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Details about  24bit 192kHz USB to I2S PCB CM6631/A w/Ultralow noise 6.5uV regulator for ES9018

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24bit 192kHz USB to I2S PCB CM6631/A w/Ultralow noise 6.5uV regulator for ES9018
24bit-192kHz-USB-to-I2S-PCB-CM6631-A-w-Ultralow-noise-6-5uV-regulator-for-ES9018
Item Ended
Item condition:
New
Ended:
10 Feb, 2013 12:10:53 GMT
Price:
US $39.95
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Approximately £24.00(including postage)
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Description

eBay item number:
330830930245
Seller assumes all responsibility for this listing.
Last updated on  31 Jan, 2013 02:27:22 GMT  View all revisions

Item specifics

Condition:
New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging is ... Read moreabout the condition
 

(Limited time discount at 39.95 only! for Celebrate over 1000 postive feedback received! limited 1 per customer)

24bit 192kHz USB2.0 to I2S / SPDIF PCB CM6631A with ultralow noise 6.5uV regulator

This PCB is tested with I2S input to ES9018 with no unlock problem and no sound distortion problem(default power on setting, default dpll setting, no need metal shielding cover the dac chip, no need to wait for the lock to become stable after power on). The sound quality is better than use SPDIF input hundred times, it can also be used for other DAC input, it is the best asynchronous USB2.0 to I2S PCB for audiophile Diyer to enjoy.

The ES9018 requires clock frequency above 40 MHz for optimal operation. This interface offers 49.152Mhz/45.158Mhz clocks that can be connected directly to the ES9018 DAC (bypassing the local clock). With synchronous operation you will not only experience better sound, but you can eliminate the unlock problem that many have experienced with asynchronous operation. Other interfaces are designed to operate with oscillators of 24.576Mhz and 11.2896Mhz and thus cannot properly interface with the ES9018 in a synchronous manner. It is the only low cost interface that is optimized to interface to the ES9018 in a synchronous manner.

Feature:

1) Dual 6.5uVrms Ultralow noise linear power regulator (use of decade old LM317/1117 regulator is kidding for audiophile)

2) Two dedicated oscillator 49.152Mhz/45.158Mhz for 44.1kHz and 48/96/192kHz with dedicated ultralow noise regulator for lowest jitter operation and highest clarity audio (much better than most XMOS design 24.576Mhz and 11.2896Mhz oscillator only)

3) External power(5V) or USB power selectable jumper

4) Solid ground plane (a must for high speed digital circuit)

5) No Via in active circuit (via inductance always create jitter problem)

6) 15ppm Japanese crystal and Murata capacitor sourced from digikey (guarantee no fake product from China)

7) Gold plate USB connector (Molex, FCI, or other depends on stock)

8) Compact size 50mm x 52mm

9) SPDIF (coaxial /optical) connection is routed out for diyer to mod if needed (audiophile don't use SPDIF, I2S is always better)

10) 100% tested before shipped (each sampling rate 44.1/48/96/192kHz i2s output are checked individually)

Windows 7/Vista/XP Driver is available to download from our website
http://www.diyinhk.com/support/U6631_U6631A-1.01_20120730.rar

*USB2.0 is a must for 24bit/192kHz operation
*Use a fresh install of windows and a dedicated USB port always avoid problem and run stable
*The length of I2S connection to the DAC chip should be as short as possible for best result and below 10cm is recommended
*If the PCB uses external power, the usb cable should be plugged in after the external power turn on, or user need to replug the usb cable for the device to recognize

Special note for ES9018:
*Connect X49 on the PCB to replace ES9018 oscillator input for 48/96/192khz operation, connect X45 to replace ES9018 oscillator input for 44.1/88.2/176.4khz operation. X49/X45 should pair with ground to ES9018 and replace the original ES9018 oscillator output and ground. The connection should be as short as possible.

For other DAC, please check the following I2S signal specification to decode each sampling rate:
*We also tested PCM1794A and it can work at 192khz with this PCB perfectly.

DATA LRCK BCLK MCLK
16/24bit 44.1kHz 5.6488Mhz 11.2896Mhz
16/24bit 48kHz 6.144Mhz 12.288Mhz
16bit 88.2kHz 5.6488Mhz 22.5792Mhz
16/24bit 96kHz 6.144Mhz 24.576Mhz
16bit 176.4kHz 11.2976Mhz 22.5792Mhz
16/24bit 192kHz 12.288Mhz 24.576Mhz

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