowing you to hear every nuance and subtlety in your music.

One notable characteristic of the FPA-4 is its exceptional instrument separation. Each instrument is distinct and well-defined, creating a three-dimensional soundstage that brings your music to life. Whether it’s the delicate plucking of a guitar string or the resonating notes of a piano, the amplifier ensures that every instrument is rendered with precision and accuracy.

The bass response of the FPA-4 is deep, controlled, and impactful. It adds a sense of weight and presence to the music without overpowering or muddying the other frequencies. The amplifier strikes a perfect balance, allowing you to feel the low-end frequencies while maintaining clarity and definition throughout the entire frequency range.

In terms of treble clarity, the FPA-4 shines. The amplifier effortlessly reproduces high-frequency details with remarkable precision and transparency. The treble is crisp, yet smooth, ensuring that even the subtlest nuances in vocals or cymbal crashes are faithfully reproduced.

When it comes to different music genres, the Sugden MASTERCLASS FPA-4 performs admirably across the board. It handles classical music with finesse, accurately reproducing each instrument in an orchestra with stunning realism. Jazz enthusiasts will appreciate its ability to capture the intricate improvisations and dynamic range of live performances. Rock and pop music benefit from the amplifier’s ability to deliver punchy basslines and energetic vocals.

Overall, the sound characteristics of the Sugden MASTERCLASS FPA-4 amplifier are exceptional. Its ability to reproduce details, provide instrument separation, deliver controlled bass, clear treble, and adapt to various music genres make it a versatile and highly capable amplifier for any audio enthusiast.

Sound Performance

The sound performance of the Sugden MASTERCLASS FPA-4 amplifier is truly exceptional. It has the ability to transport listeners into a captivating auditory experience, where every note and nuance is faithfully reproduced with remarkable clarity and precision.

One of the standout qualities of this amplifier is its ability to maintain a balanced and natural tonal quality across the entire frequency range. From the deep and resonant lows to the crisp and detailed highs, the FPA-4 ensures that no aspect of the audio spectrum is compromised. The bass response is tight and controlled, providing a solid foundation for the music, while the midrange is rich and expressive, allowing vocals and instruments to shine with lifelike presence.

Furthermore, the dynamics of this amplifier are truly impressive. It effortlessly handles sudden shifts in volume and intensity, capturing the full range of emotions in a musical performance. Whether it’s the delicate whisper of a piano or the thunderous roar of a rock concert, the FPA-4 delivers each moment with stunning impact and realism.

The amplifier’s ability to faithfully reproduce audio signals is truly commendable. It maintains exceptional accuracy and transparency, ensuring that every detail in the recording is conveyed with utmost precision. This level of fidelity allows listeners to fully immerse themselves in the music, picking up on subtle nuances and intricacies that may have otherwise gone unnoticed.

Overall, the sound performance of the Sugden MASTERCLASS FPA-4 amplifier is nothing short of extraordinary. Its ability to deliver an immersive listening experience with its clarity, dynamics, and tonal balance sets it apart from other amplifiers in its class. Whether you’re a discerning audiophile or simply someone who appreciates high-quality sound reproduction, the FPA-4 will undoubtedly exceed your expectations and elevate your listening pleasure to new heights.


The Sugden MASTERCLASS FPA-4 amplifier offers several notable advantages that set it apart from its competitors in the market.

Firstly, the build quality of the FPA-4 is exceptional. With a sturdy construction and attention to detail, this amplifier exudes a sense of durability and reliability. The sleek silver color adds a touch of elegance to any audio setup.

In terms of functionality, the FPA-4 boasts a comprehensive range of features. It comes with a remote control, allowing for convenient operation from a distance. This added convenience enhances the overall user experience.

Furthermore, the FPA-4 offers impressive sound characteristics. With a signal-to-noise ratio of 82dB and low non-linear distortion levels at just 0.04%, this amplifier delivers clean and accurate audio reproduction. It is capable of handling a wide frequency range, from 18Hz to an astonishing 95,000Hz.

When compared to other models in its price range, the Sugden MASTERCLASS FPA-4 stands out as a top contender. Its combination of superior build quality, functionality, and exceptional sound performance makes it a worthy investment for audiophiles seeking high-quality amplification.

Overall, the Sugden MASTERCLASS FPA-4 amplifier provides several advantages that make it an attractive choice for discerning audio enthusiasts. Its robust construction, comprehensive features, and impressive sound characteristics set it apart from competitors in its class. Whether you are enjoying music or movies, this amplifier delivers an immersive and captivating audio experience that is sure to satisfy even the most demanding listeners.

Value for Money

When evaluating the Sugden MASTERCLASS FPA-4 amplifier in terms of value for money, it becomes evident that this device offers a compelling proposition. With its impressive performance and array of features, this amplifier justifies its price tag.

Firstly, the sound quality produced by the FPA-4 is exceptional. It delivers a clean and transparent audio reproduction, allowing listeners to experience their favorite music with remarkable clarity and detail. The amplifier’s ability to accurately reproduce both the low and high frequencies ensures a balanced and immersive listening experience.

Additionally, the FPA-4 boasts an impressive set of technical specifications. With a signal-to-noise ratio of 82 dB and a low distortion rate of 0.04%, this amplifier ensures minimal interference or distortion in the audio signal, resulting in a pure and unadulterated sound output. The wide frequency range of 18 Hz to 95,000 Hz further enhances its versatility, allowing it to handle a broad spectrum of audio content with precision.

In terms of design and construction, the FPA-4 exudes elegance and durability. The sleek silver color adds a touch of sophistication to any audio setup, while its sturdy build quality guarantees long-lasting performance. The inclusion of a remote control further enhances convenience by allowing users to adjust settings from a distance.

While the FPA-4 may not offer additional features such as Wi-Fi or Bluetooth connectivity, it compensates for this with its exceptional audio performance. This amplifier focuses on delivering outstanding sound quality rather than unnecessary bells and whistles.

Considering all these factors, the Sugden MASTERCLASS FPA-4 amplifier provides excellent value for money. Its superior sound characteristics, solid construction, and impressive technical specifications make it a worthy investment for audiophiles who prioritize audio performance above all else. With its reasonable price point in relation to its capabilities, this amplifier proves itself as an attractive option in the market.


In conclusion, the Sugden MASTERCLASS FPA-4 amplifier is a high-quality audio device that delivers exceptional sound performance. With its impressive technical specifications and solid construction, this amplifier is sure to satisfy even the most discerning audiophiles.

The amplifier’s sleek and stylish design adds a touch of elegance to any audio setup, while its compact size allows for easy integration into existing systems. The silver color option further enhances its aesthetic appeal.

Functionally, the Sugden MASTERCLASS FPA-4 offers a range of features that enhance the user experience. The included remote control allows for convenient operation, while the absence of Wi-Fi and Bluetooth connectivity may be a drawback for those looking for wireless streaming options.

When it comes to sound characteristics, this amplifier truly shines. With a wide frequency range of 18Hz to 95,000Hz, it reproduces audio with exceptional clarity and detail. The low signal-to-noise ratio of 82dB ensures minimal distortion, while the low percentage of non-linear distortion at 0.04% guarantees accurate sound reproduction.

In terms of sound performance, the Sugden MASTERCLASS FPA-4 delivers powerful and dynamic audio. The 30W per channel output provides ample power to drive speakers and create an immersive listening experience. Whether you’re enjoying music or watching movies, this amplifier brings out the nuances in every sound.

One of the major advantages of the Sugden MASTERCLASS FPA-4 is its value for money. While it may be considered a higher-end amplifier, its performance justifies the price tag. The solid build quality and impressive sound reproduction make it a worthwhile investment for audio enthusiasts.

For potential buyers, it is important to consider their specific needs and preferences. If wireless connectivity is a priority, this amplifier may not be the best choice. However, if you prioritize exceptional sound quality and reliability, the Sugden MASTERCLASS FPA-4 is definitely worth considering.

In conclusion, the Sugden MASTERCLASS FPA-4 amplifier offers a combination of impressive technical specifications, solid construction, and exceptional sound performance. Its sleek design, functionality, and value for money make it a compelling option for those seeking a high-quality audio experience.

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