Circuit
simplicity and a minimum number of components are the key elements.
Less is better, but we do want to use the right device for the right
purpose
in the right way. DC-1 Upgrade Edition takes form from its “father”
DC-1, and it is a simple appliance, using only the minimum quantity of
parts for the proper work, following “the simpler the better, but not even simpler”.
This is the simplified structure of DC-1 Upgrade Edition:
A few features:
Custom mains filter Custom power
transformer Fast-soft recovery Diodes
in
TO-220 (<25ns) 6 separated power supplies 5 out of 6 power supplies are shunt
regulated New special shunt
power
supply dedicated to the d/a chips 75ohm SPDIF input only Scientific Conversion, with only 0,5pF
(!), input digital transformer Asyncronous reclocking
circuit Two 16bit (multibit) d/a chip in parallel Zero-oversampling Direct output from dacs without any output
stage (zero-feedback...) Pure silver internal wiring Dale 1% resistors AudioNautes special output capacitors HDG (High Density
Graphite) to damp vibrations Professional high quality standards PCB
designed without edges
The signal passes through a few elements only.
After
the RCA SPDIF input connector, there is no switch and it directly goes
into the
receiver. The output from this chip goes to an asyncronous reclocking
circuit
and then to the d/a (digital to analog) converts (2 in
parallel). The output
from the converters goes to the output RCA connectors through special
audio
capacitors (branded AudioNautes) and special custom pure silver wires.
That’s
all, there is no output analog circuit (unlike the zero-feedback
discrete
circuit used in the original DC-1). Part of the analog sound of this
appliance
is in its simplicity.
This converter has been designed for a balanced
sound,
full a harmonics, without tricks: listen to it for a few hours and
enjoy the
Music!
Specifications
Power
Supply:110/120 Vac or 230/240 Vac 50/60 Hz +/- 10% Power
consumption:7 Watts max Frequency
response:20Hz to 20 KHz + 0dB/ -1dB Output
level @ 0 dB:1,3 Vrms @ 1kHz
digital full scale Output:Inverting Converter:16
bit Oversampling:0 times THD:<0.3% @
1,3 Vrms@ 1kHz Output
impedance:<700 ohm Input:Gold
plated RCA,
Teflon - S/PDIF 75 Ohm - 24 bit/96 KHz Output:Gold plated RCA,
Teflon - unbalanced Dimension
(WxHxD):23
x8,5 x 34 cm. Weight:3.5 Kg Shipping
weight: 3.8 Kg
