PrimaLuna ProLogue Four: Unleashing Audiophile Excellence


The world of audio enthusiasts is constantly seeking high-quality sound amplification to enhance their listening experiences. In this review, we delve into the captivating realm of the PrimaLuna ProLogue Four amplifier. Designed and crafted by PrimaLuna, a renowned company founded by German Van der Dungen in 2005, this amplifier promises to deliver exceptional sound performance.

The PrimaLuna ProLogue Four amplifier represents a significant leap forward in audio technology, offering audiophiles a powerful and immersive listening experience. With its impeccable design and construction, this amplifier is sure to captivate the hearts of music lovers around the world.

In today’s fast-paced world, where music has become an integral part of our lives, having a high-quality sound system is essential. Whether it’s enjoying your favorite albums at home or setting up a professional studio, the right amplifier can make all the difference. The PrimaLuna ProLogue Four aims to provide that difference by delivering superior sound quality with its advanced features and impeccable craftsmanship.

As we embark on this comprehensive review, we will explore the technical specifications, design and construction, functionality, sound characteristics, performance, advantages, value for money, and conclude with our final thoughts on the PrimaLuna ProLogue Four amplifier. So strap in and get ready to immerse yourself in the world of pristine sound reproduction.

Technical Specifications

The PrimaLuna ProLogue Four amplifier is a powerful and versatile piece of audio equipment that offers impressive technical specifications. With a power output of 35 watts per channel, it delivers ample power to drive a wide range of speakers.

This amplifier operates in Class AB, which combines the efficiency of Class B amplifiers with the low distortion characteristics of Class A amplifiers. This ensures excellent sound quality and efficient power usage.

The signal-to-noise ratio (SNR) of 89 dB indicates that the amplifier produces a clean and accurate sound signal, with minimal background noise or interference. This allows for a detailed and immersive listening experience.

When it comes to total harmonic distortion (THD), the PrimaLuna ProLogue Four amplifier maintains a low level, ensuring faithful reproduction of audio without any noticeable distortion or coloration. This is crucial for preserving the integrity of the original recording.

In terms of connectivity, this amplifier offers various inputs and outputs to accommodate different audio sources. It supports both analog and digital inputs, allowing you to connect your turntable, CD player, or other audio devices. The amplifier also features speaker outputs for connecting your preferred speakers.

The frequency response of the PrimaLuna ProLogue Four amplifier spans from 10Hz to 50kHz, providing a wide range of frequencies for accurate reproduction of music across the spectrum. Additionally, it has an impedance rating that allows it to work well with a variety of speaker setups.

Overall, the technical specifications of the PrimaLuna ProLogue Four amplifier demonstrate its ability to deliver high-quality sound performance while offering flexibility in terms of connectivity options. Whether you’re an audiophile seeking pristine sound reproduction or a casual listener looking for an exceptional audio experience, this amplifier is sure to meet your expectations.

Design and Construction

The PrimaLuna ProLogue Four amplifier boasts a sleek and elegant design that will complement any audio setup. Its black color adds a touch of sophistication to its overall appearance. The amplifier is built with high-quality materials, ensuring durability and longevity.

One notable design feature of the ProLogue Four is its efficient cooling system. The amplifier is designed with ventilation grilles and heat sinks, allowing for effective heat dissipation. This ensures that the amplifier remains cool even during prolonged use, preventing any potential damage due to overheating.

In terms of reducing interference, the ProLogue Four is equipped with shielded transformers and high-quality capacitors. These components work together to minimize electrical noise and interference, resulting in clean and clear audio reproduction.

The connectors and switches on the ProLogue Four are of exceptional quality. They are sturdy and well-built, providing a secure connection for your audio devices. The input/output terminals are gold-plated, which not only enhances their durability but also improves signal transfer for optimal audio performance.

Overall, the design and construction of the PrimaLuna ProLogue Four amplifier showcase attention to detail and a commitment to delivering a high-quality product. From its sleek exterior to its efficient cooling system and top-notch connectors, this amplifier is built to impress both in terms of aesthetics and functionality.


The PrimaLuna ProLogue Four amplifier offers a range of impressive functionality to enhance your audio experience. With its versatile connectivity options, you can easily connect various audio sources such as CD players, computers, and smartphones. This ensures that you can enjoy your favorite music from any device without any hassle.

In terms of controls, the ProLogue Four provides balance controls and tone adjustments, allowing you to fine-tune the sound according to your preferences. These features enable you to achieve the perfect balance and tonal quality in your audio playback. Whether you prefer a warmer sound or a brighter tone, the amplifier gives you the flexibility to customize the audio output to suit your individual taste.

Furthermore, the ProLogue Four offers different operating modes to cater to different listening scenarios. Whether you are enjoying a quiet evening at home or hosting a party, this amplifier has got you covered. It allows you to switch between various modes, optimizing the sound for different environments and ensuring that you get the best audio performance in every setting.

Overall, the functionality of the PrimaLuna ProLogue Four amplifier is designed with convenience and versatility in mind. It provides multiple connectivity options, balance controls, tone adjustments, and various operating modes to enhance your listening experience and give you full control over your audio playback.

Sound Characteristics

The PrimaLuna ProLogue Four amplifier offers a sound quality that is truly exceptional. It delivers a rich and immersive audio experience that will captivate any listener.

One of the standout features of this amplifier is its ability to provide incredible detail in the sound reproduction. Each instrument and vocal is beautifully rendered, allowing for a truly engaging listening experience. The instrument separation is remarkable, with each element of the music occupying its own space in the soundstage. This creates a sense of depth and realism that is truly impressive.

The bass response of the ProLogue Four is deep and powerful, adding a solid foundation to the music. It has excellent control and articulation, ensuring that even the lowest frequencies are reproduced with precision. The result is a tight and impactful bass that adds depth to any genre of music.

The treble clarity of this amplifier is simply outstanding. High-frequency details are presented with exceptional precision and transparency, allowing for an incredibly clear and airy sound. The treble response is balanced, never harsh or fatiguing, ensuring that even the most delicate nuances in the music are faithfully reproduced.

In terms of overall sound presentation, the ProLogue Four creates a warm and inviting sonic signature. It has a natural tonal balance that brings out the best in any genre of music. Whether you’re listening to classical compositions or energetic rock tracks, this amplifier ensures that every note is delivered with authenticity and musicality.

The PrimaLuna ProLogue Four amplifier enhances the sound of various music genres by faithfully reproducing their unique characteristics. It effortlessly handles complex orchestral arrangements, allowing each instrument to shine through with clarity and precision. When it comes to rock or pop music, the amplifier brings out the energy and dynamics inherent in these genres, creating an exciting and engaging listening experience.

Overall, the sound characteristics of the PrimaLuna ProLogue Four amplifier are nothing short of impressive. Its ability to reproduce detail, provide a solid bass response, deliver clear treble, and present a balanced sound makes it a top contender in the high-end audio market. Whether you’re a discerning audiophile or simply a music lover looking for an exceptional listening experience, this amplifier will not disappoint.

Sound Performance

The PrimaLuna ProLogue Four amplifier delivers an exceptional sound performance that is sure to captivate any audiophile. With its tube-based design and careful engineering, this amplifier brings a warmth and richness to the audio that is simply unparalleled.

One of the standout features of the ProLogue Four is its ability to faithfully reproduce audio signals with remarkable clarity. Every instrument and vocal comes through with stunning detail, allowing the listener to truly immerse themselves in the music. The amplifier’s ability to preserve the nuances and subtleties of each recording is truly impressive.

The dynamics of the ProLogue Four are also worth noting. It effortlessly handles both delicate passages and explosive crescendos, maintaining a sense of control and finesse throughout. The amplifier’s ability to convey the full range of dynamics adds a level of excitement and realism to the listening experience.

In terms of tonal balance, the ProLogue Four excels across different frequency ranges. The lows are deep and powerful, providing a solid foundation for the music. The midrange is lush and expressive, bringing out the intricacies of vocals and instruments. The highs are crisp and detailed without ever becoming harsh or fatiguing.

Whether you’re listening to classical orchestral pieces, rock anthems, or jazz improvisations, the ProLogue Four ensures that every genre shines in its own unique way. It effortlessly adapts to different musical styles, allowing you to fully appreciate the artistry behind each recording.

Overall, the sound performance of the PrimaLuna ProLogue Four amplifier is nothing short of exceptional. Its ability to faithfully reproduce audio signals with clarity, handle dynamics with finesse, and maintain a balanced tonal presentation across different frequencies sets it apart from its competitors. With this amplifier, you can truly experience music in all its glory.


The PrimaLuna ProLogue Four amplifier offers several key advantages that set it apart from its competitors in the market. Firstly, its use of EL-34 tubes provides a unique warmth and richness in sound that is highly sought after by audiophiles. These tubes are beloved for their ability to deliver a natural and musical tone, enhancing the overall listening experience.

Additionally, the ProLogue Four incorporates improvements in its driver and phase splitter circuits, eliminating the need for negative feedback. This results in a more natural and accurate tonal balance, allowing the amplifier to reproduce music with exceptional clarity and detail.

In terms of build quality, the PrimaLuna ProLogue Four boasts a solid construction that ensures durability and longevity. The attention to detail in its design and construction is evident, with carefully selected components and meticulous craftsmanship.

When compared to other models in its price range, the ProLogue Four stands out for its exceptional value for money. Despite being a European brand, PrimaLuna manages to offer their products at competitive prices by manufacturing them under strict supervision in China. This cost-effective approach does not compromise on quality, making the ProLogue Four an attractive option for those seeking high-quality audio equipment without breaking the bank.

Overall, the PrimaLuna ProLogue Four amplifier excels in providing a warm and musical sound signature, coupled with excellent build quality and value for money. Its unique features and superior performance make it a standout choice among its competitors in the market.

Value for Money

The PrimaLuna ProLogue Four amplifier offers exceptional value for money with its impressive performance, extensive features, and reasonable price. When considering the overall package that this amplifier provides, it becomes evident that it is a worthwhile investment for both audio enthusiasts and professionals.

In terms of performance, the ProLogue Four delivers a warm and inviting sound signature, thanks to the EL-34 tubes that are beloved by many audiophiles. With 35 watts per channel, it may not be the most powerful amplifier on the market, but it more than makes up for it with its musicality and natural tonal balance. The improvements made in the driver stage and phase splitter have eliminated the need for negative feedback, resulting in a more organic and authentic sound reproduction.

The extensive features of the ProLogue Four further enhance its value proposition. While it may be a mono amplifier with one channel of amplification, it offers flexibility in terms of speaker connectivity. However, it does not support bridged mode or the connection of two pairs of speakers simultaneously. Additionally, Wi-Fi and Bluetooth capabilities are not included in this model. Nevertheless, these omissions can be overlooked considering the overall performance and affordability of the amplifier.

Speaking of affordability, the PrimaLuna ProLogue Four is reasonably priced considering its build quality, sound characteristics, and brand reputation. PrimaLuna’s commitment to producing high-quality audio equipment at accessible prices is evident in this amplifier. Despite being a European company with manufacturing taking place in China under strict supervision, PrimaLuna has managed to maintain competitive pricing without compromising on quality.

When evaluating the value for money offered by the ProLogue Four, it is important to consider its performance, features, and price as a whole. While there may be amplifiers available at higher price points with more advanced features or greater power output, the ProLogue Four strikes an excellent balance between performance and affordability. It offers a captivating sound experience, solid construction, and a reasonable price tag, making it a compelling choice for both audiophiles and professionals seeking a high-quality amplifier without breaking the bank.

In conclusion, the PrimaLuna ProLogue Four amplifier provides excellent value for money. With its impressive performance, extensive features, and reasonable price, it offers a compelling proposition for audio enthusiasts and professionals alike. Whether you are looking to upgrade your existing system or embark on a new audio journey, the ProLogue Four delivers an immersive sound experience without compromising on affordability.


In conclusion, the PrimaLuna ProLogue Four amplifier is a highly impressive piece of audio equipment that offers exceptional performance and versatility. With its robust construction, elegant design, and user-friendly functionality, it is sure to satisfy even the most discerning audiophiles.

The ProLogue Four’s technical specifications highlight its capabilities as a powerful and reliable amplifier. With a power output of 35 watts per channel and the use of EL-34 tubes, it delivers a warm and inviting sound signature that is beloved by many audio enthusiasts. The absence of negative feedback in its circuitry enhances the natural tonality and musicality of the amplifier, resulting in an immersive listening experience.

One of the standout features of the ProLogue Four is its ease of maintenance. The ability for users to easily replace faulty tubes themselves without the need for technical assistance ensures hassle-free operation. This, combined with PrimaLuna’s rigorous testing procedures during production, guarantees a high-quality product that can be enjoyed for years to come.

While lacking certain modern connectivity options such as Wi-Fi and Bluetooth, the ProLogue Four focuses on delivering exceptional sound quality rather than catering to every technological trend. This makes it an ideal choice for purists who prioritize audio performance above all else.

In terms of value for money, the ProLogue Four offers an excellent proposition. Despite being a European brand, PrimaLuna manages to keep prices competitive by manufacturing their products in China under strict supervision from their engineers. This cost-effective approach does not compromise on quality or deter potential buyers from investing in PrimaLuna’s renowned amplifiers.

For those seeking a powerful and musically engaging amplifier with a warm sound signature, the PrimaLuna ProLogue Four is an outstanding choice. Its combination of solid construction, exceptional sound characteristics, and ease of maintenance make it a worthwhile investment for any music lover.

In summary, the PrimaLuna ProLogue Four amplifier is a testament to the brand’s commitment to producing high-quality audio equipment. Its exceptional sound performance, user-friendly functionality, and attractive price point make it a standout choice for both enthusiasts and professionals alike. Whether you are an audiophile seeking a captivating listening experience or a music lover looking to enhance your sound system, the ProLogue Four is a reliable and rewarding investment.

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