Our Non-oversampling DAC
using the TDA1545A chip with Asynchronous Relocking, Passive I/V stage.
Output transformer coupled
Features
Our own silver pulse transformer (this
separates the ground thus resulting in a quieter music) to couple the
digital output of your cdp into our DAC. Our nickel core transformer is
wound on a 2mils lamination (0.05mm).
Therefore the digital ground is broken up
between the DAC and the Transport/CDP to allow a cleaner presentation
as the grounds are isolated
Dedicated pre and post regulator (for each chip)
to bring down the noise floor
Specially wound Balanced power transformer to
power DAC, this is the same winding topology as our balanced power
supply. This further brings down the noise floor. The power transformer
is wound on a M6 core
Dedicated windings on the power transformer for
the digital power supply and the analog power supply. This is NOT
shared to prevent the transfer of digital noise to your precious analog
power supply.
The power transformer is fitted with MULTIPLE
electrostatic shields to prevent the spreading of the noise cause by
digital circuits. This electrostatic shields shunt noise to ground thus
keeping the power supply clean
Asynchrous reclocking to 100Mhz. Clock module is
place below the PCB to prevent spraying the board with noise. The clock
module is located at the bottom left end of the PCB. The clock has its
own dedicate power supply to decouple the noise generated from the clock
The DAC is design around a good power supply
system
IN the digital segment there is a master regulator and then
its is fed into local regulators individually finding the IC. SO each
digital IC is totally isolated from another digital IC
The Opamp segment is run again with its own local discrete
regulator. This keeps the noise isolated between left and right op-amps
Selectable gain structure of 1.25volts out,
2.2volts out and 4 volts output. This allows user to optimize their
gain structure.
On the output, output transformers is used to
couple the analog voltage from the DAC to the outside world. This way
the DAC is impedance match to your down line equipment. This output
transformer is wound on a M6 core
Chassis for the DAC is built on our tune wooden
Merbau wood with Stainless Steel plate similar to our TVC construction
Our new Neotech 7N copper for internal wiring
Teflon wires for power
Pure Silver RCA used for digital input and analog
output