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Tube output board:
Our tube output board use two double triode il class A : ECC-81 / 12AT7.
The current to voltage conversion is possible by a simple passive solution by combination of special
resistor and variable pot's, so the output signal from dac without any capacitor drive the grid of the tube.
A simple filter at 6 db/oct reduce the spuriae generated from dac, this solution don't introduce variation of phase and phase-distorsion.
Output stage have a very low impedance characteristics as less off 250 ohm.
The output capacitor is made under design of Lector, they are film-and-foil with special dielectric and plastic material. This capacitors supply a "ghost performance" as the tube is direcly connectet to output!
Power supply for high-voltage section have special design circuity as "float" transistor device so the
residual noise is very low.
Other strong points of our Digicode 2.20:
High tickness chassis as 15/10 mm
High tickness plexiglass front panel as 8 mm
Vista view of tube operation by window
High grade PSU gold plated connector military grade
Cherry wood for lateral sides
Selected tube as per noise and triode precision
Dual power supply operation swicth as ANALOG and DIGITAL
Ground selector swicth for board and chassis gnd
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