Finally set spdif converter to working state today.
Schematics similar to Twisted Pear one, on MAX9203ESA+
Level shift (5V to 3.3 V) on SN74LVC1G126DBV.
Toslink part on TORX1952
Multiplexer 74hc151
Connected to spdif in of diyinhk board
All works flawlessly, if you need detailed schematics, I will publish it then
Schematics similar to Twisted Pear one, on MAX9203ESA+
Level shift (5V to 3.3 V) on SN74LVC1G126DBV.
Toslink part on TORX1952
Multiplexer 74hc151
Connected to spdif in of diyinhk board
All works flawlessly, if you need detailed schematics, I will publish it then
Hi I have the 6 channel 384 version. Does this not work with DSD multichannel in general, or just not with the windows drivers? I would like to use it in linux or mac os.
thanks
Hi everyone
I'm about to construct this DAC and I am hoping that you good people will be able to give me some idea where the "good oil" ends and the "snake oil begins".
My situation is that I'm currently using an HTPC, with a gigabyte M/B and ALC887 codec, to feed a My-Ref RevC amp and Q Acoustic 3050 speakers. I also have a HiFimeDIY Sabre U2 Asynchronous USB DAC, that I believe is malfunctioning because the Realtech onboard codec sounds so much better!
Before I purchase to components from DIYINHK, I would be grateful if the more knowledgable people here could answer a few questions.
1. Is it worth paying the extra $30 for the isolated XMOS board?
2. Which provides the better connection USB or SPDIF? The M/B has a SPDIF header.
3. In my system am I likely to gain any advantage using the more expensive low-noise power supply regulators?
4. Would this transformer be suitable for this DAC? Transformateur R-CORE 30VA 2x15V + 2X9V - Audiophonics
Any assistance you can provide would be very much appreciated.
I'm about to construct this DAC and I am hoping that you good people will be able to give me some idea where the "good oil" ends and the "snake oil begins".
My situation is that I'm currently using an HTPC, with a gigabyte M/B and ALC887 codec, to feed a My-Ref RevC amp and Q Acoustic 3050 speakers. I also have a HiFimeDIY Sabre U2 Asynchronous USB DAC, that I believe is malfunctioning because the Realtech onboard codec sounds so much better!
Before I purchase to components from DIYINHK, I would be grateful if the more knowledgable people here could answer a few questions.
1. Is it worth paying the extra $30 for the isolated XMOS board?
2. Which provides the better connection USB or SPDIF? The M/B has a SPDIF header.
3. In my system am I likely to gain any advantage using the more expensive low-noise power supply regulators?
4. Would this transformer be suitable for this DAC? Transformateur R-CORE 30VA 2x15V + 2X9V - Audiophonics
Any assistance you can provide would be very much appreciated.
1. The isolated board when bought in the kit is only about $10 extra. Whether it is worth it is debatable. The isolation will prevent ground interference from your PC getting to the DAC via the USB ground connection. Many people seem to prefer isolation.
The down side to using an isolator is that it increases jitter. Many will then re-clock after the isolator to remove this jitter. The ESS DAC's have a jitter elimination circuit built in so you should be able to benefit from the isolation and not have an increased level of jitter.
2. USB can accomodate higher sample rates and will usually have lower levels of jitter, again that may not be an issue with the ESS DAC. If you use optical SPDIF then you get isolation of the signal as there is now no common ground connection between the computer and the DAC. This is similar to what you get with an isolation chip.
Optical spdif is better to use with this DAC as it is at the TTL level. Coaxial spdif needs the level boosted. You will need to check your MB to see what you have.
3. Hard to say but they are unlikely to make it worse
4. The non isolated kit needs 2 x 3.3V and +/-12V the isolated kit needs 3.3V 5V and +/-12.
Using a 9V transformer to get 3.3V will mean that you are generating a lot of heat dropping the voltage. A 5 or 6V transformer will produce a lot less heat.
12V DC from 12VAC should be fine.
The down side to using an isolator is that it increases jitter. Many will then re-clock after the isolator to remove this jitter. The ESS DAC's have a jitter elimination circuit built in so you should be able to benefit from the isolation and not have an increased level of jitter.
2. USB can accomodate higher sample rates and will usually have lower levels of jitter, again that may not be an issue with the ESS DAC. If you use optical SPDIF then you get isolation of the signal as there is now no common ground connection between the computer and the DAC. This is similar to what you get with an isolation chip.
Optical spdif is better to use with this DAC as it is at the TTL level. Coaxial spdif needs the level boosted. You will need to check your MB to see what you have.
3. Hard to say but they are unlikely to make it worse
4. The non isolated kit needs 2 x 3.3V and +/-12V the isolated kit needs 3.3V 5V and +/-12.
Using a 9V transformer to get 3.3V will mean that you are generating a lot of heat dropping the voltage. A 5 or 6V transformer will produce a lot less heat.
12V DC from 12VAC should be fine.
Hello,
I finally took the time to look into this and got multi-channel DSD (64) to work on the combo XMOS board + ES9016 board.
I got inspiration from multichannel native DSD - Page 2 - XMOS embedded processors. Heart of XMOS technology, XCore.com
Feel free to ask for details if interested (although my implementation is not perfect).
Y.
I finally took the time to look into this and got multi-channel DSD (64) to work on the combo XMOS board + ES9016 board.
I got inspiration from multichannel native DSD - Page 2 - XMOS embedded processors. Heart of XMOS technology, XCore.com
Feel free to ask for details if interested (although my implementation is not perfect).
Y.
Does this support both ADC and DAC?
XMOS 768kHz DXD DSD512(DSD1024) high-quality USB to I2S/DSD PCB - DIYINHK
XMOS 768kHz DXD DSD512(DSD1024) high-quality USB to I2S/DSD PCB - DIYINHK
Not as such.
I use this combo (XMOS board + ES9016 DAC board):
8 Channels 384kHz 32bit ES9016 PCM DXD DSD Audio DAC - DIYINHK
This one (XMOS Multichannel high-quality USB to/from I2S/DSD SPDIF PCB - DIYINHK) is supposed to support ADC and DAC, but there is a trade-off between sampling frequency and number of channels:
384k 6ch out 4ch in + SPDIF out
192k 8ch out 8ch in + SPDIF out
384k 6ch out 4ch in + SPDIF out
192k 8ch out 8ch in + SPDIF out
The setup works quite fine; the only issue are pops and clicks when switching to (and skipping within) DSD files (when using the shipped firmware).
These disappeared once I modified the firmware.
(BTW, I flashed the XMOS chip via an XTag 3 debugger; I have not tried over USB/DFU.)
Generally speaking I am pleased with the sound quality. However, good sources are needed for my ears to notice a difference as compared to the audio chipset of my motherboard.
I have not replaced the op-amps (yet).
I also use basic switched power supplies for now.
These disappeared once I modified the firmware.
(BTW, I flashed the XMOS chip via an XTag 3 debugger; I have not tried over USB/DFU.)
Generally speaking I am pleased with the sound quality. However, good sources are needed for my ears to notice a difference as compared to the audio chipset of my motherboard.
I have not replaced the op-amps (yet).
I also use basic switched power supplies for now.
@Orion
Drivers can be purchased here: DIYINHK USB Audio Driver [Full Version and Signed] - DIYINHK
Drivers setup (including ASIO part) is described on this page: XMOS Multichannel high-quality USB to/from I2S/DSD SPDIF PCB - DIYINHK
Drivers can be purchased here: DIYINHK USB Audio Driver [Full Version and Signed] - DIYINHK
Drivers setup (including ASIO part) is described on this page: XMOS Multichannel high-quality USB to/from I2S/DSD SPDIF PCB - DIYINHK