Krell Industries Evolution manual

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If the product is serviced by a distributor who did not import the unit, there may be a charge for service, even if the product is within the warranty period.

Freight to the factory is your responsibility. Return freight within the United States (U.S.A.) is included in the warranty. If you have purchased your Krell product out- side the U.S.A. and wish to have it serviced at the factory, all freight and associated charges to the factory are your responsibility. Krell will pay return freight to the U.S.A.-based freight forwarder of your choice. Freight and other charges to ship the product from the freight forwarder to you are also your responsibility.

Krell is not responsible for any damage incurred in transit. Krell will file claims for damages as necessary for a product damaged in transit to the factory. You are responsible for filing claims for shipping damages during the return shipment.

Krell does not supply replacement parts and/or products to the owner of the prod- uct. Replacement parts and/or products will be furnished only to the distributor performing service on this product on an exchange basis only; any parts and/or products returned to Krell for exchange become the property of Krell.

No expressed or implied warranty is made for any Krell product damaged by acci- dent, abuse, misuse, natural or personal disaster, or unauthorized modification.

Any unauthorized voltage conversion, disassembly, component replacement, perforation of chassis, updates, or modifications performed to the product will void the warranty.

The operating voltage of the product is determined by the factory and can only be changed by an authorized Krell distributor or at the factory. The voltage for this product in the U.S.A. cannot be changed until six months from the original pur- chase date.

In the event that Krell receives a product for warranty service that has been modi- fied in any way without Krell authorization, all warranties on that product will be void. The product will be returned to original factory layout specifications at the owner’s expense before it is repaired. All repairs required after the product has been returned to original factory specifications will be charged to the customer, at current parts and labor rates.

All operational features, functions, and specifications and policies are subject to change without notification.

To register your product for warranty benefits, please complete and return the

Warranty Registration Card enclosed in the shipping box within 15 days of pur-

chase. Thank you.

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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 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 ResponseMeasurement Evolution 403 Amplifier Measurement Evolution 600 Amplifier Evolution 900 Amplifier WNER’S Reference Krell INDUSTRIES, INC

Evolution specifications

Krell Industries has established itself as a pioneer in high-performance audio equipment, renowned for delivering unparalleled sound quality and innovative technologies. Founded in 1980, the company quickly became synonymous with premium amplification, earning accolades from audiophiles worldwide. Over the years, Krell has evolved its product lineup to include not only amplifiers but also preamplifiers, digital audio players, and complete home theater systems.

One of the hallmark features of Krell products is their robust build quality. The company employs a strong engineering ethos that prioritizes durability and reliability in all its offerings. The iconic, heavy chassis of Krell components serves not only as a protective shell but also minimizes vibrations, which can adversely affect sound quality. This engineering strategy is evident in their signature line of amplifiers, which utilize high-grade materials and precision craftsmanship to ensure longevity and optimum performance.

Krell has also been at the forefront of technological advancements. The introduction of class A amplification circuitry is one such innovation that has been integral to the company's sound signature, allowing for minimal distortion and a rich, dynamic range. This technology ensures that even the most subtle nuances in music are reproduced with fidelity and clarity.

Moreover, Krell has embraced digital audio, creating DACs (digital-to-analog converters) and streaming devices that support high-resolution audio formats. This commitment to digital excellence reflects the company's understanding of evolving consumer preferences. Many of their devices feature wireless connectivity options, allowing users to stream music seamlessly from various sources without sacrificing audio quality.

In addition, Krell emphasizes user-friendly interfaces and versatility in its designs. Customers can often find features such as programmable presets, remote control functionality, and intuitive navigation systems, making it easier to tailor their listening experience.

Krell Industries’ evolution over the years showcases a dedication to audio fidelity, technological advancement, and stylish design. As the company continues to innovate within the high-end audio landscape, it maintains its reputation as a brand that audiophiles can trust, delivering exceptional sound experiences that stand the test of time.