19
Input #2 - MSB PRO I2S
The MSB PRO I2S is new and will offer amazing performance on new transports as they are brought to market. (See the table) It is lower
jitter and higher speed (ready for 768 kHz music) than the MSB Network. It contains 20 channels of audio of 768 kHz, 32 bit audio in
the I2S format, as well as a an outgoing clock and control data. These can be used to send multichannel data as would be required with
digital crossovers, distribute independent super precision clocks and do auto setup of DAC parameters. Future upgrades and products
will allow MSB products to take full advantage of these new capabilities. There is an PRO I2S output on our Studio 384 kHz, 32 bit ADC
and this output will become the standard output on all new flagship MSB transports. So this input works with:
• MSB Pro Analog-to-digital Converter
• Signature Data CD
• Universal Media Transport PLUS and Signature Universal Media Transport, and all new products to come
The MSB PRO Input board upgrade not only gives you the improved MSB Network input you can use today, but also gives you a PRO
I2S input that will be available for new MSB products in the future. The PRO upgrade can easily be configured for either type input.
Operation
These new inputs are added to the existing input LIST on the DAC and are selected just like the standard inputs. Please note that the MSB
Network and the PRO I2S are independent. Network sources will only work with Network inputs, and PRO I2S sources will only work
with PRO I2S inputs. So for today, the PRO board is configured for use with the MSB Network. As PRO I2S sources are developed by
MSB, you will have an input to make use of them.
Installation
The Pro Input board plugs right in the input upgrade slot in the DAC IV. The Network connector installs in one of the AUX input holes.
Unfortunately it is too big to fit in the older Diamond DAC IV without modifying the large heat sink. This job will need to be done by
your dealer or by MSB.
Quality Check
Each Platinum is comprehensively tested
and the actual outputs measured. Just
a few comments on the example plot
shown. The single spike is the test tone
played at -60 db. A properly working
DAC will produce a peak at -60. Most
measurement systems cannot measure
as low a level as -145 db. That is the
noise floor of our production test system
which means the Platinum may measure
better, but we cannot see it. The rise at
low frequencies is always present on our
test setup and the right channel always
shows a little more noise than the left
(the right cable runs closer to the digital
input cable).
Using the DAC IV to test your
source
The DAC IV is unique in that gives you a precise read out of both the sample frequency and bit depth of the incoming signal as well as
performing a test for bit perfect playback. If you are playing a CD, a copy of a CD or a ripped CD file on your computer the display should
read 44.1 kHz, 16 bit. Any other output means you are not reading the file bit-perfect and your sound quality will be compromised. This
corruption could be accidental. You may have ripped a CD with a program that does a conversion. This is very bad and you should not
do this. You may have an upsampling transport or have upsampled with software upsampling in your computer. This is also very bad.
Nobody can do as well as we can if we are given the bit perfect original. Turn off the feature and give us the real thing. You will not be
disappointed. For more detailed testing of your source, please refer to the BIT PERFECT SOURCE TESTING section of this manual.
MSB provides test files that the DAC is programmed to recognize and check for bit perfect playback.
Summary of Contents for DAC IV plus
Page 14: ...14...
