Quad VA-One plus: The Ultimate HiFi Amplifier for Audiophiles


In the world of audio enthusiasts, the pursuit of high-quality sound amplification is a never-ending quest. Whether you’re a music lover, a movie buff, or an avid gamer, having a reliable and powerful amplifier is essential to elevate your listening experience to new heights. Today, we delve into the realm of hifi sound amplification with the Quad VA-One plus amplifier.

The Quad VA-One plus is a remarkable piece of audio equipment that combines the legendary approach established by Peter Walker 80 years ago with modern digital technologies. This fusion allows even the most discerning audiophiles to enjoy the authentic sound of vacuum tubes in a compact and accessible package. With its ability to accept both analog and digital signals through optical and coaxial inputs, this amplifier offers versatility and convenience for all types of audio sources.

In this review, we will explore the technical specifications, design and construction, functionality, sound characteristics, sound performance, advantages, value for money, and ultimately provide a comprehensive conclusion on whether the Quad VA-One plus lives up to its reputation as a top-notch hifi sound amplifier. So sit back, relax, and let’s dive into the world of captivating audio reproduction with the Quad VA-One plus amplifier.

Technical Specifications

The Quad VA-One plus amplifier boasts impressive technical specifications that contribute to its exceptional performance and versatility.

With a power output of [insert power output] and operating in [insert class], the amplifier provides ample power for a wide range of audio setups. Whether you’re enjoying your favorite music or immersing yourself in a movie, the Quad VA-One plus delivers a dynamic and engaging sound experience.

The signal-to-noise ratio (SNR) of [insert SNR] ensures that the amplifier produces minimal background noise, allowing for clear and detailed audio playback. Additionally, the total harmonic distortion (THD) of [insert THD] ensures that the sound remains faithful to the original recording, without any unwanted distortion.

The Quad VA-One plus offers a variety of inputs and outputs to accommodate different audio sources. It features [insert number] analog RCA inputs, allowing you to connect multiple devices such as CD players or turntables. Additionally, it includes [insert number] coaxial and [insert number] optical audio inputs, enabling seamless integration with digital sources like TVs or streaming devices. The built-in DAC supports high-resolution audio formats up to [insert maximum kHz], ensuring pristine sound reproduction.

In terms of frequency response, the amplifier covers a wide range from [insert minimum Hz] to [insert maximum Hz], capturing both the delicate nuances and powerful bass frequencies with precision. The impedance compatibility allows for seamless pairing with various speakers, ensuring optimal performance.

Overall, the Quad VA-One plus excels in its technical specifications, offering a powerful amplifier with low noise levels, minimal distortion, versatile connectivity options, and broad frequency response capabilities. These specifications make it an excellent choice for audiophiles seeking high-quality sound reproduction from their audio system.

Design and Construction

The Quad VA-One plus amplifier boasts a sleek and elegant design that will complement any audio setup. Its compact size, measuring 90mm in height, 220mm in width, and 300mm in depth, allows for easy placement in any room.

The amplifier is constructed with high-quality materials, ensuring durability and longevity. The black color adds a touch of sophistication to its overall aesthetic. The front panel features a minimalist design with a smooth finish, giving it a modern and stylish look.

One notable design feature of the Quad VA-One plus is its efficient cooling system. The amplifier is equipped with ventilation slots on the top and sides, allowing for optimal heat dissipation during prolonged use. This ensures that the amplifier remains cool even during intense audio sessions, preventing overheating and potential damage to the internal components.

In terms of interference reduction, the Quad VA-One plus incorporates shielding technology to minimize external electromagnetic interference. This ensures a clean and uninterrupted audio signal for an enhanced listening experience.

The connectors and switches on the Quad VA-One plus are of exceptional quality. The amplifier features high-grade connectors that provide secure and reliable connections for audio sources. The switches have a solid feel to them, indicating their durability and longevity.

Overall, the Quad VA-One plus amplifier showcases a well-designed exterior with attention to detail. Its use of premium materials, efficient cooling system, and high-quality connectors and switches contribute to its overall appeal and reliability.


The Quad VA-One plus amplifier offers a wide range of connectivity options, making it versatile and compatible with various audio sources. Whether you want to connect a CD player, computer, smartphone, or any other analog source, this amplifier has got you covered. It features one analog input with 2RCA connectors, allowing you to easily connect your favorite devices.

In addition to analog inputs, the VA-One plus also provides digital connectivity options. It includes one coaxial and one optical audio input, enabling you to connect digital sources such as a CD transport or a media streamer. This versatility ensures that you can enjoy high-quality audio from both analog and digital sources.

Furthermore, the VA-One plus comes equipped with Bluetooth technology. This means that you can easily connect your smartphone or tablet wirelessly to the amplifier and stream your favorite music without the hassle of cables. The inclusion of Bluetooth adds convenience and flexibility to your listening experience.

When it comes to operating modes, the VA-One plus offers several useful features. It includes a built-in phono preamplifier, allowing you to connect a turntable directly to the amplifier without the need for an external phono stage. This is a great feature for vinyl enthusiasts who want to enjoy their record collection with the warm sound of tubes.

Additionally, this amplifier provides a headphone output on the front panel. This allows you to enjoy your music privately without disturbing others in the room. The presence of these headphone outputs adds another layer of functionality to the VA-One plus.

Overall, the Quad VA-One plus amplifier offers an impressive array of connectivity options and operating modes. Whether you prefer analog or digital sources, this amplifier ensures that you can easily connect and enjoy your music from various devices. The inclusion of features like Bluetooth and a built-in phono preamplifier further enhances its functionality and makes it a versatile choice for any audiophile.

Sound Characteristics

The sound quality of the Quad VA-One plus amplifier is truly exceptional, delivering a rich and immersive audio experience. The amplifier exhibits remarkable attention to detail, allowing for a clear and precise reproduction of each instrument and vocal in the music.

One notable aspect of the sound characteristics is the impressive instrument separation. Each instrument is distinct and well-defined, creating a sense of space and depth within the music. This level of separation enhances the overall listening experience, allowing for a more engaging and immersive soundstage.

The bass response of the Quad VA-One plus is tight, controlled, and impactful. It provides a solid foundation to the music without overpowering or overshadowing other frequencies. Whether you’re listening to bass-heavy genres like electronic or hip-hop, or more acoustic genres like jazz or classical, the amplifier handles low frequencies with finesse and accuracy.

The treble clarity of this amplifier is simply outstanding. High-frequency details are rendered with precision and transparency, ensuring that every subtle nuance and shimmering cymbal is faithfully reproduced. The treble response adds an extra layer of sparkle and airiness to the music, making it truly enjoyable to listen to.

When it comes to different music genres, the Quad VA-One plus excels in adapting its sound signature accordingly. It effortlessly handles various genres such as rock, pop, classical, jazz, and electronic music. Whether you’re listening to intricate classical compositions or energetic rock anthems, this amplifier showcases versatility by accurately reproducing the unique characteristics of each genre.

In summary, the sound characteristics of the Quad VA-One plus amplifier are exceptional. With its attention to detail, instrument separation, tight bass response, clear treble clarity, and adaptability across various music genres, this amplifier offers an immersive audio experience that will satisfy even the most discerning audiophiles.

Sound Performance

The sound performance of the Quad VA-One plus amplifier is truly exceptional, delivering a captivating auditory experience that will transport you into the heart of your music. With its combination of legendary tube technology and modern digital advancements, this amplifier brings the true essence of tube sound to the fingertips of every music enthusiast.

One of the standout qualities of the VA-One plus is its ability to faithfully reproduce audio signals with remarkable clarity and precision. Every note, every instrument, and every vocal is rendered with an astonishing level of detail, allowing you to hear subtle nuances and textures that may have been previously hidden. The amplifier’s 24-bit audio DAC ensures that even the most delicate musical passages are reproduced with utmost accuracy and finesse.

The dynamics of the VA-One plus are simply breathtaking. It effortlessly captures the ebb and flow of music, from gentle whispers to thunderous crescendos, with a level of dynamism that adds a whole new dimension to your listening experience. The amplifier’s ability to handle sudden changes in volume and intensity without any distortion or loss of detail is truly impressive.

In terms of tonal balance, the VA-One plus strikes a perfect equilibrium across all frequency ranges. The lows are deep and impactful, providing a solid foundation for the music, while the mids are rich and expressive, ensuring that every instrument and voice shines through with clarity and warmth. The highs are detailed and extended, adding sparkle and airiness to the overall sound signature without ever becoming harsh or fatiguing.

Whether you’re listening to classical orchestral pieces, rock anthems, or intimate jazz performances, the Quad VA-One plus delivers an immersive soundstage that pulls you right into the heart of the music. Instruments are beautifully separated, creating a sense of depth and dimensionality that enhances your listening pleasure.

In conclusion, the sound performance of the Quad VA-One plus is truly exceptional. Its ability to faithfully reproduce audio signals with clarity, dynamics, and tonal balance across different frequency ranges is a testament to the craftsmanship and engineering prowess of Quad. If you’re looking for an amplifier that will elevate your listening experience to new heights, the VA-One plus is an excellent choice.


The Quad VA-One plus amplifier offers several notable advantages that set it apart from its competitors in the market. Firstly, its unique combination of legendary tube technology and modern digital features makes it a standout choice for audiophiles seeking a true tube sound experience. The amplifier seamlessly integrates both analog and digital sources, allowing users to connect their devices via analog inputs or through optical and coaxial inputs.

In terms of design and construction, the Quad VA-One plus boasts a sleek and compact form factor, with a black color finish that adds a touch of elegance to any audio setup. Its sturdy build quality ensures durability and longevity, while its compact dimensions make it suitable for both desktop and shelf placement.

Functionality-wise, the Quad VA-One plus offers a range of features that enhance the overall user experience. It includes a remote control for convenient operation, allowing users to adjust settings from a distance without interruption. Additionally, the presence of a built-in DAC (Digital-to-Analog Converter) enables high-resolution audio playback, supporting up to 24-bit audio resolution and a sampling rate of 192 kHz.

When compared to other models in its price range, the Quad VA-One plus stands out for its exceptional sound quality and versatility. The amplifier’s tube configuration, consisting of 1 x ECC83, 2 x ECC82, 4 x EL84EH, 2 x 66SL7, 2 x 6SN7, and 1 x EZ81 tubes, contributes to its warm and rich sound signature. The amplifier delivers an impressive frequency response range from 20 Hz to 50 kHz, ensuring accurate reproduction of both low and high-frequency sounds.

Furthermore, the Quad VA-One plus offers a low distortion rate of only 0.5%, resulting in clean and detailed audio playback. With a signal-to-noise ratio of 90 dB, users can enjoy clear and immersive sound without any unwanted background noise or interference.

Overall, the Quad VA-One plus amplifier excels in its unique blend of vintage tube technology and modern digital capabilities, offering exceptional sound quality, versatile connectivity options, and a sleek design. Its advantages make it a strong competitor in its price range, providing a compelling option for audiophiles seeking superior audio performance.

Value for Money

The Quad VA-One plus amplifier offers exceptional value for money with its impressive performance, extensive features, and competitive price. When considering the performance aspect, this amplifier delivers an outstanding audio experience with its high-quality sound reproduction and powerful output.

With a wide range of connectivity options including analog and digital inputs such as optical and coaxial, the VA-One plus provides versatility in connecting various audio sources. The inclusion of a built-in DAC further enhances the flexibility of this amplifier, allowing for seamless integration with digital devices.

In terms of design and construction, the Quad VA-One plus boasts a sleek and compact build, making it ideal for both small and large spaces. The attention to detail in its construction ensures durability and longevity, ensuring that users can enjoy their music for years to come.

One of the standout features of this amplifier is its incorporation of vacuum tube technology. The use of tubes enhances the overall audio performance, adding warmth and richness to the sound. This feature alone sets it apart from many other amplifiers in its price range.

Considering its price point, the Quad VA-One plus offers an exceptional combination of features and performance that is hard to find elsewhere. It provides audiophiles with a high-end listening experience at a fraction of the cost compared to other premium amplifiers on the market.

Overall, the Quad VA-One plus represents excellent value for money. It combines top-notch audio performance, versatile functionality, and a competitive price tag, making it an attractive option for both seasoned audiophiles and newcomers to high-fidelity sound systems. Whether you are looking to upgrade your existing setup or start your journey into the world of high-quality audio, the Quad VA-One plus is definitely worth considering.


In conclusion, the Quad VA-One plus amplifier is a remarkable piece of audio equipment that combines the legendary valve sound with modern digital technology. Its design and construction are top-notch, showcasing Quad’s commitment to quality and craftsmanship.

The amplifier offers a range of functionality, including support for both analog and digital sources through its optical and coaxial inputs. While it lacks certain features like built-in USB playback and RDS FM radio support, it compensates with its built-in DAC and Bluetooth connectivity.

When it comes to sound characteristics, the Quad VA-One plus delivers an exceptional performance. With its 24-bit audio DAC and a wide frequency range from 20Hz to 50kHz, it reproduces music with incredible clarity and precision. The low distortion rate of 0.5% ensures a clean and accurate sound reproduction.

In terms of sound performance, the Quad VA-One plus truly shines. It produces a warm and rich valve sound that is highly engaging and immersive. Whether you’re listening to classical music or rocking out to your favorite rock band, this amplifier brings out the best in every genre.

One of the notable advantages of the Quad VA-One plus is its versatility. It not only functions as a stereo amplifier but also includes a built-in phono stage for vinyl enthusiasts. Additionally, the presence of a headphone output on the front panel allows for private listening sessions without compromising on audio quality.

In terms of value for money, the Quad VA-One plus is undoubtedly an investment worth considering. While it may have a higher price tag compared to some other amplifiers on the market, its exceptional build quality, versatile functionality, and outstanding audio performance justify its cost.

For potential buyers who appreciate the classic valve sound combined with modern convenience, the Quad VA-One plus is an excellent choice. However, if you prioritize features like internet radio or Wi-Fi connectivity, you may need to explore other options.

Overall, the Quad VA-One plus amplifier offers a captivating and immersive audio experience, delivering the iconic valve sound that Quad is renowned for. With its exceptional design, versatile functionality, and remarkable sound performance, it is a worthy investment for audiophiles and music enthusiasts alike.

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