Krell Industries EVOLUTION TWO MONAURAL PREAMPLIFIER manual Remote Connections on the Back Panel

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(SECTION FOUR: Anatomy of an Evolution Two continued)

(Outputs continued)

37, 38 Record Bus Outputs

The Evolution Two is equipped with one balanced record bus output with XLR connectors and one single-ended record bus output with RCA connectors. Use the record bus outputs to record a input signal other than the signal playing on the main outputs. For more information, see Play and Record, on page 30.

39, 40 Main Outputs

The Evolution Two is equipped with one balanced output with XLR connectors and one single-ended output with RCA connectors.

41CAST Outputs

The Evolution Two is equipped with two CAST preamplifier outputs with 4-pin bayonet connectors, for use with Krell CAST-equipped amplifiers.

Remote Connections on the Back Panel

42RC-5 In

Each Evolution Two preamplifier chassis (1) has an RC-5 remote input. The RC-5 remote connector is used with a third party remote control system that provides RC-5 (IR) data with the carrier intact, via a wired connection. A stereo tip, ring, sleeve 1/8” mini connector is used in the following configuration: Tip = RC-5 data, Ring = +5 V, Sleeve = GND.

43RS-232

Each Evolution Two preamplifier chassis (1) has an RS-232 port that receives messages from a computer-based control system, providing integrated control of all preamplifier functions. The RS-232 input uses a 9-pin D-subminiature connector. See the Evolution Two developer's reference, entitled RS-232 Port: Sending Commands and Interpreting Data, for more information.

4412 VDC In/Out (12 V Trigger)

Each Evolution Two preamplifier chassis (1) has 2 outputs that send and one input that receives 12 VDC power on/off (12 V trigger) signals to and from other Krell components and other devices that incorporate a 12 V trigger. This allows you to turn other components on or off, or to and from stand-by, through the remote control. When the Evolution Two is switched to operational mode and is connected to other components through the 12 V trigger, it sends a signal that will switch other components, allowing whole systems or parts of

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Contents Evolution Page Contents List of Illustrations Letter from Dan D’Agostino Letter from Dan D’Agostino About Krell Krell LegacyVoltage Signal Transmission Traditional Audio System How Cast and Krell Current Mode InteractRevolutionary Krell Cast Technology Cast BasicsEvolution Cast Cast Cable ConstructionBest Musical Performance Ensuring Maximum Performance Zero Feedback Balanced Current Mode DesignCore Technologies Fully Balanced Discrete Volume Control Separate Power SupplyAdvanced Microprocessor Control Custom Software Definition of Terms ConfigurationsInputs and Outputs Krell Current Mode PreamplifierOperation TechnologyUnpacking and Placement Opening the Evolution Two Shipping CartonLeft/Right Channel Orientation To Remove the Preamplifier Channel from the Shipping CartonAC Power Guidelines PlacementRepeat Steps 1-5 for the remaining preamplifier channels Connecting the Evolution Two to Your System Quick StartOperating the Evolution Two Linked Mode Anatomy of an Evolution Two 11 12 13Evolution Two Remote Control Power Front Panel DescriptionChassis Remote Functions on the Front PanelPreamplifier Functions DisplayLevel Control Navigate/CustomizeMenu Button or Key Enter Button or KeyRemote Control Description Battery Installation and RemovalCompact Disc Functions Amplifier FunctionsIEC Power Cord Receptacle Back Panel Description InputsOutputs 35, 36 Main Bus OutputsRemote Connections on the Back Panel 37, 38 Record Bus Outputs42 RC-5 43 RS-232Phono Stage Connector Link ControlConnecting the Evolution Two to Your System XLR Pin ConfigurationInput and Output Connections Connection StepsNever connect two power supplies together Connections Using can Link To Connect Multiple Evolution Two Preamplifiers via can LinkOn/Off and Stand-by Operation Linked Mode Evolution Two OperationPlay and Record To Turn Off Your SystemOperation Using can Link Customizing the Evolution Two Navigation ConventionsMenu Functions AC MainsBacklight Enter the menu, thenChannel Assign BalanceUse to make a left channel respond as a right channel Clone Use to make a right channel respond as a left channelDisplay Front panel display is always on InfoFront panel display times out after 5 seconds Input Name Input Level TrimTo select input names for other inputs, repeat Steps 3 Input Phase Phase of the selected input is unaffectedPhase of the selected input is inverted 180 degrees Input TriggerEvolution Two responds to 12 V input trigger commands IR Out ControlLink Control can Link Output Trigger MuteOutput of the Evolution Two is completely silenced RC-5 Control Recall Recalls the factory settingsRS-232 Control Save Software CloneBegins the software clone process Tape InputInitiates the software clone Theater Mode Volume Display +12 dB. The options are Enter the menu, thenQuestions and Answers Troubleshooting System Noise Appendix can Link and Multiple Evolution Two Preamplifiers Connection of multiple preamplifier channelsAppendix can Link and Multiple Evolution Two Preamplifiers Warranty Warranty Return Authorization Procedure To contact the Krell Service DepartmentService@krellonline.com AM to 500 PM ESTSpecifications Control outputs

EVOLUTION TWO MONAURAL PREAMPLIFIER specifications

Krell Industries has long been a name synonymous with high-fidelity audio equipment, and their EVOLUTION TWO MONAURAL PREAMPLIFIER is a testament to this legacy. This premium preamp is designed to cater to audiophiles, delivering unparalleled sound quality and meticulous attention to detail.

At the heart of the EVOLUTION TWO lies Krell's commitment to superior audio performance. The preamplifier employs a fully balanced, differential signal path that minimizes noise and distortion, ensuring that the audio output is pure and true to the source. This architecture not only enhances sound quality but also integrates seamlessly with other high-end audio components in any setup.

One of the standout features of the EVOLUTION TWO is its advanced power supply design. Krell employs a toroidal transformer coupled with high-energy storage capacitors to provide stable, clean power. This allows for improved dynamics and transient response, helping to reproduce the complex nuances of music in a way that engages the listener. The preamplifier's power supply is designed to operate with extreme efficiency, ensuring consistent performance even during the most demanding listening sessions.

Additionally, the EVOLUTION TWO comes equipped with Krell's proprietary CAST (Current Audio Signal Transmission) technology. This innovative feature allows for a direct, impedance-matched connection between components, significantly reducing signal degradation over long cable runs. Audiophiles will appreciate the clarity and fidelity produced by CAST, revealing subtle textures and details in their favorite recordings.

The preamplifier also includes a range of inputs and outputs, catering to various audio sources and systems. Users can connect multiple devices, including digital sources, with ease, thanks to the EVOLUTION TWO's advanced input switching capabilities. The unit supports balanced XLR connections as well as unbalanced RCA outputs, providing flexibility for users with different equipment configurations.

Moreover, the EVOLUTION TWO MONAURAL PREAMPLIFIER boasts a stunning aesthetic, showcasing Krell's hallmark design philosophy. With its sleek chassis and elegant finish, the preamp not only sounds good but looks great in any audio setup.

In summary, the Krell Industries EVOLUTION TWO MONAURAL PREAMPLIFIER is a high-performance audio component that encapsulates cutting-edge technology and exceptional craftsmanship. With its balanced signal path, innovative power supply design, CAST technology, and versatile connectivity options, it is a remarkable addition to any serious audiophile's system, promising a listening experience that truly transcends the ordinary.
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