DCSP Preamplifier
The main role of the preamplifier is to offer the user a command to adjust the listening level to his wish without affecting the original signal. Its secondary role is to help accommodate more sources and to select a single choice of the user while maintaining crosstalk at least equal, if not greater than the maximum dynamic range of the overall system. In this one title, we can consider that music from neighboring sources is completely inaudible.
As a result, it finds itself at the center of “high fidelity” system, so it’s a leading role entrusted to him
Our studies of the human auditory system, associated with the basic rules of physics, including noise, have led us to draft a strict specifications, with some constraints that left more room for conventional electronics … the noise temperature of certain components such as resistors, as well as intrinsic colorizations caused by capacitors is inconceivable, therefore we offer this unequaled innovation transparency..
The heart of the DCSP Helixir consists of a specific integrated chip with the particularity of having an insulating substrate, ensuring very low crosstalk and noise. The resistors consist of chromium and nickel, are calibrated by laser cutting ensuring unequaled manufacturing tolerance. Finally, optical isolation between the analog and digital part that comes finish with confidence inter modules links.
Input selection is by sealed relays with contact quality and construction assure us operation beyond megahertz. The coils are supplied with constant current source with very low noise, ensuring a perfectly quiet operation.
The balanced inputs laser calibrated, ensure impressive rejection ratio common mode, allowing with confidence for long distance connections.
The absence of any capacitor in the signal path, and a class A alimentation type “shunt” permit a very low noise voltage reference, and made of the DCSP a perfect example of transparency.
Laser calibration technology is the only way we can offer the accuracy required for the system, in terms of intrinsic accuracy of course, but also in terms of noise, allowing us to have a compact area where the R / 2R cells are switched, ensuring a very low noise level. An insulating substrate allows to have a stereo chip, operating in dual mono, as if these two channels were mounted in separate housings.
The balanced inputs have a common mode rejection ratio of 100dB , ensuring the transportation of analog information over long distances without increasing the ground noise of the system. This measurement is performed at 50Hz, it gives you an idea of its incredible immunity to low frequency noise of installations of electrical distribution networks.
A power supply type “shunt” in pure Class A, a reference ultra low noise voltage, a gain of 120dB control loop, a large quantity of capacitors, an optimized design with small islands masses, give our equivalent analogue systems a lead battery with an energy margin of a factor of 10.
Printed maps are subject to all care of Helixir ™. In addition to using a copper with a purity of 99.99%, we use a new method to deposit electroliquement Gold, without it being deposited in pyramids. The spread of the signal on the card can be in optimal conditions.
Cryogenic processing makes a perfect crystallization of materials allowing to extract the essence, either in conductance or in terms of wave propagation purity. Many components as well our circuit undergo this treatment.AUTRES PRODUITS
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