E.A.R. / Yoshino M100A Solid State: Unleashing Sonic Brilliance


The world of audio enthusiasts is constantly seeking high-quality sound amplification solutions that can elevate their listening experience to new heights. In this review, we delve into the realm of hifi sound amplifiers and explore the exceptional capabilities of the E.A.R. / Yoshino M100A Solid State amplifier. This amplifier, crafted by Esoteric Audio Research Ltd., a renowned British company with a rich history in producing top-notch tube technology, promises to deliver unparalleled performance and reliability.

In today’s fast-paced world, where music has become an integral part of our lives, having a sound amplifier that can accurately reproduce the nuances and intricacies of our favorite tracks is paramount. Whether you are a professional musician, an avid audiophile, or simply someone who appreciates high-fidelity sound reproduction, the E.A.R. / Yoshino M100A Solid State amplifier aims to provide an immersive sonic experience that will leave you captivated.

With its sleek silver design and impeccable construction, this amplifier exudes elegance and sophistication. Its dimensions of 584mm in height, 254mm in width, and 508mm in depth make it a compact yet powerful addition to any audio setup. Weighing in at 69.85kg, it showcases the robustness that is expected from a high-end amplifier.

The technical specifications of the E.A.R. / Yoshino M100A Solid State amplifier further emphasize its exceptional capabilities. With a power consumption rating of 100 watts, it ensures ample power delivery for even the most demanding speakers. The frequency range spans from an impressive low of 3Hz to a crystal-clear high of 40kHz, allowing for accurate reproduction across the entire spectrum. The low harmonic distortion percentage of just 2% ensures that your music remains faithful to the original recording.

Equipped with one RCA linear input and one balanced input, this amplifier offers versatility in connecting various audio sources. Additionally, it features one RCA linear output and one balanced output, providing options for connecting to external devices or amplifiers. The presence of a level indicator adds convenience and ease of use.

In the world of wireless connectivity, the E.A.R. / Yoshino M100A Solid State amplifier focuses solely on its core function of delivering exceptional sound quality, without the distractions of Wi-Fi or Bluetooth capabilities. This singular focus ensures that every ounce of attention is dedicated to achieving the best possible audio performance.

In the following sections, we will explore the design and construction, functionality, sound characteristics, sound performance, advantages, value for money, and ultimately conclude our review with our final thoughts on the E.A.R. / Yoshino M100A Solid State amplifier. So let’s dive in and uncover the sonic wonders that await us!

Technical Specifications

The E.A.R. / Yoshino M100A Solid State amplifier boasts impressive technical specifications that contribute to its exceptional audio performance. With a power output of 100 watts per channel at 8 ohms, this amplifier delivers robust and dynamic sound reproduction.

In terms of sound quality, the amplifier offers a low total harmonic distortion (THD) of just 2%, ensuring clean and accurate audio reproduction. The signal-to-noise ratio (SNR) is also noteworthy, guaranteeing minimal background noise and maximum clarity in the audio signal.

The amplifier features a range of inputs and outputs to accommodate various audio setups. It includes one RCA input for connecting external devices such as CD players or turntables. Additionally, it offers a balanced input for enhanced audio transmission and compatibility with professional audio equipment.

With regards to compatibility, the amplifier supports a wide frequency response range from 3 Hz to 40,000 Hz, ensuring faithful reproduction of both low and high-frequency sounds. This allows for an immersive listening experience across different genres of music. The impedance of the amplifier is optimized for efficient power delivery, resulting in improved overall performance.

Overall, the technical specifications of the E.A.R. / Yoshino M100A Solid State amplifier demonstrate its commitment to delivering high-quality sound reproduction with minimal distortion and exceptional clarity. Its versatile inputs and outputs make it suitable for various audio setups, while its wide frequency response ensures accurate sound reproduction across the entire audible spectrum.

Design and Construction

The E.A.R. / Yoshino M100A Solid State amplifier boasts an elegant and sleek design that exudes sophistication. Its silver color adds a touch of modernity to any audio setup. The amplifier is expertly constructed by Esoteric Audio Research Ltd., a renowned brand known for their high-quality and reliable tube technology.

The external appearance of the amplifier showcases a sturdy and robust build, with attention to detail evident in every aspect. The materials used in its construction are of top-notch quality, ensuring durability and longevity. The amplifier’s solid construction not only enhances its overall aesthetic appeal but also contributes to its excellent performance.

One notable design feature of the E.A.R. / Yoshino M100A is its efficient cooling system. The amplifier is designed to dissipate heat effectively, preventing overheating and ensuring optimal performance even during prolonged use. This feature not only prolongs the lifespan of the amplifier but also ensures consistent audio quality.

In terms of reducing interference, the E.A.R. / Yoshino M100A incorporates advanced shielding techniques to minimize any unwanted noise or distortion. This results in a clean and pure audio signal, allowing listeners to enjoy music without any distractions or distortions.

The connectors and switches on the amplifier are of exceptional quality, further enhancing its overall reliability. The connectors provide a secure and stable connection, minimizing signal loss and maintaining audio integrity. The switches are well-designed and responsive, allowing for easy control and adjustment of various settings.

Overall, the design and construction of the E.A.R. / Yoshino M100A Solid State amplifier exemplify excellence in craftsmanship. From its sleek exterior to its efficient cooling system and high-quality connectors, this amplifier offers both aesthetic appeal and superior functionality.


The E.A.R. / Yoshino M100A Solid State amplifier offers a wide range of functionality, making it a versatile choice for audio enthusiasts. With its various connectivity options, this amplifier allows you to connect different audio sources such as CD players, computers, smartphones, and more.

Equipped with a balance control feature, the amplifier enables precise adjustments to achieve the desired stereo balance. This is especially useful when listening to recordings that may have imbalances in the left and right channels. Additionally, the presence of tone adjustments allows users to fine-tune the sound according to their preferences, enhancing the overall listening experience.

The amplifier also provides other operating modes that cater to different audio setups and preferences. Whether you prefer a pure and unaltered sound or want to add some warmth and richness to your music, the E.A.R. / Yoshino M100A Solid State amplifier offers flexibility in tailoring the sound to your liking.

Furthermore, the inclusion of multiple inputs and outputs, including RCA and balanced connections, ensures compatibility with a wide range of audio equipment. This versatility allows for seamless integration into any existing audio system setup.

Overall, the functionality of the E.A.R. / Yoshino M100A Solid State amplifier is impressive, providing users with various connectivity options and control features to enhance their listening experience. Whether you are a casual listener or an audiophile seeking high-quality sound reproduction, this amplifier offers the versatility and flexibility needed to meet your audio needs.

Sound Characteristics

The E.A.R. / Yoshino M100A Solid State amplifier delivers an exceptional sound quality that is sure to captivate any audiophile. The sound characteristics of this amplifier are truly remarkable, offering a level of detail and clarity that brings music to life.

One of the standout features of the M100A is its ability to provide excellent instrument separation. Each instrument is distinct and well-defined, allowing the listener to easily discern individual elements within the music. This enhances the overall listening experience and creates a sense of depth and realism.

The bass response of the M100A is powerful and precise. It reproduces low frequencies with accuracy and control, adding depth and impact to the music without overpowering or distorting other elements. Whether you’re listening to electronic beats or orchestral compositions, the amplifier ensures that the bass is tight, controlled, and well-balanced.

The treble clarity of the M100A is another highlight. It reproduces high frequencies with exceptional detail and precision, allowing delicate nuances in vocals, cymbals, and strings to shine through. The amplifier maintains a smooth and natural treble presentation, avoiding any harshness or sibilance that can detract from the overall listening experience.

Overall, the sound presentation of the M100A is captivating and engaging. It offers a balanced and neutral sound signature that faithfully reproduces the original recording with accuracy. Whether you’re listening to classical music, rock, jazz, or any other genre, this amplifier ensures that every note is delivered with utmost clarity and fidelity.

The impact of the M100A on different music genres is impressive. It seamlessly adapts to various genres, showcasing their unique characteristics while maintaining its own sonic integrity. From the intricate details of classical compositions to the energy and dynamics of rock and pop music, this amplifier effortlessly handles every genre with finesse.

In conclusion, the E.A.R. / Yoshino M100A Solid State amplifier excels in its sound characteristics. With exceptional instrument separation, powerful bass response, clear treble presentation, and an overall captivating sound performance, this amplifier is a true delight for music enthusiasts. It faithfully reproduces various music genres with accuracy and finesse, making it a versatile and highly capable amplifier for any audiophile’s setup.

Sound Performance

The sound performance of the E.A.R. / Yoshino M100A Solid State amplifier is nothing short of exceptional. It effortlessly transports the listener into a world of immersive auditory bliss, delivering an unparalleled level of sonic clarity and precision.

One of the standout qualities of this amplifier is its ability to faithfully reproduce audio signals with remarkable accuracy. Every note, every instrument, and every vocal is reproduced with stunning detail and realism. The amplifier’s transparent sound signature ensures that no nuances or subtleties are lost in the audio playback, allowing the listener to truly experience the music as it was intended.

The clarity provided by the E.A.R. / Yoshino M100A is truly remarkable. The amplifier excels in presenting a clean and transparent soundstage, allowing each element within the music to be heard with utmost precision. The separation between instruments is outstanding, creating a three-dimensional sonic image that brings the music to life.

In terms of dynamics, this amplifier shines brightly. It effortlessly handles both delicate passages and explosive crescendos with finesse and control. The M100A delivers a wide dynamic range that adds depth and excitement to the listening experience, ensuring that no detail is overlooked.

Furthermore, the tonal balance provided by this amplifier is simply exquisite. From the deep rumble of bass frequencies to the sparkling highs, every frequency range is handled with finesse and accuracy. The M100A strikes a perfect balance between warmth and neutrality, ensuring that no part of the frequency spectrum overpowers or gets lost in the mix.

Whether you’re listening to classical symphonies or high-energy rock anthems, the E.A.R. / Yoshino M100A Solid State amplifier delivers an audio performance that will leave you captivated. Its ability to faithfully reproduce audio signals with clarity, dynamics, and tonal balance across different frequency ranges sets it apart from its competitors.

In conclusion, if you’re seeking an amplifier that can elevate your listening experience to new heights, the E.A.R. / Yoshino M100A Solid State amplifier is a worthy contender. Its exceptional sound performance, characterized by clarity, dynamics, and tonal balance, ensures that every note and every detail of your favorite music is brought to life in a way that will leave you in awe.


The E.A.R. / Yoshino M100A Solid State amplifier offers several distinct advantages that set it apart from its competitors in the market. Firstly, its solid state design ensures a reliable and consistent performance, eliminating the need for tube replacements and maintenance associated with tube amplifiers.

In terms of sound quality, the M100A excels with its exceptional clarity and precision. The amplifier delivers a detailed and transparent audio reproduction, allowing listeners to experience the full range of nuances in their music. The low levels of distortion contribute to a clean and natural sound signature, making it an ideal choice for audiophiles who value accuracy and fidelity.

Furthermore, the M100A boasts a robust construction and high-quality components, ensuring durability and longevity. The attention to detail in its design is evident, with its sleek silver finish adding a touch of elegance to any audio setup.

When compared to other models in its price range, the E.A.R. / Yoshino M100A stands out as a top contender. Its power output of 100 watts per channel provides ample headroom for driving a wide range of speakers, delivering dynamic and impactful sound reproduction. Additionally, the inclusion of both RCA and balanced inputs offers flexibility in connecting various audio sources.

In summary, the E.A.R. / Yoshino M100A Solid State amplifier offers numerous advantages that make it a standout choice among its competitors. Its solid state design ensures reliability and ease of use, while its exceptional sound quality and robust construction elevate the listening experience. When considering amplifiers in this price range, the M100A sets itself apart with its powerful performance and versatility.

Value for Money

When considering the value for money of the E.A.R. / Yoshino M100A Solid State amplifier, it is important to take into account its exceptional performance, extensive features, and competitive price point. This amplifier offers a remarkable combination of power, versatility, and audio quality at a price that is reasonable and justifiable.

In terms of performance, the M100A delivers a powerful 100 watts per channel (8 Ohms), allowing it to drive even demanding speakers with ease. The low levels of non-linear distortion (2%) ensure accurate and faithful reproduction of the audio signal, resulting in a clean and immersive listening experience. Additionally, the wide frequency range of 3 Hz to 40,000 Hz ensures that no detail is lost in the music, capturing both the delicate nuances and impactful dynamics.

The M100A also boasts an impressive array of features that further enhance its value proposition. With a balanced input and output, as well as a single RCA input and output, this amplifier offers flexibility in connecting various audio sources and components. The inclusion of a level meter allows for precise monitoring of the output signal, ensuring optimal performance. While lacking Wi-Fi or Bluetooth connectivity, these omissions are justified by the amplifier’s focus on delivering exceptional sound quality rather than unnecessary frills.

Considering its performance and features, the price point of the E.A.R. / Yoshino M100A Solid State amplifier represents excellent value for money. Comparable amplifiers on the market often come with higher price tags without necessarily offering superior performance or build quality. The M100A provides audiophiles with an opportunity to experience high-quality sound reproduction without breaking the bank.

In conclusion, the E.A.R. / Yoshino M100A Solid State amplifier offers outstanding value for money due to its exceptional performance, versatile features, and competitive price point. It delivers powerful and accurate sound reproduction while providing flexibility in connectivity options. For those seeking a high-quality amplifier without compromising their budget, the M100A is an excellent choice.


In conclusion, the E.A.R. / Yoshino M100A Solid State amplifier is an exceptional piece of audio equipment that showcases the expertise and craftsmanship of Esoteric Audio Research Ltd. With a rich history in producing high-quality tube amplifiers, founder Tim de Paravicini has once again proven his mastery in the field.

The technical specifications of the M100A are impressive, with a power output of 100 watts per channel at 8 ohms and a frequency range spanning from 3 Hz to 40,000 Hz. The amplifier’s sleek silver design adds a touch of elegance to any audio setup, while its solid construction ensures durability and longevity.

Functionally, the M100A offers a balance between simplicity and versatility. It features one RCA input and one balanced input, as well as one RCA output and one balanced output. The inclusion of a level indicator allows for precise monitoring of volume levels. While it lacks Wi-Fi and Bluetooth connectivity options, this amplifier is focused on delivering pure audio performance rather than unnecessary frills.

When it comes to sound characteristics, the M100A truly shines. With minimal distortion at just 2%, this amplifier reproduces audio with exceptional clarity and accuracy. The low-frequency response provides deep and controlled bass, while the high-frequency range offers detailed and nuanced treble. The midrange is warm and inviting, allowing for an immersive listening experience across various genres.

In terms of sound performance, the M100A excels in delivering a captivating audio experience. Whether you’re listening to classical music or rocking out to your favorite band, this amplifier effortlessly brings out the subtleties in each note and instrument. The soundstage is expansive, creating a three-dimensional atmosphere that envelops the listener.

One of the major advantages of the E.A.R. / Yoshino M100A Solid State amplifier is its reliability and longevity. With over 30 years of experience in producing top-notch audio equipment, Esoteric Audio Research Ltd. has established a reputation for quality and dependability. The 1-year warranty further ensures peace of mind for potential buyers.

Considering its exceptional audio performance, solid construction, and renowned brand reputation, the E.A.R. / Yoshino M100A Solid State amplifier offers excellent value for money. While it may be a significant investment, the long-term enjoyment and satisfaction it provides make it well worth the price.

In conclusion, the E.A.R. / Yoshino M100A Solid State amplifier is a true testament to the expertise and dedication of Esoteric Audio Research Ltd. Its impressive technical specifications, elegant design, and outstanding sound characteristics make it a top choice for audiophiles seeking an immersive and high-fidelity listening experience. If you prioritize exceptional audio performance and reliability, the M100A is an investment that will not disappoint.

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