Audio Note DAC4.1x Balanced - Manual (Page 8)

The DAC4.1x Balanced features an upgraded version of the M6 Line preamplifier
output stage, using the 5814a and 6463 double triode valves. This is coupled to an
output transformer, wound with Audio Note (UK) copper wire on a High B C-core.
With a 33:1 step-down ratio, this output transformer not only has exceptionally wide
frequency response, but also just about the absolutely best dynamic transfer function
possible. The analogue output has provisions for both unbalanced and balanced
operation, using the best available quality RCA and XLR connectors.
To power this spectacularly revealing arrangement, we have incorporated a dual
channel power supply with double choke filtering and vacuum tube rectification. This
technique not only provides excellent isolation between the digital circuitry and power
supply, but also provides well-isolated short and clean analogue signal paths. The
digital power supply is an exceptionally low noise, shunt-type.
Internal component quality of this caliber has never before been seen, in either
consumer or professional equipment. There is an abundance of Audio Note (UK)
capacitors and Audio Note (UK) Tantalum film resistors throughout the circuit.
Analogue stage filter inductors and internal wiring are all produced with our own
Audio Note (UK) wire.
Please take care when unpacking your
DAC4.1x Balanced. Choose a clean, clear
location to unpack your unit. Be aware that the Pre Amplifier is very heavy; before
attempting to unpack or lift the unit, check the weight and if necessary use more than
one person so that it can be moved safely and easily.
We recommend that you retain and carefully store all of the original packing
materials, in case transportation / shipping is required at a later date.
Select a suitable location for the unit. This should be a dry, dust free and level area,
preferably shielded from direct sunlight and free from vibration. Also ensure that the
location is stable and capable of carrying the weight of the unit.
A suitable mains power outlet must be close to the location; power cords must not be
pulled or stretched tightly in an attempt to reach a wall socket. If the power cord will
not easily reach the socket, choose a closer location!
Please ensure that adequate ventilation for the unit is provided, and that airflow
through any ventilation slots in the unit is not restricted. We recommend a distance of
at least 20cm free space is maintained above the unit. Please also remember that
valve equipment operates at extremely high temperatures, so a position that is
inaccessible to children or animals is essential.
UNPACKING AND INSTALLATION
DAC4.1x Balanced continued…