8.4 channels of audio output features two center channel outputs and four subwoofer outputs for maximum flexibility in system design.
Two digital signal processors (DSPs), the Crystal CS49623 and the CS49302 are employed to perform all surround mode processing.
Supports Dolby Digital Surround EX, Dolby Digital 5.1, DTS 6.1 ES, DTS 5.1, DTS NEO:6, Dolby Pro Logic II processing as well as Dolby TrueHD and DTS HD Master Audio lossless surround formats, plus nine proprietary Krell Music Surround modes
12 output stages are fully balanced and feature Krell Current Mode topology with 1.5 MHz of bandwidth for accurate reproduction of the today demanding movie soundtracks. Current audio signal transfer (CAST) outputs are supported for all 12 channels.
The Evolution 707 delivers unparalleled music and cinema soundtrack reproduction through the use of a full complement of advanced Krell technologies, including: Krell Current Mode, Evolution CAST, Class A, Evolution CAST and balanced out puts, user-configurable input assignment and system macros, main and remote zone control capability, and broadcast-quality video circuitry.
Digital processing circuitry runs in double precision mode at a word length of 48-bits for the most precise division of frequencies and optimization of the system's speaker/subwoofer combination. 12 output stages are fully balanced and feature Krell Current Mode topology with 1.5 MHz of bandwidth for accurate reproduction of the today demanding movie soundtracks. Current audio signal transfer (CAST) outputs are supported for all 12 channels. Evolution CAST, which stands for current audio signal transmission, is a proprietary method of sending the audio signal between components in the current domain, from a high impedance transmitter to a low impedance receiver. Krell components connected in Evolution CAST act together as an electrically unified whole, free from the deleterious effects normally imposed by the connecting cables.
Preamp mode bypasses all digital circuitry and routes the analog input, stereo or 7.1 multi-channel, directly to the volume control for the purest path possible. Separate power supplies for digital and analog circuit paths are linear design and feature custom made, low-noise transformers and robust regulation All-discrete video circuitry bandwidth is greater than 350 MHz and provides pristine pass-through of all progressive and wideband high definition signals including HDMI. Inputs and outputs for composite, S-Video, component, and HDMI are supported. On Screen Display set-up and status are available on all video outputs, all of the time, including upconversion to component and HDMI progressive outputs. Any SD or HD video standard may be converted up to 1920 x 1080p 60 Hz.
