Revolutionary Krell CAST and CAST II Technology
Current Audio Signal Transmission, termed CAST, is a revolutionary method of connecting analog audio components for unparalleled sonic performance. CAST circuitry, and the CAST circuitry update, Krell CAST II, combine innovative engineering with existing Krell Cur- rent Mode technology to create entire CAST systems that reproduce music with incredible range, tonality, and precision.
Voltage Signal Transmission and the Traditional Audio System
Traditionally, signal is transmitted in the voltage domain between two components. In an audio system, each component is a discrete entity with unique characteristics that act upon the musical signal independently. Each component is unaware of the other components in the system. The cables that connect the components each have their own electrical characteristics, which affect the sonic presentation of the entire sys- tem.
CAST: A New Approach
CAST circuitry recognizes signal transmitted in the current domain instead of the voltage domain between each component. CAST transmission unifies the individual components and their interconnects into an electrically linked whole. The sonic presentation of the entire system remains intact.
CAST Basics
Here’s how a CAST audio system works. Inter- nally, each CAST source transfers, or amplifies, current using Krell Current Mode circuitry. This current signal is then output using CAST cir- cuitry. When the signal is received by a CAST input, Krell Current Mode circuitry again takes over until the signal reaches the loudspeaker. By maintaining the musical signal in the current domain from beginning to end, an entire CAST system behaves as if it is one component. With
CAST, anomalies of signal transmission between components are eliminated. Cable impedances and their effects on the transmitted signal are
How CAST and Krell Current Mode Interact
While CAST is a new method of transferring the musical signal between components, its origin stems from Krell Current Mode, the technology developed to transfer the musical signal within a component. CAST combined with Krell Cur- rent Mode takes circuitry signal transmission to the next evolutionary level. In essence, Krell Current Mode maintains the integrity of the sig- nal within the component and CAST preserves the transmitted signal between components. Together, CAST and Krell Current Mode tech- nologies unify separate Krell components into a single global circuit.
CAST Cable Construction
A CAST system uses cables manufactured by Krell and other manufacturers specially licensed by Krell. Thin and flexible CAST cables are constructed with the same build quality as other Krell products and are aesthet- ically matched to the components that Krell manufactures. An
The Best Musical Performance
When you operate a CAST system, you will hear significant improvements in every perfor- mance area: speed, precision, dynamic range, depth and width of the sound stage, transient impact, tonal balance, harmonic distortion, and more. The goal for CAST is the same company goal used for all Krell products. Krell strives for the delivery of the best performance of a musi- cal event for you, using the full expression of technology to date.
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