最後，店主建立了發燒友香港市場上獨一無二的Raspberry Pi 發燒友版。顧客總是對店主說，我應該早些使用AfterDark。audiophileCAS DTD，為我節省了在CAS上投資PC / MAC的成本。這款發燒音響系統絕對是市場上獨一無二的Digital Transport Device。
It was a great week today, the shop owner notices people around talking more about Raspberry pi3. The shop owner this week will talk about the core product of AfterDark x Raspberry Pi3.
The shop owner try to start the small home business at stretch. Therefore, the shop owner start to sell the 2nd hand US inlet socket in Hong Kong in 2017.
Customer always ask me why start Raspberry Pi business? What is your goal?
Started with some retained profit, we try to make some product in different approach. The shop owner always believe there must be some niche market for this sector. We tried to think of some innovative product together with unique "Hong Kong Made and Design". People will be really appreciate if there is some kind of innovative, passion for develop new product.
One day the shop owner meet a friend who is working in I.T. sector working in Prince building Central. He is audiophile with his headphone, one day he shows me the Raspberry Pi 3 audio system in transparent arylic case where he made in his boss room.
He said: This pi 3 sounds so good in sound quality and very dense details, you should have try to build one for your home.
The shop owner said: Ok, Let me buy the parts from vendor. It was almost 1 months. I just found some 2nd hand Raspberry Pi 3 on Review33. Lets start my research and development based on Pi 3, starting with Raspberry OS softwares. Raspbian OS, NOOBs, Runeaudio, Volumio, MoodeAudio, KODI OSMC, BerryBoot.
The shop owner said: Oh, the software install is too complicated for entry user. The shop owner want to develop something is easy to use and plug and Play. So that people can purchase and enjoy at home.
The software tesing goes on everynight for 2 weeks. The shop owner finally confirms to use one MicroSD card to dual boot on 2 OS on startup with NOOBs OS loader. User can boot Runeaudio OS and KODI OSMC on startup screen individually.
the shop owner start to listen to music with Raspberry Pi 3, the result is shocking. The music is so smooth and sound amazing. Beleived me, the shop owner was testing the Raspberry Pi 3 in bared on the anti-stick working platform.
audiophile in CAS, the shop owner start to mod and design the case with audiophile sound tuning in mind.
The shop owner start to build his propertiary Hong Kong design, believed that we will be the first one to use this industrial EMI shielding material on Raspberry Pi 3. The result is the sound quality was greatly improved after we apply all the tweak on sound tuning.
Later on, the shop owner beleived the power supply plays a very important part of sound quality, it is amazing that we tried 5 different Linear Power Supply in the market, they all sounds very differently due to the filter or electric regulator they used inside. We tried and perform listening test, we come up with one LPS which sounds very nice in Raspberry Pi 3 platform.
Afterthat, we perform MicroSD card listening test, again they all sound different. From consumer grade, to industrial grade. Finally, we are very satisfy the sound performance with industrial MLC, the charity and details is just excellent and cannot compared with consumer grade, although this cost 5 times vs consumer grade one.
Finally, we build a audiophileCAS version which is unique in the audiophile HK market. People always said to the shop owner, I should have using AfterDark. audiophileCAS earlier, to save me the cost of investing PC/MAC on CAS. This audiophileCAS is absolutely the reference audio render and digital transport in the market.
Technical Insight: Sound quality between Linear Power Supply and Switching Power Supply on Pi 3? LPS specifically speaking, more and more performing abundance, high frequency frizz less, the overall more balanced, as far as I'm concerned, subjective thinking is a good thing, and it is clear that the lip-tooth sound is more pronounced, swallowing sound is less viscous, and emotionally heartier.
Line ups and downs of the line is very gentle, with a moderate extension of both ends, the suppression of the exchange of frustrated power is more obvious, richer sense of speed and impact, both ends of the extension is more excellent.
On the other hand. Switching Power Supply, the high frequency of electric wire is brighter than the electric wire but does not scratch the ear, and the low frequency is more than the electric wire and has a clear level.
Mentioned earlier guitar plectrum, a wave of low-frequency weight, sense of hierarchy, high-frequency brightness,
The resonance of the piano body articulation, the recognition of different pitch between the strings and the separation of vocal and instrumentalities.
