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CD120 linear 16 bit 44.1kHz CD-player
FEATURES:
Non-Oversampling, No digital filter
J-FET/Transisters made of analog filter without any op-amp
Very short signal pass length
Very less number of parts in Analog section
Sampling frequency: 44.1kH/88.2kH (selected manually using remote control unit)
Output voltage: 2.35V
Digital output: 1 group, Unbalanced
To Experience the True Possibility of 16bit/44.1kHz Format
Non-Oversampling, Digital-filterless DAC
Non-Oversampling DAC concept was first proposed by Ryohei Kusunoki in late 1966. In recent interview, he states that "the issue is not either it is Non-Oversampling or Higher-rate-sampling, but the use of the digital filter can cause smearing in the time domain." We can confirm this smearing effect on the sound caused by the use of digital filter rather easily through listening experiments. This leads us to believe that the current problem with CD is not the limitation of 16bit/44.1kHz format, but the use of the digital filter which is preventing us to experience the true possibilities and the limitations of 16bit/44.1kHz format. The sound of Progression is enough to prove this matter.
Non-oversampling, Digital-filter-less DAC Concept
by Ryohei Kusunoki
Passive I/V conversion In Progression
I/V conversion is handled by a passive device instead of an active one. The result is a superb transient response without any over-shooting, and still maintains the output voltage of 2.35V
SPECIFICATION:
DAC resolution : 16bit TDA1543
0dBFS signal output : 2.35V RMS
Output Terminals : Gold plated Tube RCA unbalanced
Frequency response : Less than +/- 0.5 dB deviation 20Hz-20kHz
Phase response : Less than 5 degrees deviation 20Hz-20kHz
Signal-to-noise ratio : More than 100dB
Crosstalk : Less than -100dB
Distortion (RCA) : Less than 0.12 %
Remote Control : Philips RC-5 compatible IR system 36kHz modulation frequency
Dimensions / Weight : 8.5cm x 43cm x 32cm (HxWxD) / 10kg
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