Krell Industries CD Player - Manual (Page 7)

Definition of Terms, continued
Krell SACD Standard 3
SACD stands for Super Audio Compact Disc, an audio disc that pro-
vides exceptional high quality sound. Based on the new Direct
Stream Digital (DSD) technology, a format that comprises a 1-bit sys-
tem, a SACD has a sampling frequency 64 times higher than that of
a conventional audio compact disc. With a frequency response of
over 50 kHz and a dynamic range of 120 dB over the entire audible
spectrum the results are spectacular: There is no better audio disc
reproduction.
You will recognize a SACD by the super audio compact disc logo.
There are three SACD disc types:
1 A single layer disc consists of one high density (HD) layer.
2 A dual layer disc consists of two HD layers, and can store
twice as much information as a single layer disc.
3 A hybrid disc consists of one standard compact disc layer
with conventional two-channel audio compact disc informa-
tion, and one HD layer.
Each SACD disc type may contain two areas of recorded informa-
tion: a high-quality two-channel area and a high-quality multi-channel
area. Recorded information may vary per area. Refer to the disc inlay
for more information.
The hybrid SACD disc type has the most versatile disc playback
options, with two areas of recorded information for SACD playback
as well as backward compatibility with existing standard compact
disc and DVD players via the standard compact disc layer.
On a hybrid SACD disc, the two layers are read from the same side
of the disc. The HD layer is read by a DVD laser. The reflective con-
ventional compact disc layer is read by the compact disc laser
through the second, semi-transmissive HD layer.
SACD Disc: Hybrid
Disc Type
SACD DISC
Krell Current Mode
A proprietary Krell circuit topology in which the audio gain stages of a
component operate in the current rather than the voltage domain.
This unique technology provides the component with exceptional
speed and a wide bandwidth. TECHNOLOGY