Krell TRIO 300: Unleashing Audiophile Bliss


In today’s world of high-fidelity audio, finding a sound amplifier that delivers exceptional performance and uncompromising quality is essential for any audiophile. With the Krell TRIO 300, we have a powerhouse amplifier that promises to elevate your audio experience to new heights.

The Krell TRIO 300 is a three-channel amplifier built on the cutting-edge Krell iBias technology, offering an impressive 300 watts per channel. This innovative technology ensures that each output stage operates in Class A, regardless of the power level, resulting in minimal distortion and superior sound quality. Unlike other amplifier classes, Class A amplification eliminates any switching distortion, resulting in a more refined and accurate audio reproduction.

One of the standout features of the Krell TRIO 300 is its iBias technology, which continuously monitors and adjusts the output current based on the speaker impedance at any given frequency. This intelligent approach significantly reduces thermal losses and distortion while maintaining the amplifier’s compact size and power output. The internal cooling system utilizes low-noise fans that automatically activate when the power output approaches its limits, ensuring optimal performance even during demanding listening sessions.

The design and construction of the Krell TRIO 300 further enhance its audio performance. The amplifier boasts powerful toroidal transformers in its power supply unit, providing clean and stable power to each channel. The amplification stages are meticulously designed with high-linear current mirrors and super-linear high-frequency transistors, delivering exceptional power and current capabilities. The use of a balanced-differential circuitry ensures complete symmetry in signal processing, further enhancing the amplifier’s overall performance.

Functionality-wise, the Krell TRIO 300 offers convenient remote control capabilities via an RJ45 port that can be connected to an Ethernet network. This allows for seamless remote control from various devices such as smartphones, tablets, or computers through a user-friendly web interface. From adjusting screen brightness to setting up a timer for automatic shutdown, the amplifier offers a range of control options. The intuitive display provides real-time information, including idle current, output stage temperature, and fan speed. Firmware updates are also easily accessible through online downloads.

With its impressive technical specifications and advanced features, the Krell TRIO 300 is poised to deliver an unparalleled audio experience. In the following sections of this review, we will delve deeper into its sound characteristics, performance, advantages, and overall value for money. So sit back, relax, and prepare to be immersed in the world of high-fidelity sound with the Krell TRIO 300 amplifier.

Technical Specifications

The Krell TRIO 300 amplifier is a powerful 3-channel amplifier that utilizes the innovative Krell iBias technology. This amplifier delivers an impressive 300 watts per channel and operates each output stage in Class A, ensuring exceptional audio performance at any power level with high efficiency. Unlike other amplifier classes, Class A eliminates any switching distortion, resulting in a more refined and higher-quality sound reproduction.

The signal-to-noise ratio (SNR) of the TRIO 300 is rated at 116dB, indicating a high level of clarity and minimal background noise. With a total harmonic distortion (THD) of only 0.045%, this amplifier maintains excellent fidelity by keeping distortion levels extremely low.

In terms of connectivity, the TRIO 300 offers versatile options. It features three XLR analog inputs and three RCA line-level inputs, providing compatibility with various audio sources. Additionally, it includes balanced inputs for enhanced signal integrity.

The frequency response range of the TRIO 300 spans from 20Hz to 20kHz, ensuring accurate reproduction of both low and high frequencies. With a power output of 540 watts per channel at 4 ohms and 300 watts per channel at 8 ohms, this amplifier delivers ample power to drive even demanding speaker systems.

Overall, the technical specifications of the Krell TRIO 300 showcase its ability to deliver powerful and pristine sound reproduction. Its high SNR and low THD ensure exceptional audio quality, while its versatile inputs allow for seamless integration into various audio setups. Whether you are a discerning audiophile or a professional seeking top-notch performance, the TRIO 300’s technical specifications make it an impressive choice for amplification needs.

Design and Construction

The Krell TRIO 300 amplifier boasts an impressive design and construction that is both visually appealing and built to last. The amplifier features a sleek and modern exterior, with a black color that adds a touch of elegance to any audio setup.

In terms of construction, the TRIO 300 is crafted using high-quality materials that ensure durability and longevity. The use of premium components speaks to the attention to detail that Krell has put into this amplifier.

One notable design feature of the TRIO 300 is its efficient cooling system. The inclusion of low-noise fans automatically activates when the power output approaches its maximum limit, ensuring optimal performance without compromising on sound quality. This clever cooling mechanism prevents overheating and allows for extended listening sessions without any interruptions.

Additionally, the TRIO 300 incorporates design elements that minimize interference and maximize signal integrity. The connectors and switches are of exceptional quality, providing a solid and secure connection for all audio sources. This attention to detail ensures minimal signal loss and enhances overall audio performance.

Overall, the design and construction of the Krell TRIO 300 amplifier exemplify a commitment to excellence. From its sleek exterior to its high-quality components, this amplifier is built to deliver exceptional audio experiences while maintaining longevity and reliability.


The Krell TRIO 300 amplifier offers a wide range of functionality, making it a versatile choice for audio enthusiasts. It provides various connectivity options to accommodate different audio sources, including CD players, computers, smartphones, and more. With three XLR analog inputs and three RCA line inputs, it offers flexibility in connecting multiple devices simultaneously.

One notable feature of the TRIO 300 is its balanced input, which allows for improved signal transmission and reduced interference. This ensures a cleaner and more accurate audio reproduction. Additionally, the amplifier includes an integrated DAC (Digital-to-Analog Converter), enabling direct connection to digital sources such as computers or streaming devices.

In terms of operating modes, the TRIO 300 does not disappoint. It offers balance controls, allowing users to adjust the soundstage according to their preferences. This feature is particularly useful for achieving optimal sound reproduction in different listening environments. Additionally, the amplifier provides tone adjustments, allowing users to fine-tune the bass, midrange, and treble frequencies to suit their personal preferences.

The TRIO 300 also incorporates advanced control options, including remote control functionality. With the included remote, users can easily adjust volume levels, switch between input sources, and access various settings from the comfort of their listening position. Furthermore, the amplifier supports integration into smart home systems through its Triger compatibility.

Overall, the functionality of the Krell TRIO 300 amplifier is impressive and caters to the needs of audiophiles who value versatility and convenience. Its wide range of connectivity options, balance controls, tone adjustments, and remote control functionality make it a user-friendly and adaptable choice for any audio setup.

Sound Characteristics

The Krell TRIO 300 amplifier delivers an exceptional sound quality that will captivate any audiophile. With its advanced technology and meticulous design, this amplifier offers a truly immersive audio experience.

One of the standout features of the TRIO 300 is its ability to provide remarkable detail in music reproduction. Every instrument and vocal is rendered with precision and clarity, allowing you to hear subtle nuances and textures that might have been previously unnoticed. The amplifier excels in instrument separation, creating a wide soundstage where each element of the music is distinct and well-defined.

The bass response of the TRIO 300 is deep, tight, and controlled. It adds a powerful foundation to the music without overpowering or muddying other frequencies. Whether you’re listening to electronic beats or orchestral compositions, the amplifier reproduces the low-end frequencies with accuracy and impact.

In terms of treble clarity, the TRIO 300 shines. The high frequencies are crisp, detailed, and never harsh or fatiguing. This allows for a smooth and enjoyable listening experience across various genres of music. The amplifier effortlessly handles delicate strings, shimmering cymbals, and intricate vocal harmonies, ensuring that every note is reproduced faithfully.

When it comes to overall sound presentation, the TRIO 300 offers a balanced and natural sound signature. It doesn’t favor any particular frequency range but instead strives for accuracy and neutrality. This makes it suitable for a wide range of music genres, from classical to rock to jazz. The amplifier faithfully reproduces the intended sound of the recording, allowing you to fully immerse yourself in the music as it was meant to be heard.

No matter what genre of music you prefer, the Krell TRIO 300 amplifier elevates your listening experience with its exceptional sound characteristics. Its ability to deliver remarkable detail, precise instrument separation, controlled bass response, clear treble, and balanced sound presentation make it a top choice for discerning audiophiles.

Sound Performance

The Krell TRIO 300 amplifier delivers an exceptional sound performance that will transport you into a world of pure audio bliss. With its advanced technology and meticulous engineering, this amplifier excels in faithfully reproducing audio signals with remarkable clarity, dynamics, and tonal balance across the entire frequency spectrum.

From the moment you press play, the TRIO 300 captivates your senses with its unrivaled ability to bring music to life. The amplifier effortlessly unveils intricate details within the music, allowing you to hear every subtle nuance and texture. Whether it’s the delicate plucking of guitar strings or the rich resonance of a grand piano, the TRIO 300 ensures that every note is reproduced with utmost accuracy and precision.

One of the standout features of this amplifier is its ability to maintain a balanced soundstage. The sound is beautifully spread out, creating a captivating three-dimensional experience that makes you feel like you’re right in the middle of a live performance. The instrument separation is impeccable, allowing each instrument to shine individually while still blending harmoniously together.

The TRIO 300 also impresses with its dynamic range. It effortlessly handles both soft and loud passages, ensuring that no detail gets lost or distorted, even at high volumes. The amplifier’s ability to accurately reproduce the dynamics of a recording adds a level of realism and excitement to your listening experience that is truly captivating.

Furthermore, the tonal balance of the TRIO 300 is nothing short of exceptional. The bass response is tight and controlled, providing a solid foundation for the music without overpowering other frequencies. The midrange is warm and natural, allowing vocals and instruments to shine with lifelike presence. The highs are crisp and detailed, adding sparkle and airiness to the overall sound.

Whether you’re listening to classical symphonies, rock anthems, or jazz improvisations, the TRIO 300 effortlessly adapts to any genre and delivers an immersive and engaging listening experience. Its ability to faithfully reproduce audio signals with clarity, dynamics, and tonal balance is a testament to its exceptional sound performance.

In conclusion, the sound performance of the Krell TRIO 300 amplifier is nothing short of extraordinary. It transports you into a world of sonic excellence, where every note is rendered with precision and every detail is brought to life. With its impeccable clarity, dynamic range, and tonal balance, the TRIO 300 sets a new standard for audio reproduction and ensures that your music sounds as it was intended to be heard.


The Krell TRIO 300 amplifier offers several distinct advantages that set it apart from its competitors in the market.

Firstly, the use of Krell’s innovative iBias technology ensures that each output stage operates in Class A, resulting in a higher quality sound with minimal distortion. Unlike other amplifier technologies, the iBias technology tracks the output current considering the impedance of the speakers at a given frequency. This not only reduces heat dissipation and distortion but also maintains the amplifier’s compact size without compromising on power.

Additionally, the TRIO 300 features a robust power supply with powerful toroidal transformers. The amplification stages, rectifiers, and filtering capacitors are all integrated into modules that connect to massive heat sinks. This design reduces signal path length, minimizes internal resistance, and enhances energy transfer to the speakers.

The use of high-linear current mirrors and super-linear high-frequency transistors in the amplification circuitry further contributes to minimal distortion. The amplifier’s balanced-differential scheme ensures complete symmetry and enhances overall performance.

Furthermore, the TRIO 300 comes equipped with an RJ45 port for Ethernet connectivity, enabling convenient remote control through a web interface. Users can easily manage various settings such as screen brightness and program shutdown time from their smartphones, tablets, or computers.

In terms of value for money, the Krell TRIO 300 offers exceptional performance for its price range. When compared to other models in its class, it stands out with its advanced technology, superior sound quality, and comprehensive functionality.

Overall, the Krell TRIO 300 amplifier excels in providing a high-quality audio experience with its innovative technology, robust construction, extensive features, and excellent value for money. It is undoubtedly a top choice for audiophiles seeking unparalleled performance in their home audio systems.

Value for Money

The Krell TRIO 300 amplifier offers exceptional value for money, combining high-performance audio capabilities with a range of impressive features at a competitive price point. With its powerful 300 watts per channel and innovative iBias technology, this amplifier delivers outstanding sound quality that rivals more expensive options on the market.

In terms of performance, the TRIO 300 excels in delivering clean and precise audio reproduction across the entire frequency range. The use of high-quality components and the balanced-differential circuitry contribute to minimal distortion and enhanced clarity in the sound output. Whether you’re listening to delicate classical music or rocking out to dynamic rock tracks, this amplifier ensures an immersive and enjoyable listening experience.

The TRIO 300 also boasts a comprehensive set of features that further enhance its value proposition. The inclusion of an RJ45 port enables convenient remote control via a web interface, allowing users to adjust settings and monitor various parameters from their smartphones, tablets, or computers. This level of flexibility and convenience adds significant value to the overall user experience.

Furthermore, the amplifier’s sturdy construction and thoughtful design ensure long-lasting durability. The incorporation of powerful toroidal transformers in the power supply unit contributes to stable and reliable performance. Additionally, the compact size and sleek black finish make it an aesthetically pleasing addition to any audio setup.

Considering its impressive performance capabilities, extensive feature set, and solid build quality, the Krell TRIO 300 represents excellent value for money in the high-end audio amplifier market. It strikes a perfect balance between affordability and uncompromising audio performance, making it a compelling choice for both audiophiles and music enthusiasts seeking exceptional sound quality without breaking the bank.

In conclusion, if you are looking for an amplifier that offers outstanding performance, advanced features, and excellent value for money, then the Krell TRIO 300 is undoubtedly worth considering. Its ability to deliver powerful yet refined sound reproduction combined with its user-friendly functionality make it a standout option in its price range. With the TRIO 300, you can elevate your audio experience without compromising your budget.


In conclusion, the Krell TRIO 300 amplifier is a powerhouse that delivers exceptional performance and audio quality. With its innovative iBias technology and class A amplification, it ensures clean and distortion-free sound reproduction across all power levels. The design and construction of the amplifier are top-notch, with high-quality components and efficient cooling mechanisms.

The functionality of the TRIO 300 is impressive, offering remote control capabilities through an RJ45 port connected to an Ethernet network. This allows for convenient control from smartphones, tablets, or computers. The built-in DAC further enhances the versatility of the amplifier, providing a seamless integration with digital sources.

When it comes to sound characteristics, the TRIO 300 excels in delivering a detailed and immersive listening experience. The balanced-differential circuitry ensures excellent channel separation and accurate stereo imaging. The wide frequency response range from 20Hz to 20kHz captures every nuance of the audio content, while the low signal-to-noise ratio of 116dB guarantees a clean and dynamic sound output.

In terms of sound performance, the TRIO 300 impresses with its ability to drive speakers with ease. With a power output of 540W per channel at 4 Ohms and 300W per channel at 8 Ohms, it can handle even demanding speaker setups without compromising on clarity or dynamics. The minimal distortion level of 0.045% further contributes to the overall fidelity of the audio reproduction.

One of the major advantages of the TRIO 300 is its integration into smart home systems through Triger support. This allows for seamless control and integration with other devices in your home automation setup.

Considering its technical specifications, exceptional sound quality, and advanced features, the Krell TRIO 300 offers excellent value for money. While it may be on the higher end in terms of price, its performance justifies the investment for audiophiles and enthusiasts who prioritize uncompromising audio quality.

In conclusion, the Krell TRIO 300 amplifier is a true powerhouse that delivers exceptional sound performance, innovative technology, and top-notch design. Its impressive functionality, balanced-differential circuitry, and high power output make it a standout choice for music lovers seeking an immersive and high-fidelity listening experience. If you are looking for an amplifier that combines power, precision, and versatility, the Krell TRIO 300 is an excellent investment that will elevate your audio setup to new heights.

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