Krell Industries 505 Using the Filter Button or Key, Conventional Compact Disc Format Filters

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(SECTION FIVE: Evolution 505 Operation continued)

Using the Filter Button or Key (17)

Four filters make subtle changes to the high frequencies at ultrasonic levels, alter- ing the sonic presentation from your loudspeakers. Once a filter setting has been selected, it is held in memory even if the Evolution 505 is turned off and then returned to operational status.

Filter 1, 2, 3, and 4 are available in any SACD format. Only Filters 1 and 2 are available in the conventional CD format. All filters have a different output gain, higher bandwidth, and a more gradual rolloff in the SACD format, compared to Filter 1 and 2 in the CD format.

Filter 1 and 2 are designed to eliminate aliasing artifacts that are the result of the D/A re-construction process.

Conventional Compact Disc Format Filters

Filter 1 operates flat from 20 Hz to 20 kHz, with a very steep roll-off characteristic above 20 kHz (21.5 kHz, -3 dB).

Filter 2 operates up to 20 kHz (-3 dB) with a more gradual roll-off characteristic when compared to Filter 1.

SACD Format Filters

Filter 1 in the SACD format, has the same relative output gain as Filter 1 and 2 in the CD format, and it has the highest bandwidth of the four SACD filters. Filters 2, 3 and 4 in the SACD format, operate at reduced bandwidth with steeper slope fil- tering and different output gain.

Filter 1 operates up to 180 kHz (highest bandwidth) and has the slowest roll-off characteristic with no change in output gain.

Filter 2 operates up to 75 kHz and has the steepest roll-off characteristic. It has a +0.5 dB increase in output gain over the entire audio pass band compared to Filter 1.

Filter 3 operates up to 80 kHz and has the 2nd steepest roll-off characteristic. It has a +5.5 dB increase in output gain over the entire audio pass band compared to Filter 1.

Filter 4 operates up to 90 kHz and has the 3rd steepest roll-off characteristic. It has a +3.5 dB increase in output gain over the entire audio pass band compared to Filter 1.

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Contents Evolution Important Safety Instructions Contents List of Illustrations and Tables Letter from Dan D’Agostino Dear Audio EnthusiastEvolution 505 Features and Technology FeaturesRevolutionary Krell Cast Technology Voltage Signal Transmission Traditional Audio SystemHow Cast and Krell Current Mode Interact Cast BasicsBest Musical Performance Cast Cable ConstructionEvolution Cast Operation Definition of TermsInputs and Outputs Sacd Disc Krell Current ModeTechnology Sacd Disc Hybrid Disc TypeTo Remove the Evolution 505 from the Shipping Carton Unpacking and PlacementOpening the Evolution 505 Shipping Carton Placement AC Power GuidelinesAnatomy of the Evolution This section describes the Evolution 505 functionsRemote Functions on the Front Panel PowerFront Panel Description Transport FunctionsMenu Button or Key To set up a programDirect Track Access Buttons or Keys Enter Button or KeyDim Button or Key DisplayFront Panel Display Display Button or KeyEvolution 505 Remote Control Remote Control Description Battery Installation and RemovalEvolution 505 Back Panel Digital Audio Outputs CD format only Back Panel DescriptionAnalog Audio Outputs Remote Connections on the Back Panel Connecting the Evolution 505 to Your System Using Balanced ConnectionsConnection Steps Evolution 505 Operation Power OnHow to Play a Disc Using the Title Button or Key Navigating a Data DiscSacd Format Filters Using the Filter Button or KeyConventional Compact Disc Format Filters Using the Front Panel Display Using the Repeat KeyUsing the Repeat A/B Key Using the 12 V TriggerWarranty Page Return Authorization Procedure To contact the Krell Service DepartmentSpecifications THDWNER’S Reference Krell INDUSTRIES, INC

505 specifications

Krell Industries has long been synonymous with high-end audio engineering, and the Krell 505 is a testament to its commitment to quality and performance. Designed for discerning audiophiles, the 505 exemplifies Krell's philosophy of delivering pure, uncolored sound. This model stands out as an advanced digital-to-analog converter (DAC) that caters to modern listening habits while retaining traditional audio values.

At its core, the Krell 505 features advanced digital signal processing and a high-performance DAC architecture, which ensures that every note is reproduced with incredible accuracy. One of the standout features of the 505 is its use of multiple premium DAC chips, allowing for precise voltage output and an expansive soundstage. This enables listeners to experience music as the artist intended, with detail and clarity across all frequencies.

The 505 supports a wide range of digital formats, including standard PCM up to 32-bit/384kHz and DSD up to DSD128, making it compatible with various audio sources. With such versatility, users can enjoy high-resolution audio from streaming services, home computers, and vinyl or CD players through its robust digital inputs. The Krell 505 is equipped with USB, coaxial, and optical inputs, ensuring seamless connectivity with a multitude of devices.

Another defining characteristic of the Krell 505 is its analogue and digital filtering options. Users can choose between different filter settings to tailor the sound to their preferences, whether they seek a warmer tonal quality or a more neutral presentation. This level of customization is ideal for audiophiles who appreciate tonal nuances in different recordings.

The build quality of the Krell 505 reinforces its premium status. The chassis is constructed from high-grade materials, providing not only aesthetic appeal but also effective vibration dampening. The user interface is intuitive, featuring a clear display and logical navigation, making operation simple even for those new to high-end audio equipment.

In summary, the Krell 505 encapsulates luxury and performance, catering to both conventional audiophiles and modern digital media consumers. With its advanced DAC technology, extensive file format support, and customizable sound options, it stands as a cornerstone of modern listening experiences, reinforcing Krell Industries' legacy as a leader in high-performance audio.
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