Specifications

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Clock Feature (advanced users only) – On the back of the unit is a special 5 pin XLR type connector. It is a clock interface that allows
multiple Power DAC products to be synchronized, allows the Power DAC Clock to be output and allows an external clock to be input
to the Power DAC. See Clock Interface.
The MSB Network
One of the most powerful feature of the Power DAC is the MSB network. The MSB network has the following capability:
• Unidirectional communications over any twisted pair
• Simultaneous transmission of 8 audio channels with 32 bit resolution at 192 kHz sampling rate
• Simultaneous transmission of 8 data channels with 3 Mbs data rate (for volume and trim data)
• A single serial channel of 384 kbits/sec for control and system data.
This network is our answer to 192 kHz audio transmission and multichannel transmission in the same package. We provide network
outputs to our own transport and offer a source upgrade to your transport as well. In our surround processor upgrade, up to 8 channels of
decoded data can be sent through one wire to separate DACs. The twisted pair format is very convenient as it has become the standard
for all computer networks. Ethernet networks use CAT5 wire which contains 4 twisted pairs. This one cable could be used to send 32
channels of 32 bit, 192 kHz audio data! Several cables are available for connecting MSB transports to the Power DAC including CAT5
cable at any length up to 80 feet.
Analog Outputs
Balanced – The balanced audio outputs are the preferred output format for those customers with a balanced system. The balanced outputs
provide a 20 Vpp at 0 dB (7.5 V RMS).
Coaxial – The output impedance is 50 ohms and output level is 10 Volts PP (3.6 V RMS).
Power Supplies
Each function within the Power DAC is provided with its own separate power supply. There are 5 power supplies in the digital portion
and 7 in the analog. The power supplies in the digital section ensure the maximum jitter reduction while the 3 power supplies for each
of the left and right DACs allow for the greatest channel separation possible.
The Power DAC can be used with the MSB P1000 Power Base, with its high performance triple wound toroidal transformer and rectication.
It is voltage switchable for 120 V or 240 V and has a detachable cord. The P1000 does not provide better audio performance but will
charge the batteries faster than the standard charger.
Have a care not to place either the P1000 or desktop charger directly over or under the Power DAC or complete isolation of AC noise
will not be achieved. The DAC should also be isolated from any other AC powered products by at least 6 inches.
Voltage Conversion and Changing Fuses
The Power DAC is supplied with either 120 V or 240 V chargers. They can be converted internally if you move to a country with different
power. Contact MSB for instructions. The charger contains a fuse. The fuse may be replace with a 240 V fuse with a rating between
2.5 and 3.5 Amperes. Remove the 6 screws from the cover of the power supply and snap in a new fuse.
This DAC does not contain fuses that can be changed. Instead resettable fuses are included.
Changing the Batteries
Removal of the cover - Unplug the AC power. Work on a soft scratch resistant surface like a carpeted oor. Start with the unit upside down and
remove three screws located along the front edge of the cover. Then turn the unit over and remove the three screws along the back edge of the cover.
Loosen the four screws holding the endcaps on as they may prevent the cover from moving easily. Slide the cover toward the front of the unit and lift
up. Carefully reach in and unplug the cable from the front. Set aside the cover.
Replace one battery at a time - Remove the cover clamping the battery. Unplug the two wires to the battery, replace and plug back in.
Troubleshooting
Battery play time is getting shorter - Replace batteries.
No sound - Check that source is valid audio source. Change to a standard CD just to be sure. Check that analog outputs are connected properly. Check
that charger is plugged in and a charge LED is lit.
Still no sound - connect an analog output from the source directly to the preamp input. Verify that the rest of the system is working. Now move the
same analog cable to the DAC and plug in the digital source to the digital inputs.
You hear audio clipping - the output level may be too high for your preamp. Check the input specications on your preamp. (See Power DAC
specs).
The unit does not work powered on 240 V - unplug power quickly or capacitors may smoke. You may have the 120 V charger. Check ID plate.
Warranty
All MSB products carry a one year warranty. No returns accepted without an RMA. Upon receipt, MSB will repair or replace any defective product.
All product shipped FOB Aptos. Shipping and shipping damage is the responsibility of the consignee.