Quote:
Originally Posted by blackwasp As discussed, please go ahead with your order Navin, I will help you out with the software side of things. This weekend I will try to run the software on my Pi and figure out all the startup items and try to incorporate a 2 line display as well. |
Awesome thanks. I am putting all I know about this topic here so that other members that find this thread, have more to go on.
I found these links, but don't know if they help.
http://naisema.blogspot.com/2017/10/...-with-dac.html https://github.com/TomNiesse/volumio20x4LCDPlugin
A 2" screen and the code to connect it.
https://robu.in/product/2-0-inch-spi...ace-176-x-220/ https://www.reddit.com/r/raspberry_p..._raspberry_pi/
This guy uses Moode which is not MQA compatible.
https://github.com/antiprism/mpd_oled
FYI
"
Allo USBridge Signature
I see more caps! The focus of the device is to lower the noise on the USB bus. Allo chose a USB hub IC (TI) and a separated Ethernet to USB Ic (Axis).
To lower the noise of the USB, Allo had to lower noise on each rail. In total, USBridge Sig uses more than 30 low-dropout regulators (LDOs). Even the SD card power rail has a dedicated LDO. There are zero switching elements on board."
source:
https://theaudiostandard.net/thread/...reamer?page=29
"
USBridge signature uses a CM6 tweaked rpi board bereft of bluetooth, wifi and non-galvanised USB ports. So you will not have a choice of rpi.
It however supports hi-resolution files (DSD) out of the board, of course also depends on your DAC capability."
Source:
https://www.hifivision.com/threads/b...8gb-ram.83804/
For those who do not want to build the Pi2AES - RPi4 based streamer they can get it fully configured from here:
https://www.pi2design.com/coming-soon.html
Volumio has also "productized" this concept using ASUS's TinkerBoard S with a DAC integrated for good measure.
https://digiphonix.home.blog/2019/05/08/volumio-primo/
The DAC is based on the 9038Q2M but the
implementation is not as rigorous as Ben Du has done for his SonCoz SGD1 (probably the best implementation of the 9038Q2M chipset). The 9038Q2M chipset was really created as a DAC for mobile aka low power devices - some LG phones have it. The 9038Pro is still the flagship.
Asus has just released an upgraded version of the Tinkerboard and Tinkerbaord S -
Tinkerboard 2 and Tinkerboard 2S. The Tinkerboards have lower noise on the USB ports than the RPi4 (which itself is better than the RPi3 as the RPi4 a separate bus for Ethernet and USB). The Tinkerbaords have still to catch up to the Allo USBridge Signature when it comes to noise on the USB bus. I would love to see what Allo does to up the game when they build a breakout board using the CM4 module instead of the CM3+ module used in the USBridge Signature.
I also was hoping to connect my La Cie D2 Professional to the streamer via the USB port of a router. I have the hard disk (see link) but would need a recommendation for a suitable router. This way the streamer would consider the Hard disk to be "
just a source to stream from" like Tidal, Amazon Music or Spotify.
https://www.lacie.com/as/en/products/d2/
Some solutions that do this.
https://www.cnet.com/home/smart-home...-nas-solution/ https://www.makeuseof.com/tag/connect-hdd-raspberry-pi/ Quote:
Originally Posted by haisaikat If you need a complete streamer with its own display, spend additional bucks and get a dedicated streamer of the likes of CA CXN or the Bluesound Node 2i. You will even benefit from a better power supply.
If you want to stick to Open Source and SBC with I2S Hat, stick to headless for peace of mind.
And yes, stay away from those SMPS based power supplies, they will send noise through the main power supply to your DAC too and impact its clocks unless you have power isolators. |
Thanks. Lots of good points.
1. The CXN and BlueSound are "average" when it comes to sound quality. The cheapest streamer + DAC I could find that does a good job of audio, is DSD/MQA compliant, and can stream from an external hard disk is the $2000 Matrix Audio Element M. The implementation of the 9028Pro chip is good. If you do
not need to stream from an external hard disk, the Matrix Audio Mini I Pro 3 is good too. It uses the same 9038Q2M found in the LG phone, SonCoz SGD1 and Volumio Primo linked above. Again it is not the chip but the implementation around it that matters.
2. The object of integrating a display is not for function but to tell if the streamer is actually playing something without having to turn the TV on. I won't be controlling the streamer from the display. I would be using an iPad.
3. Linear power supplies are far better for audio than SMPS power supplies with
ONE exception - the Pi2AES. A conversation with Michael Kelly, the designer of the Pi2AES revealed that the Pi2AES is designed to accept a 24VDC SMPS (Meanwell) and it has the ability to clean the noise as well as offer protection to the Pi2AES as well as the 5VDC line that will power the Pi via the GPIO.
If I wasn't keen on AES or I2S, I would have used the DigiOne Signature. However SPDIF, at least in theory, can never be as good as AES or I2S if they are implemented correctly. SPDIF is a single wire which carries the data and the clock. AES is Balanced. I2S has 4 wires BCLK, LRCLK, SDATA, and MCLK (see links below)
https://electronics.stackexchange.co...audio-protocol https://www.ti.com/lit/ug/sprufx4b/s...oogle.com%252F Quote:
Originally Posted by JoeTheWanderer [Edit]: PS - would love to see updates about the build in the forum. ![Smile](https://www.team-bhp.com/forum/images/smilies/smile.png) |
Watch this space Joe.
The current lockdown might slow thing down (getting parts is going to be difficult) but with help from BlackWasp, we will make this happen albeit not as quickly as we could have if there was no lockdown.