Letter from Dan D’Agostino | Evolution Technologies 222 manual

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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Evolution Technologies 222 manual Letter from Dan D’Agostino

Contents

Evolution Important Safety Instructions Contents List of Illustrations Letter from Dan D’Agostino Features Evolution 222 Features and Technology How Cast and Krell Current Mode Interact Voltage Signal Transmission Traditional Audio SystemRevolutionary Krell Cast Technology Cast Basics Best Musical Performance Cast Cable ConstructionEvolution Cast Operation Definition of TermsInputs and Outputs Technology Krell Current ModePage AC Power Guidelines Placement Quick Start Connecting the Evolution 222 to Your System Operating the Evolution Selectors Anatomy of the Evolution Front Panel Description PowerChassis Remote Functions on the Front Panel Preamplifier Functions DisplayNavigate/Customize Level Control Knob or Level Keys Level Control Evolution 222 Remote Control Battery Installation and Removal Remote Control DescriptionAmplifier Functions Balance Functions Compact Disc and DVD Functions Evolution 222 Back Panel Back Panel Description ConfigurationsInputs Outputs 22 RS-232 Remote Connections on the Back Panel23 RC-5 24 12 VDC In/Out 12 V Trigger IEC 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 Functions Balance input trim Balance channel Menu Button or Key Enter or exit the menu Display Info Input Name Input Level Trim Input Trigger Input Phase IR Out Control Evolution 222 responds to 12 V input trigger commands Mute Link Control can Link Output Trigger Recall RC-5 Control Save RS-232 Control Theater Mode Volume Display Troubleshooting System Noise Warranty Page To contact the Krell Service Department Return Authorization Procedure Inputs Specifications Connair Road