USB NOS DAC - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 25th February 2016, 08:33 AM   #1
tedkok is offline tedkok  Hong Kong
diyAudio Member
 
Join Date: Feb 2015
Location: Hong Kong
Default USB NOS DAC

I am planning to make a USB DAC system using XMOS and NOS discrete R2R DAC that can accommodate up to 24 bit 192 Kbit/s with digitally controlled R2R output volume control. JFET output buffer. Wondering if anyone will also be interested ?
  Reply With Quote
Old 25th February 2016, 11:22 AM   #2
diyAudio Member
 
Overkill Audio's Avatar
 
Join Date: Oct 2006
Default Board without power supply is good.

Hi Tedkok,

Yes I would be interested.
I am interested in a DAC / remote volume solution that can be implemented in an active monitor system.
USB input is good, but we also require 12s, AES and SPDIF inputs as well.

I have my own very high quality DC power supply available to the board so I would not want to a high end power supply as this would be a waste of money and board space for me. I can supply pristine DC at whatever voltage is required.

Thanks and all the best
Derek.
__________________
" This is not the end, not even the beginning of the end, but it is the end of the beginning "
Sir Winston Churchill 1943
  Reply With Quote
Old 25th February 2016, 11:26 AM   #3
diyAudio Member
 
abraxalito's Avatar
 
Join Date: Sep 2007
Location: Hangzhou - Marco Polo's 'most beautiful city'. 700yrs is a long time though...
Blog Entries: 142
Send a message via MSN to abraxalito Send a message via Yahoo to abraxalito Send a message via Skype™ to abraxalito
I'll certainly be interested in the design of the R2R DAC.
__________________
The heart ... first dictates the conclusion, then commands the head to provide the reasoning that will defend it. Anthony de Mello
  Reply With Quote
Old 20th June 2016, 04:15 PM   #4
tedkok is offline tedkok  Hong Kong
diyAudio Member
 
Join Date: Feb 2015
Location: Hong Kong
Thanks for the message. After some deep thinking, I considered that it will be safer to design the USB DAC using off the shelf DAC first, before moving to discrete component R2R DAC.

I am working on the first design

XMOS (XU208) based USB interface

with DAC of my choice, but will also need you guys' recommendation.
Should I work with a ESS9018Q2M, or dsd1973?
Both support DSD, and 192KHz 24bit PCM audio.

Any suggestions?
  Reply With Quote
Old 28th June 2016, 05:47 AM   #5
baek47 is offline baek47  Denmark
diyAudio Member
 
Join Date: Sep 2009
Hi
I just connected a X-1 XU208 XMOS USB from I2S (not spdif) to an old philips tda1543 (pulled from a old cd). There is music.

Just struggling to get my raspberry to recognize the USB Card.
  Reply With Quote
Old 12th October 2016, 01:53 AM   #6
tedkok is offline tedkok  Hong Kong
diyAudio Member
 
Join Date: Feb 2015
Location: Hong Kong
After some struggling, a XMOS XU208 + ESS9018 DAC module as the first step.

The module contains all the power management circuit, TCXO, such that it works with a single 5V (USB power), and the following control

1) BT, analog, USB input selectable
2) APPLE/Android input selectable
3) USB and two buttons ESS bit perfect vol. control
4) USB and button Mute control

There is external relay control pin from XMOS to allow selectable output between ESS DAC output and an analog source

The volume and mute control is UAC 2.0 compatible, or through buttons connected to XMOS

The XMOS software is under development, hopefully to update you within this month.

I was wondering if anyone would be interested to purchase this module if it has a price tag of USD40 + shipping?
Attached Images
File Type: jpg pcbb.jpg (519.7 KB, 86 views)
File Type: jpg pcba.jpg (579.6 KB, 84 views)
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
CS4397 NOS USB DAC Idea Rulek Digital Line Level 3 26th July 2014 11:22 PM
FS: AudioSector NOS-USB Dac Tea-Bag Swap Meet 0 15th August 2010 11:53 PM
USB interface NOS DAC?? sbrtoy Digital Source 25 7th May 2007 06:14 PM
USB powered NOS USB DAC with built-in headphone amp dsavitsk Digital Source 15 10th August 2006 07:11 AM
Tda1541a Nos-usb-dac dsavitsk Digital Source 9 12th April 2006 07:48 PM


New To Site? Need Help?

All times are GMT. The time now is 06:47 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.
Copyright 1999-2016 diyAudio

Content Relevant URLs by vBSEO 3.3.2
Wiki