Krell Industries 222 manual Letter from Dan D’Agostino

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A Letter from Dan D’Agostino

Dear Audio Enthusiast,

Thank you for your purchase of the Krell Evolution 222 preamplifier.

The preamplifier plays a vital role in audio playback by mediating the line-level out- put of a wide variety of source components in preparation for the amplifier’s input. At no other point in the reproduction process is music so vulnerable to change, as the signal level is small, and susceptible to noise and distortion.

Having always valued the role of the preamplifier in fine audio systems, I take pre- amplifier design very seriously. I realize that, no matter how impressive an amplifi- er’s performance; it can be no better than that of the preamplifier driving it.

My new Evolution 222 preamplifier employs balanced Krell Current Mode gain stages from input to output, and Current Audio Signal Transmission (CAST) receivers and transmitters. Utilizing these powerful technologies, the Evolution 222 conveys the complete range of timbre and dynamics that comprise the foundation musical performance. Typical of my latest preamplifier designs, the Evolution 222 preamplifier includes a thoughtful suite of menu options, and can be customized for the greatest ease of operation.

I hope that you enjoy your new Evolution 222 preamplifier.

Sincerely,

Daniel D’Agostino

Chief Executive Officer

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Contents Evolution Important Safety Instructions Contents List of Illustrations Letter from Dan D’Agostino Features Evolution 222 Features and TechnologyHow Cast and Krell Current Mode Interact Voltage Signal Transmission Traditional Audio SystemRevolutionary Krell Cast Technology Cast BasicsBest Musical Performance Cast Cable ConstructionEvolution Cast Operation Definition of TermsInputs and Outputs Technology Krell Current ModePage AC Power Guidelines PlacementQuick Start Connecting the Evolution 222 to Your SystemOperating the Evolution Selectors Anatomy of the EvolutionFront Panel Description PowerChassis Remote Functions on the Front PanelPreamplifier Functions DisplayNavigate/Customize Level Control Knob or Level Keys Level ControlEvolution 222 Remote Control Battery Installation and Removal Remote Control DescriptionAmplifier Functions Balance FunctionsCompact Disc and DVD Functions Evolution 222 Back Panel Back Panel Description ConfigurationsInputs Outputs22 RS-232 Remote Connections on the Back Panel23 RC-5 24 12 VDC In/Out 12 V TriggerIEC Power Cord Receptacle Phono Stage ConnectorPhono Power Port Input and Output Connections Connecting the Evolution 222 to Your SystemXLR Pin Configuration Connection Steps To Turn Off The System Evolution 222 OperationOn/Off and Stand-by Operation Navigation Conventions Volume Knob or Level KeysCustomizing the Evolution AC Mains Menu FunctionsBalance input trim Balance channelMenu Button or Key Enter or exit the menu DisplayInfo Input Name Input Level TrimInput Trigger Input PhaseIR Out Control Evolution 222 responds to 12 V input trigger commandsMute Link Control can LinkOutput Trigger Recall RC-5 ControlSave RS-232 ControlTheater Mode Volume Display Troubleshooting System Noise Warranty Page To contact the Krell Service Department Return Authorization ProcedureInputs SpecificationsConnair Road

222 specifications

Krell Industries has long been synonymous with high-end audio performance, and the Krell Industries 222 is no exception to this reputation. Designed with both audiophiles and casual listeners in mind, the 222 exemplifies cutting-edge technology, engineering precision, and a commitment to delivering exceptional sound quality.

At the heart of the Krell 222 is its audiophile-grade DAC (Digital-to-Analog Converter) that supports high-resolution audio formats, including DSD and PCM. This enables the unit to accurately reproduce music data at various sampling rates, providing a dynamic range and clarity that brings recorded music to life. The incorporation of proprietary Krell technologies ensures that the 222 minimizes digital distortion while maximizing audio fidelity.

Additionally, the Krell 222 features a state-of-the-art power supply designed to provide stable and clean power to its circuitry. This ensures that the amplifier can handle a wide range of audio signals without compromising sound quality. The unit employs advanced linear power supply technology, which is known for its ability to deliver consistent voltage under various load conditions, resulting in improved performance across all audio frequencies.

The connectivity options on the Krell 222 are robust, featuring both balanced XLR and unbalanced RCA inputs that facilitate seamless integration into various audio systems. With support for Bluetooth and network streaming, users can enjoy their favorite music from a variety of digital sources, enhancing the versatility of the unit. The Krell 222 also features a user-friendly interface, allowing for easy navigation and control over audio settings.

In terms of design, the Krell 222 showcases a modern aesthetic with a durable chassis that minimizes vibration and interference. The front panel is clean and intuitive, featuring a high-resolution display that provides real-time feedback on settings and parameters.

Notably, the Krell 222 embraces green technology, employing energy-efficient components that reduce power consumption without sacrificing performance. This commitment to sustainability reflects Krell's dedication to creating products that are both innovative and environmentally responsible.

In summary, Krell Industries 222 stands out with its advanced DAC, exceptional power supply, versatile connectivity options, and elegant design. It represents the pinnacle of what high-end audio can offer, making it an ideal choice for those who demand only the best in sound reproduction. With the Krell 222, users can experience music as it was meant to be heard, with clarity and depth that elevates the listening experience to new heights.
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