GUSTARD DAC-R26 Balanced Decoder R2R+1Bit Dual Native Decoding Music Bridge
Jan 17, 2024 at 5:38 PM Post #8,281 of 8,955
Phase alignment and time domain alignment would be the biggest differences. Drivers will hit and sound will reach the listening position at the precise same time.

These filters mainly affect 400hz and below where the room is mainly in control of your sound. Mids and highs are mainly untouched from a frequency standpoint.
Also unlike PEQ which boosts and attenuates the convolution filter applies the inverse for correction.
Send me measurements. I’ll make you one!
I would be up for trying this. l have a Dayton USB mic, if l sent some measurements over the weekend, could you make a con filter for JRiver?
 
Jan 17, 2024 at 5:44 PM Post #8,282 of 8,955
I would be up for trying this. l have a Dayton USB mic, if l sent some measurements over the weekend, could you make a con filter for JRiver?
For sure! Anyone that’s interested just PM me
Any program that has a convolution engine.
Just email me the measurements and your mic calibration file.
I’ll PM you
 
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Jan 17, 2024 at 5:55 PM Post #8,283 of 8,955
Decided to upgrade R26 renderer firmware from version v1.4 to v1.42, but things got very weird….:rolling_eyes:

My system is based on a Raspberry Pi 4 with a HiFi Berry Digi+ Pro board (https://www.hifiberry.com/blog/hifiberry-digi-pro-our-most-advanced-digital-audio-interface/), running Volumio OS (https://volumio.com/en/) for music playing from a Synology NAS.

For the optical connection I’ve DSD over PCM (DoP), because of the limitations of HiFiBerry card.

I also use Audirvana Studio app (https://audirvana.com/) on Windows do play directly to the R26 renderer using the network (LAN).

With renderer firmware version 1.4 everything worked fine. Had only some clicks/lags when changing music.

Using the optical and coaxial connection (SPIDF) I was able to reproduce:
  • PCM files limited to 192 KHz;
  • DAC played DSD files (DSD64-2,8MHz) with DoP, via optical/coax interface with no problems;
  • The DAC display the correct protocol (DSD, PCM and sample rates).
  • The DAC did not recognize MQA files and played them as PCM files.
Using the USB interface, I was able to reproduce:
  • DSD files (DSD64, DS128 and DSD256) with no problem;
  • All PCM bit rates
  • MQA 352,8kHz encoded files.
  • The DAC display the correct protocol and sample rates (PCM, DSD and MQA).
Using the renderer via network (LAN), I was able to reproduce:
  • DSD files (DSD64, DS128 and DSD256)
  • All PCM bit rates
  • MQA 352,8kHz encoded files.
  • The DAC displayed the correct protocol and sample rates (PCM, DSD and MQA).
Tried the latest official version of the renderer firmware v1.42 and using PCM, DSD and MQA, confirmed that DSD is not recognized using LAN via Audirvana Studio. Also notice that:

1 - Using optical with DSD64 files I get a huge noise on speakers and the display repeatedly changes from PCM to DSD!
2 - Using USB interface with DSD and MQA encoded files, the following happens:
DSD64-2.82Mhz shown as PCM 352,8k​
DSD128-5.64Mhz shown as PCM 384k​
DSD256-11.28Mhz shown as PCM 384k​
MQA 352.8kHz shown as PCM 44.1k​

Did a downgrade to version 1.4 and DSD files are now playing via LAN and display show the correct format (PCM, DSD, MQA). But using the optical interface the noise did not disappear (for DSD files) and the display is changing from PCM do DSD, like previously stated. Again, using USB with DSD and MQA encoded files, the following happens:
DSD64-2.82Mhz shown as PCM 352,8k​
DSD128-5.64Mhz shown as PCM 384k​
DSD256-11.28Mhz shown as PCM 384k​
MQA 352.8kHz shown as PCM 44.1k​

Furthermore, using the LAN, instead having a MQA in display I’ve now OFS 352.8k (Please see picture Display_Playing_MQA_file_using_Streamer.jpg).

Any clues how to solve this? (I would like to be able again to reproduce both DSD and MQA files from USB and DSD files using the optical interface as with version 1.4).
I would get a brand new sd card and install the v1.4 firmware on it.
 
Jan 17, 2024 at 8:20 PM Post #8,284 of 8,955
Or:
Upgrade to 1.43
Downgrade to 1.4 using Balena Etcher method

IDK if upgrading your Display FW will help

Anyway all found in page 1
 
Jan 17, 2024 at 8:22 PM Post #8,285 of 8,955
I can vouch for Cam and the Focus Fidelity filters, they’re amazing. He made one for me last April and the difference was like signing my name on nice letterhead vs crumpled newspaper 😬 Maybe that was an odd metaphor, so I’ll try it like this: the sound came into focus by a very noticeable margin and the music tightened up, had more integrity. It made my CD transport much less attractive to the point I’ve pulled it from my rack.
 
Jan 17, 2024 at 9:05 PM Post #8,286 of 8,955
Hello everyone,

I want to test water here as I’m thinking of upgrading my gears and selling my R26 w/upgraded power cable, LPS+fiber optic upgrade, and Leo Bodnar clock as a bundle in mint condition (this thread contains all the info about these upgrades, and I’m happy to elaborate if you’re interested). It‘d be difficult to retrieve the original packaging for the unit, but everything is intact with no visible scratches. The unit is first hand and just over 4 months old. Based on my calculation, the entire bundle, which punches way above its weight, cost me over $2100. I’m looking at $1600.

Please reply or dm if you’re interested.

Thank you
 
Jan 17, 2024 at 9:15 PM Post #8,287 of 8,955
Hello everyone,

I want to test water here as I’m thinking of upgrading my gears and selling my R26 w/upgraded power cable, LPS+fiber optic upgrade, and Leo Bodnar clock as a bundle in mint condition (this thread contains all the info about these upgrades, and I’m happy to elaborate if you’re interested). It‘d be difficult to retrieve the original packaging for the unit, but everything is intact with no visible scratches. The unit is first hand and just over 4 months old. Based on my calculation, the entire bundle, which punches way above its weight, cost me over $2100. I’m looking at $1600.

Please reply or dm if you’re interested.

Thank you
That’s a great deal
Whatcha moving towards?
 
Jan 18, 2024 at 4:51 PM Post #8,290 of 8,955
Hi guys

I'm buying Shanling ET3 CD transport soon, wanted to connect the r26 and et3 via i2s cable to upsample or use et3 to it's full potential.
Bummer is that r26 has a different i2s pin layout, where can I get such cable.

Adding a screenshot of both pin layouts, hope they are right.
image.png
 
Jan 18, 2024 at 5:44 PM Post #8,291 of 8,955
Today I'm received Media Converters, all set. And my first impression high tones are very smoothly. Even to much in first seconds. After 2 h situation back to normal. I change cables power and interconnect, and this fiber gives really changes. Total tones sound bery impesiv with any not annoying. This set stay with me
 
Jan 19, 2024 at 7:35 PM Post #8,295 of 8,955
" mainstream protocols Spotify (premium account) and Tidal Connect (confirmed for Mac, No in Android)" any updates with the android functionality?
Spotify and Tidal works flawlessly, but for Tidal on Android you need to install an old app version (I'm using 2.42.2 apk) with this old apk version Tidal works well.
 

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