Krell Industries 900, Evolution 600, 400 manual Warranty

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Warranty

Krell products have a limited warranty. Amplifiers, preamplifiers, preamp/processors, and receivers carry a limited warranty of five years for parts and labor on circuitry. Loudspeakers carry a limited warranty of five years for parts and labor. CD and DVD players carry a limited warranty of five years for parts and labor on circuitry, and three years for parts and labor on mechanical parts.

Should the product fail to perform at any time during the warranty, Krell will repair it at no cost to the owner, except as set forth in this warranty.

This warranty does not apply to damage caused by acts of God or nature.

This warranty shall be in lieu of any other warranty, expressed or implied, including, but not limited to, any implied warranty of merchantability or fitness for a particular purpose. There are no warranties which exceed beyond those described in this document, if the product does not perform as warranted herein, the owner’s sole remedy shall be repair. In no event will Krell be liable for incidental or consequential damages arising from purchase, use, or inability to use the product, even if Krell has been advised of the possibility of such damages.

IMPORTANT

The single-ended inputs on the Evolution amplifiers are cap-coupled. Use these

inputs whenever you are connecting a tube preamplifier.

Proof of purchase in the form of a bill of sale or receipted invoice substantiating that the product is within the warranty period must be presented to obtain warranty service. The warranty begins on the date of the original retail purchase, as noted on the bill of sale or receipted invoice from an authorized Krell dealer or distributor. Previously owned equipment, when re-purchased from an authorized Krell dealer or distributor, has the balance of the original warranty, based on the original date of manufacture. Krell dealers and distributors are not authorized to sell current prod- ucts on the Internet. Current products purchased via the Internet do not have any transferrable warranty.

The warranty for a Krell product is valid only in the country to which it was originally shipped, through the authorized Krell distributor for that country, and at the factory. There may be restrictions on or changes to the Krell warranty because of regula- tions within a specific country. Please check with your distributor for a complete understanding of the warranty in your country.

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Contents Evolution Important Safety Instructions Contents List of Illustrations Letter from Dan D’Agostino Evolution Amplifier Features and Technology FeaturesVoltage Signal Transmission Traditional Audio System How Cast and Krell Current Mode InteractRevolutionary Krell Cast Technology Cast BasicsEvolution Cast Cast Cable ConstructionBest Musical Performance Inputs and Outputs Definition of TermsOperation Technology Krell Current ModeActive Cascode Topology Unpacking and Placement Opening the Evolution Amplifier Shipping CartonPlacement AC Power GuidelinesAnatomy of an Evolution Amplifier Evolution Amplifier Front Panel Evolution 402 shownPower Power ButtonPower Status Indicator Front Panel DescriptionEvolution 302 Stereo Amplifier Back Panel Evolution 402 Stereo Amplifier Back Panel Evolution 403 Multi-channel Amplifier Back Panel Evolution 400 Monaural Amplifier Back Panel Evolution Monaural Amplifier Back Panel Evolution 600 shown Outputs Back Panel DescriptionInputs IEC Power Cord Receptacle Power Breaker SwitchRemote Connections VDC In/Out 12 V TriggerConnecting an Evolution Amplifier to Your System XLR Pin ConfigurationCast Connections Balanced ConnectionsEvolution DC Protection Circuitry/Using Tube Preamplifiers Connection StepsSection Five Troubleshooting System Noise How to Evaluate Amplifier OperationError Codes Diagnostic Code Possible Condition Course of ActionQuestions and Answers Warranty Page Return Authorization Procedure How to Expedite ServiceTo contact the Krell Service Department How to Return a ProductSpecifications Frequency ResponseRms at 4 Ohms Hz to 20 kHz +0, -0.18 dB Hz to 120 kHz +0, -3 dB WNER’S Reference Krell INDUSTRIES, INC

400, 900, Evolution 600 specifications

Krell Industries is a renowned namesake in the high-end audio and home theater equipment market, revered for its cutting-edge engineering and exceptional performance. Among its standout offerings are the Krell 900, Evolution 600, and Evolution 400, each designed for audiophiles seeking to elevate their listening experience.

The Krell 900 is a powerhouse amplifier that marries high-output power with a sophisticated design. Featuring Class A/B amplification, it operates with minimal distortion, ensuring that sound quality remains pure even at high volume levels. The unit boasts a massive power supply that allows it to handle a wide variety of speaker impedances effortlessly. With its robust build and a sleek, minimalist aesthetic, the Krell 900 is not only a technical marvel but also a visual centerpiece in any audio setup.

On the other hand, the Evolution 600 represents Krell’s commitment to harnessing the latest technology to achieve superior sound. This amplifier utilizes Krell’s proprietary current mode topology, which optimizes power delivery and offers instantaneous response to dynamic audio signals. The Evolution 600 is equipped with advanced thermal management systems that keep the unit cool during extended use, ensuring reliability and longevity. Furthermore, the elegant design complements any home decor, making it a stylish and functional addition to high-end audio environments.

The Evolution 400, while slightly smaller, exemplifies Krell’s hallmark of uncompromising sound quality. It integrates many of the same high-end technologies found in its larger counterparts but in a more compact form. With a focus on delivering dynamic range and clarity, the Evolution 400 is ideal for both music and home theater applications. Advanced digital signal processing, combined with analog audio circuitry, ensures that every note and detail is captured with impeccable accuracy.

All three models prioritize connectivity and user experience, featuring a range of inputs, including balanced XLR and unbalanced RCA options, allowing seamless integration into various audio systems. Each amplifier emphasizes robust build quality, featuring heavy-duty chassis and meticulously designed circuit layouts to minimize interference and signal degradation.

In conclusion, Krell Industries’ 900, Evolution 600, and Evolution 400 amplifiers exemplify the pinnacle of audio craftsmanship. They combine innovative technologies, premium components, and stunning aesthetics, making them the perfect choice for discerning audio enthusiasts who demand nothing but the best in sound reproduction.