Roksan ROK-DA1 Digital Audio Converter (sold)

Made In England


Description :

The digital-analog-converter unit only for a 75-ohm coaxial digital input developed with compact-disk transport ROK-DP1.

An input signal is led to a circuitry by the shortest distance, and in order to send out by the shortest distance, the signal substrate is being directly fixed inside the rear panel.
Moreover, in order to avoid the tone-quality failure by leading about, a switchpoint contact, etc. of a product line, an input becomes one coaxial and the output has become one analog.

The power source by a toroidal transformer is carried in the under chassis at the part, and an interference with a signal system chooses the fewest location, and is being fixed. Furthermore, the cross interferencee is suppressed by making a digital part and an analog part become independent.

In a digital-analog-converter element main unit, it is the 64 time oversampling of the U.S. Crystal Semiconductors. The 1-bit type of a delta sigma scheme is adopted. This element is suppressing the interference of digital one/analog circuit which was making the power source and ground pattern of a digital part and an analog part become independent completely, and led the power source and the earth line.

The oversampling digital filter is carried in the digital circuit 8 times.

48kHz and a 32kHz signal are also supported at others with a sampling frequency of 44.1kHz.



Spec:
Form :  Digital analog converter  
Input : Coaxial digital: One line  
Output : Analog: stereo  
Sampling frequency : 32kHz, 44.1kHz, 48kHz (automatic correspondence)  
Dynamic range : 97dB  
S/N ratio : 126dB  
S/(N+D) ratio : 94dB  
Phase deviation : ±0.5 degree  
Channel separation : 100dB or more  
DC offset : Less than ±1mV  
Output power : 2.0Vrm  
Power source :  AC 240V, 50Hz/60Hz  
Power consumption : A maximum of 10W  
Dimensions : Width 215x height 80x depth of 325mm  
Weight : 3kg  





Price :sold

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