# Very low jitter OCXO clock # 24-bit 192KHz DAC # Precision power supplies # USB and SPDIF inputs
With the DC-19 you can entered the new age of musical enjoyment, with the ability to reproduce recorded music more accurate than ever before.
The recent developments in high resolution computer readable formats, allow you to listen to the finest recordings that are easily distributed as downloads.
Precision separated stabilized ultra low noise supplies power the separated stages.
The USB receiver is clocked by a high stability and low phase noise OCXO oscillator.
Ultra low distortion and low noise audio operational amplifiers are used.
The Texas Instruments PCM1794A DAC and the OCXO clock are placed in the DAC stage.
DC-19 is connected to the PC with a USB cable, a SPDIF input is also available.
Functions and settings are made from the PC.
You can remotely control the computer application with any mobile phone.
Through careful design, parts selection and pcb layout, an extremely low noise floor was achieved.
For low jitter an oven control crystal oscillator stable at ±0.1ppm was designed.
Jitter is an often debated subject and most audiophiles do not even realize that they have jitter until it is reduced.
INPUTS: USB and SPDIF.
AUDIO CLOCK: OCXO** clock.
DAC: 24-bit 192Khz , PCM1794A.
FREQUENCY RESPONCE: -0.1db points from 20 to 20KHz.
DISTORSION: Less than 0.005%@2V RMS output.
MAXIMUM OUTPUT: 3V RMS.
OUTPUT IMPEDANCE: Main outputs 220 Ohms.
POWER REQUIREMENTS: 115VAC & 230VAC 50/60Hz, 40W maximum.
DC-19 digital converter
** OCXO or oven controlled crystal oscillator.
A crystal oscillator uses the mechanical resonance of a vibrating crystal to create an electrical signal with a precise frequency.
The OCXO circuit is placed in an oven chamber with stable high temperature for stability.
The clock is stable at ±0.1ppm.
Phase noise: –90dbc/Hz@ 10Hz, -120dbc/Hz@10KHz