Copland CTA 405: Elevating Audio Excellence


In the world of audio enthusiasts, high-quality sound amplification is a crucial element in achieving the ultimate listening experience. Whether you are a music lover, audiophile, or professional sound engineer, the right amplifier can make all the difference in bringing your favorite music to life. In this review, we will delve into the captivating world of the Copland CTA 405 amplifier.

The Copland CTA 405 is a true tube stereo amplifier that seamlessly combines classic design with cutting-edge technological advancements. With its exceptional sound reproduction capabilities, this amplifier sets itself apart from the competition. It boasts a frequency range of 5Hz to an impressive 100kHz, ensuring that every nuance and detail of your music is faithfully reproduced. The output power of 100W and low feedback currents allow for pristine and stable sound performance with minimal distortion.

This model includes a phono stage, voltage amplifier, power amplifier, and power supply. The power supply plays a vital role in the creation of this amplifier, with a power rating of approximately 300W and high-quality output transformers.

The Copland CTA 405 is housed in a stylishly designed and robust chassis. The front panel features all the necessary controls and buttons for seamless operation, including a volume knob, StandBy button, input selection switch, and loop control button. The front panel also includes indicator lights for easy monitoring of power status. On the rear panel, you will find all the necessary inputs and outputs, including phono connectors, speaker terminals, and power switch. Additionally, a remote control is included with this model for convenient remote operation. If you have a Copland CD player, you can also use the remote control to manage both devices simultaneously.

With its impressive technical specifications and sleek design, the Copland CTA 405 promises to deliver an unparalleled audio experience. Let us now explore its features and functionalities in more detail to understand why it stands out in the world of hi-fi amplifiers.

Technical Specifications

The Copland CTA 405 is a true tube stereo amplifier that combines classic design with the latest technological advancements. It delivers exceptional sound quality with minimal distortion. With a power output of 100W, this amplifier provides ample power to drive your speakers and fill your room with rich, detailed audio.

The signal-to-noise ratio (SNR) of 90dB ensures that the amplifier produces a clean and clear sound, free from unwanted background noise. The total harmonic distortion (THD) of 0.4% guarantees accurate reproduction of the audio signal without any significant distortion.

Featuring six RCA inputs, the Copland CTA 405 offers versatile connectivity options for various audio sources such as CD players, turntables, and media players. Additionally, it includes one RCA output for connecting to external devices or recording equipment.

The amplifier supports a wide frequency response range from 5Hz to 100kHz, allowing for accurate reproduction of both low and high-frequency sounds. It is compatible with a variety of audio formats, ensuring compatibility with your favorite music sources.

With an impedance rating suitable for most speakers, the Copland CTA 405 can easily drive a range of speaker configurations without compromising on sound quality. Whether you have bookshelf speakers or floor-standing towers, this amplifier will deliver exceptional performance.

Overall, the technical specifications of the Copland CTA 405 demonstrate its ability to provide powerful and precise audio reproduction while offering flexibility in terms of connectivity options.

Design and Construction

The Copland CTA 405 amplifier exudes a sleek and stylish aesthetic with its well-crafted design. The amplifier is housed in a robust and rigid chassis that not only enhances its durability but also adds to its overall visual appeal. The black color of the amplifier adds a touch of elegance to any audio setup.

When it comes to construction, the Copland CTA 405 incorporates a combination of classic design elements and modern technological advancements. This fusion results in a high-quality amplifier that delivers exceptional sound reproduction. The materials used in its construction are carefully selected to ensure optimal performance and longevity.

One notable design feature of the Copland CTA 405 is its efficient cooling system. The amplifier is designed to dissipate heat effectively, preventing overheating and ensuring stable performance even during prolonged use. This feature not only enhances the longevity of the amplifier but also contributes to its overall reliability.

In terms of reducing interference, the Copland CTA 405 employs advanced shielding techniques. These techniques help minimize external electromagnetic interference, allowing for cleaner and more accurate sound reproduction. This attention to detail in design ensures that you can enjoy your music without any unwanted distortions or interruptions.

The connectors and switches on the Copland CTA 405 are of excellent quality. They are sturdy, reliable, and provide secure connections for your audio devices. The attention to detail in the construction of these components reflects the overall craftsmanship of the amplifier.

Overall, the design and construction of the Copland CTA 405 amplifier are top-notch. Its visually appealing appearance, efficient cooling system, reduced interference, and high-quality connectors and switches all contribute to an amplifier that is built to deliver outstanding audio performance for years to come.


The Copland CTA 405 amplifier offers a wide range of connectivity options, making it versatile and compatible with various audio sources. Whether you want to connect your CD player, computer, or smartphone, this amplifier has got you covered. With six RCA inputs, you can easily connect multiple devices and switch between them effortlessly using the signal input selector knob on the front panel.

In addition to its connectivity options, the CTA 405 also provides users with convenient control features. The amplifier includes a balance control, allowing you to adjust the sound distribution between the left and right channels for a more personalized listening experience. It also offers tone adjustments, enabling you to fine-tune the bass and treble frequencies to suit your preferences.

Furthermore, this amplifier incorporates other operating modes that enhance its functionality. The inclusion of a standby button allows for quick power-saving when not in use, reducing energy consumption. The loop control button enables easy monitoring of audio signals and ensures optimal performance.

Overall, the Copland CTA 405 amplifier offers exceptional functionality with its diverse connectivity options and convenient control features. Whether you’re a music enthusiast or an audiophile, this amplifier provides the flexibility and customization options needed to enhance your listening experience.

Sound Characteristics

The Copland CTA 405 amplifier delivers a sound quality that is truly exceptional. It offers a level of detail and clarity that brings out the nuances in each musical piece. The instrument separation is remarkable, allowing each instrument to be heard distinctly, creating a realistic and immersive listening experience.

One of the standout features of this amplifier is its bass response. The low frequencies are tight, controlled, and powerful, adding depth and impact to the music. Whether you’re listening to electronic dance music or orchestral pieces, the Copland CTA 405 reproduces the bass with precision and authority.

The treble clarity of this amplifier is outstanding. The high frequencies are crisp, clear, and well-defined, without any harshness or sibilance. The amplifier maintains a delicate balance, ensuring that the treble remains smooth and detailed, enhancing the overall musical experience.

When it comes to sound presentation, the Copland CTA 405 creates a wide and spacious soundstage. The music feels expansive, with excellent imaging that allows you to pinpoint the location of each instrument within the recording. This amplifier truly brings the music to life, making you feel like you are in the presence of a live performance.

The Copland CTA 405 excels in handling various music genres. Whether you enjoy rock, jazz, classical, or pop, this amplifier showcases the unique characteristics of each genre with finesse. It effortlessly captures the energy and dynamics of rock music, the subtleties and improvisation of jazz, the grandeur and emotion of classical compositions, and the catchy melodies of pop songs. No matter what genre you prefer, this amplifier ensures that every note is reproduced faithfully and with exceptional quality.

In summary, the Copland CTA 405 amplifier offers an impressive sound quality with its detailed instrument separation, powerful bass response, clear treble clarity, and immersive sound presentation. It enhances the listening experience across various music genres, bringing out the best in each recording. Whether you are a discerning audiophile or a casual music lover, the Copland CTA 405 is sure to impress with its exceptional sound characteristics.

Sound Performance

The Copland CTA 405 amplifier delivers an exceptional sound performance that truly captivates the listener. With its ability to faithfully reproduce audio signals, this amplifier offers a level of clarity and precision that is truly impressive.

When it comes to tonal balance, the CTA 405 excels in providing a well-rounded and natural sound. The amplifier ensures that no frequency range is overemphasized or overshadowed, resulting in a balanced and immersive listening experience. Whether you’re listening to delicate classical music or energetic rock tracks, the CTA 405 maintains a consistent tonal balance throughout.

One of the standout features of the CTA 405 is its dynamic range. The amplifier effortlessly handles both soft and loud passages with ease, allowing for a sense of realism and depth in the music. The dynamics are skillfully reproduced, ensuring that every nuance and detail in the recording is brought to life.

Additionally, the CTA 405 exhibits remarkable clarity in its sound reproduction. Instruments and vocals are rendered with exceptional precision, allowing for an accurate portrayal of the original recording. This level of clarity adds a layer of realism to the listening experience, making it feel as though you’re right there in the studio or concert hall.

The amplifier’s ability to handle different frequency ranges is also worth mentioning. From the deep rumble of bass notes to the sparkling highs of cymbals and strings, the CTA 405 ensures that each frequency range is reproduced with finesse and accuracy. This attention to detail results in a cohesive and well-defined soundstage, where every instrument occupies its rightful place.

Overall, the sound performance of the Copland CTA 405 amplifier is nothing short of exceptional. Its ability to faithfully reproduce audio signals with clarity, dynamics, and tonal balance across different frequency ranges sets it apart from other amplifiers in its class. Whether you’re an audiophile or simply someone who appreciates high-quality sound, the CTA 405 will undoubtedly elevate your listening experience to new heights.


The Copland CTA 405 amplifier offers several notable advantages that set it apart from its competitors in the market. Firstly, its combination of classic design and modern technology results in exceptional sound reproduction quality. With a frequency range reaching up to 100kHz and a minimum frequency of 5kHz, this amplifier ensures a wide and accurate audio spectrum.

One of the standout features of the Copland CTA 405 is its powerful output capability. With a stereo power output of 100W, it delivers ample power to drive speakers and fill any room with rich and immersive sound. Additionally, the low feedback currents contribute to a clean and stable sound output with minimal distortion.

In terms of functionality, this amplifier excels with its comprehensive set of components. It includes a phono preamplifier, a voltage amplifier, a power amplifier, and a power supply unit. The attention given to the power supply unit, with its 300W capacity and output transformers, ensures optimal performance and reliability.

The design and construction of the Copland CTA 405 also deserve praise. Housed in an elegantly designed and sturdy chassis, it exudes sophistication while providing easy access to all necessary controls on the front panel. The inclusion of indicator lights allows for convenient monitoring of the device’s status.

When comparing the Copland CTA 405 to other amplifiers in its price range, it stands out as a top contender. Its combination of high-quality components, advanced technical features, and exceptional sound performance make it a worthy investment for audiophiles seeking an immersive listening experience.

Overall, the Copland CTA 405 offers significant advantages over its competitors. Its exceptional sound quality, powerful output capability, comprehensive functionality, elegant design, and competitive pricing make it an amplifier that stands out in its class. Whether you are a music enthusiast or a professional seeking top-notch audio performance, the Copland CTA 405 is sure to impress.

Value for Money

The Copland CTA 405 amplifier offers exceptional value for money, combining high-performance audio capabilities with a reasonable price point. With its impressive specifications and features, this amplifier delivers a level of performance that exceeds expectations for its price range.

When considering the value proposition of the Copland CTA 405, it is important to highlight its powerful output of 100W per channel, allowing for dynamic and immersive sound reproduction. The use of high-quality components, including the 4 x KT88, 2 x 12BH7, 3 x E83CC, and 2 x 6922 vacuum tubes, ensures a clean and accurate audio signal.

Furthermore, the inclusion of a phono preamplifier with RIAA correction adds versatility to the amplifier, allowing users to connect their turntables directly without the need for additional equipment. This feature alone adds significant value to the overall package.

Considering its construction and design, the Copland CTA 405 boasts a sturdy and stylish chassis that enhances both aesthetics and durability. The layout of the front panel controls is intuitive and user-friendly, providing easy access to volume adjustment and input selection.

In terms of connectivity options, the amplifier offers six RCA line inputs and one RCA line output, providing ample flexibility for connecting various audio sources. This versatility allows users to integrate multiple devices seamlessly into their audio setup.

Overall, when comparing performance, features, and price, the Copland CTA 405 amplifier stands out as an excellent value for money option. Its combination of robust power output, versatile connectivity options, and thoughtful design make it an attractive choice for audiophiles seeking high-quality sound reproduction without breaking the bank.

Whether you are a music enthusiast looking to upgrade your existing audio system or a discerning listener seeking an affordable yet powerful amplifier solution, the Copland CTA 405 offers exceptional value that is hard to beat in its price range.


In conclusion, the Copland CTA 405 amplifier is a true gem in the world of tube amplifiers. Its combination of classic design and modern technological advancements results in exceptional audio reproduction. With a frequency range reaching up to 100kHz and a minimum frequency of 5kHz, this stereo amplifier delivers a wide range of accurate and detailed sound.

The Copland CTA 405 features a built-in phono stage, voltage amplifier, power amplifier, and power supply. Special attention has been given to the power supply, which boasts a capacity of approximately 300W and high-quality output transformers.

The amplifier is housed in a stylish and sturdy chassis, with all necessary controls conveniently located on the front panel. The inclusion of a remote control adds convenience for users who prefer to operate the amplifier from a distance.

When it comes to sound characteristics, the Copland CTA 405 offers pristine audio quality with minimal distortion. The low feedback currents combined with an output power of 100W ensure clean and stable sound reproduction, allowing you to fully immerse yourself in your favorite music.

The sound performance of the Copland CTA 405 is truly remarkable. It delivers rich and detailed audio across all frequencies, with excellent clarity and separation. Whether you are listening to classical music or rocking out to your favorite rock band, this amplifier will impress you with its ability to faithfully reproduce every nuance of the music.

One of the major advantages of the Copland CTA 405 is its versatility. With six RCA inputs and one RCA output, it can accommodate various audio sources and easily integrate into any existing setup. The inclusion of a phono stage also makes it suitable for vinyl enthusiasts.

In terms of value for money, the Copland CTA 405 offers a premium audio experience that justifies its price tag. The combination of its high-end components, impeccable design, and exceptional sound performance make it a worthwhile investment for audiophiles who appreciate the finer details of music reproduction.

In conclusion, the Copland CTA 405 amplifier is a standout performer in its class. Its remarkable sound characteristics, versatile functionality, and elegant design make it a top choice for discerning audio enthusiasts. Whether you are a vinyl lover or a digital music aficionado, this amplifier will elevate your listening experience to new heights. If you are seeking a high-quality tube amplifier that delivers exceptional audio performance, the Copland CTA 405 is an excellent choice that won’t disappoint.

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