soulution
nature of sound
Seite 6
1
11
1Highlights
HighlightsHighlights
Highlights
1.1
1.11.1
1.1 Layout
LayoutLayout
Layout
The power supply units, as well as the digital circuits are strictly separated rom the
analog sections. The analog output section is realized in dual mono layout.
1.2
1.21.2
1.2 DSP (Digital Signal Processor)
DSP (Digital Signal Processor)DSP (Digital Signal Processor)
DSP (Digital Signal Processor)
A power ul DSP per orms the calculations or the upsampling to 24Bit, 384kHz.
The DSD data o a SACD is converted into PCM ormat during the upsampling pro-
cess. The converted data is extrapolated by a 3
rd
order polynomial algorithm. Addi-
tionally this DSP per orms computations or the volume control and the balance set-
tings. Thanks to the 32Bit loating comma architecture o the DSP these calcula-
tions go without the usually increase o the quanti ication noise.
1.3
1.31.3
1.3 Digital/Analog
Digital/AnalogDigital/Analog
Digital/Analog-
--
-Converter
ConverterConverter
Converter
The D/A converter section as well as the analog output stages are done in dual mono
layout, one board per audio channel (le t/right). We use the Burr-Brown 1792 DAC
which guarantees excellent per ormance. Only the top quality converter section
which runs up to 384 kHz o the chip is used. The internal upsampling section is
bypassed! Two extremely ast (3MHz) I-V converters per DAC trans orm the output
currents o the DAC chips in voltages be ore they get iltered in the ollowing stage.
This ensures optimal conditions in the ilter stage as well as or the I-V converters.
1.4
1.41.4
1.4
The soulution 560 D/A-Converter incorporates the unique and innovative, DSP
based Zero-Phase-Technology. Every digital to analog converter requires an analog
low pass ilter in its output in order to suppress high requency noise and aliasing
signals, which adds phase shi ts or higher requencies. Despite its relatively high
cut-o requency o 120kHz, the analog 3
rd
order Bessel- ilter o the 560 shows a
phase shi t o up to 15° in the audio band. A power ul DSP does pre-correct these
