AfterDark. Project ClayX I2S to HDMI I2S Bridge Interface for I2S DAC

fishoil

AfterDark. Project ClayX I2S to HDMI I2S Bridge Interface for I2S DAC CFS EVO Edition
電磁干擾（EMI）在設計I2S Bridge時，以盡量減少對射頻干擾和其他形式的EMI的影響。材料選擇，物理佈局，接地實踐，並且數碼線設計都已被指定，以減少電磁場對本機性能的影響。然而，與此同時，店主的主要目標是在正常的家庭環境中準確地再現錄音室錄製的音樂.

AfterDark. x 音響夜冷店 2017推出新產品: Project ClayX I2S to HDMI I2S Bridge Interface for I2S DAC
店主設計這I2S Bridge用於 fusionCAS, daisyCAS, audiophileCAS Digital Transport Device (DTD) or any Raspberry Pi3。

為什麼選擇I2S?
I2S（Inter-IC Sound Bus）是飛利浦公司為數字音頻設備之間的音頻數據傳輸而制定的一種總線標準。在飛利浦公司的I2S標準中，既規定了硬件接口規範，也規定了數字音頻數據的格式。
I2S有3個主要信號：

• 串行時鐘SCLK，也叫位時鐘（BCLK），即對應數字音頻的每一位數據，SCLK都有1個脈衝。SCLK的頻率=2×採樣頻率×採樣位數
• 幀時鐘LRCK，用於切換左右聲道的數據。LRCK為「1」表示正在傳輸的是左聲道的數據，為「0」則表示正在傳輸的是右聲道的數據。LRCK的頻率等於採樣頻率。
• 串行數據SDATA，就是用二進制補碼表示的音頻數據。
  

“cpu直出i2s真正火力全開, 初聽感覺像cd轉成sacd, 爛錄音變的更噴飯像是轉檔失敗一樣, 製作棒的果然是歌姬琴神.以前學長說, usb介面聲音輸i2s輸到連車尾燈都看不到, 當時的我竟然把他的話當放屁,現在感受到了, usb dac隔層紗的音質依舊復在”

“i2s是dac ic與數位音源最直接的橋樑, 有做過功課的鄉親朋友, 都知道i2s是最好的無能出其右, 其他任何傳輸介面都比不上它”


What is I2S?

• I2S is used in all audiophile CD Transport, connecting the reading mechanism to the DAC or SPDIF output.
• I2s is used also on every Exotic audiophile DAC.
• If it’s USB or SPDIF, I2S is the signal pathway from the USB receiver (e.g XMOS) to the audiophile DAC chip.
• I2S bypass a repeated encoding or decoding process at USB connection.
• Afterdark. provide a innovative solution for audiophile to experience the full potential of I2S interface with their Raspberry Pi 3 system.
• Since I2S is the standard protocol on digital audio signal transmission.
  

The Project ClayX I2S to HDMI I2S Bridge Interface Device is based on AfterDark. Project ClayX Palette I2S DAC Evo Edition designed with a separate Linear Power Supply providing passive and active stabilization.

In order to obtain an excellent transfer of the I2S signal through the HDMI cable, which is used between the raspberry Pi 3 and the I2S DAC, the silver plated cables is used to ensure the I2S signal is buffered with very fast line drivers.

All capacitors, used on the Project ClayX I2S to HDMI I2S Bridge Interface Device are “Audiophile Grade”. The circuit design is so short and clean, which can ensure all the digital signal can pass though it perfectly to I2S DAC.

The Project ClayX I2S to HDMI I2S Bridge Interface Device can work perfectly on the list of DACs provided with an I2S HDMI input.

AfterDark. has been developed very innovative approaches for I2S to I2S HDMI Bridge Interface Device with Raspberry Pi 3 which audiophile can ensure their I2S DAC is in excellent sound performance:

• Reduce EMI interference by separate I2S to I2S HDMI Bridge Interface Device away from the raspberry pi. It is because the owner believed that it is always a good idea to separate audio module, power module and avoid EMI from the high frequency of CPU processor.  
• Try to minimize the jitter by using high quality Audio Grade components, silver plated I2S cables and optimize all the circuit path as short as possible.
• Build an external DC plug with good quality Linear Power Supplies (LPS) for I2S to I2S HDMI Bridge Interface Device, the owner believe the power quality is extreme important to digital signal and sound quality.
• Try to reduce the interference on I2S to I2S HDMI Bridge Interface Device with better shielding material on Carbon Fiber Shielding (CFS) cables, EMI shielding sheet apply on major components and 3mm thick Carbon Fiber Board on top layer of I2S device.
• Try to build an excellent signal path for Hi-Res Audio using industrial quality components.
• Increase the shock stabilization on I2S DAC. Special absorber material is applied under the large heavy mass of aluminum metal to ensure audiophile I2S HDMI cable have rigid support.
  

所有發燒產品從設計,生產和裝配及售後服務將會在香港每日夜晚9點開始...人手製作。
因為店主只能在晚上開始生產線，店主每晚只能生產有限的AfterDark.產品。

如果你感興趣,請閱讀Facebook的Hiendy會員折扣優惠.
https://www.facebook.com/AfterDa ... 4637689746/?fref=ts

CKKeung

Can it work with the I2S inputs of Denafrips DACs?
Thanks!

fishoil

CKKeung 發表於 2017-9-27 10:02
Can it work with the I2S inputs of Denafrips DACs?
Thanks!

Yes, Denafrips DAC is using industrial standard i2s HDMI (lvds for PS Audio standard)

Denafrips DAC
"In the converter almost all possible digital inputs here Denafrips have decided on a maximum equip older model DAC, namely: RCA, BNC, 2xAes / Ebu, Amanero USB, 2hTOSlink, 2hi2s RG45 and i2s HDMI (lvds for PS Audio standard). My source has digital outputs Coax, Aes / Ebu, i2s HDMI. The best for me was i2s, to this day they use it. Although Aes / Ebu also very decent sound, but through i2s still higher resolution. USB input I warmed up and once checked into the guest, as was transport Versus MP. USB is implemented well, it is not inferior to more expensive and eminent DAC, but expected worse i2s or Aes. "

CKL

Good product for Pi!

cckk

CKKeung 發表於 2017-9-27 10:02
Can it work with the I2S inputs of Denafrips DACs?
Thanks!

CKKeung Ching，你提到Denafrips DACs, 請問你是有否聽過此牌子的解碼 ? 如有, 可否分享一下對此解碼的評價。
從網上看到它的top model Terminator 用料真係好重手, 而價錢都只係HKD33K

fishoil

CKKeung 發表於 2017-9-27 10:02
Can it work with the I2S inputs of Denafrips DACs?
Thanks!

謝謝Kenneth師兄今晚無私分享，成功用I2S to HDMI I2S Bridge 去Denafrips DAC. 以"正" 來形容。確認I2S 最高支援DSD 64 128

他說I2S直入Denafrips DAC不得了……今晚開始無心睡眠。

CKL

"他說I2S直入Denafrips DAC不得了……今晚開始無心睡眠。"

Agree as a Denafrips Pontus user via I2S on HDMI.

lincoln

請教，如果用 Auralic Aries 做音源經USB 或 coaxial 或 AES/EBU 入這 Afterdark 就可轉為l2S (經HDMl線)入支援l2S的DAC。

fishoil

lincoln 發表於 2017-10-16 19:49
請教，如果用 Auralic Aries 做音源經USB 或 coaxial 或 AES/EBU 入這 Afterdark 就可轉為l2S (經HDMl線)入 ...

這個I2S to HDMI I2S Bridge 需要用Raspberry Pi 3 (AfterDark audiophileCAS DTD) 做音源, 然後經I2S HDMl線入I2S DAC.

burdie

fishoil 發表於 2017-10-16 00:16
謝謝Kenneth師兄今晚無私分享，成功用I2S to HDMI I2S Bridge 去Denafrips DAC. 以"正" 來形容。確認I2S  ...

Fishoil兄，
Any reclocker needed before the I2S to HDMI I2S Bridge for Denafrips DAC? Was told Denafrips run in slave mode on I2S input, whereas all other inputs (USB etc) will be reclock except I2S input.

fishoil

burdie 發表於 2017-10-17 10:49
Fishoil兄，
Any reclocker needed before the I2S to HDMI I2S Bridge for Denafrips DAC? Was told Den ...

Burdie Hing,

AfterDark. Project ClayX I2S to HDMI I2S Bridge Interface can use (plug and play) and just work without any reclocker.

May be Denafrips DAC, have their own proprietary reclocker algorithms build inside the R2R DAC. I would expected the Denafrips R2R DAC has better build internal master clock and more sophisticated power supplier with their R2R design. As you may know, by looking up the pins specification on I2S HDMI, most exotic audiophile R2R DAC use their own internal master clock.

On the other hand, AfterDark. ClayX I2S to HDMI I2S Bridge Interface have different approaches. When we design this I2S bridge device, the first priority is minimize design and act as only as a "I2S Bridge" to convert pure I2S signal to I2S HDMI lvds for PS Audio standard. This product just working plug and play with the I2S standard.

How we optimized the I2S signal:

• Ensure the signal bring the shortest path from the CPU to the DAC (USB circuitry is avoided)
• The minimal hardware (avoid any complex circuitry)
• Using the shortest high quality shielded signal cable with carbon fiber shielding (avoid any I2S signal loss)
• By using a good LPS Linear Power Supply.
  

jackyming

请問是否對应泉解碼i2s hdmi輸入？

fishoil

jackyming 發表於 2017-10-20 09:02
请問是否對应泉解碼i2s hdmi輸入？

對應泉解碼i2s hdmi 輸入

clplarry

fishoil 發表於 2017-10-20 09:08
是. 對應泉解碼i2s hdmi 輸入

The Holo Spring can handle DSD64, DSD128 and DSD256 from the USB out of the Raspberry Pi3B where as the Project ClayX I2S to HDMI I2S Bridge Interface could only handle DSD128 maximum. Why not directly use the USB out of the Raspberry Pi3B for higher DSD playback?

fishoil

clplarry 發表於 2017-10-20 10:15
The Holo Spring can handle DSD64, DSD128 and DSD256 from the USB out of the Raspberry Pi3B where a ...

I2s hdmi has higher resolution in music presentation vs other digital connections. It unlock the full potential of your I2s HDMI DAC like Denafrips.

Denafrips DAC
"In the converter almost all possible digital inputs here Denafrips have decided on a maximum equip older model DAC, namely: RCA, BNC, 2xAes / Ebu, Amanero USB, 2hTOSlink, 2hi2s RG45 and i2s HDMI (lvds for PS Audio standard). My source has digital outputs Coax, Aes / Ebu, i2s HDMI. The best for me was i2s, to this day they use it. Although Aes / Ebu also very decent sound, but through i2s still higher resolution.

clplarry

fishoil 發表於 2017-10-20 10:30
I2s hdmi has higher resolution in music presentation vs other digital connections. It unlock the f ...

From the USB bridge- Singxer SU-1, the I2S output to the Holo Spring I2S input could repond music files to maximum DSD 512. Why your Project ClayX I2S can only handle DSD128 maximun?  

fishoil

clplarry 發表於 2017-10-20 15:51
From the USB bridge- Singxer SU-1, the I2S output to the Holo Spring I2S input could repond music  ...

Singxer SU-1 is a great USB DDC product with many interfaces. However, can a duplicated USB interface and extra USB/SPDIF/I2S/I2S HDMI LVDS conversion/re-processing/reclock signal at XMOS/ CPLD really improve the sound quality at PCM or DSD? At the last we turns out only need i2S HDMI to DAC.

AfterDark. Project ClayX I2S to HDMI I2S Bridge Interface is an I2S bridge product which do not have so many extra interface. Which benefit for sound quality/signal optimized on I2S for audiophile with i2S DAC.

How we optimized the I2S signal:

• Ensure the signal bring the shortest path from the CPU to the DAC (USB circuitry is avoided)
• The minimal hardware (avoid any complex circuitry or any interference)
• Using the shortest high quality shielded silver plated signal cable with carbon fiber shielding (avoid any I2S signal loss)
• External Linear Power Supply 5V DC was used to ensure clean and smooth regulated power.
• Audio Grade ELNA Capacitor was used for audiophile sound quality
• Special EMI shielding materials apply on Texas Instruments I2S LVDS driver and Digital processing chips.
• Apply 3mm Carbon Fiber board at the top layer for extra shielding for RF/EMI
  

The Denafrips R2R DAC is officially support in Advanced Real Time Kernel mode. Enjoy your i2S device in full support on both playback capability and up to audiophile sound quality.

fishoil

cckk 發表於 2017-9-28 00:19
CKKeung Ching，你提到Denafrips DACs, 請問你是有否聽過此牌子的解碼 ? 如有, 可否分享一下對此解碼的評 ...

We have received another good feedback for I2S HDMI Input on Denafrips R2R DAC. It is outperform the USB connection on Denafrips.

dekiller

From my point of view, IIS HDMI output should be built into your Pi3 products.

張東尼@FB

dekiller 發表於 2017-12-21 07:42
From my point of view, IIS HDMI output should be built into your Pi3 products.

You better ask 少帥 @TB to make such board.