他帶來了他的USB Hi-Res音樂,全是張學友unplugged版本到店,用I2S DAC試播. 那天店主使用Volumio x AudiophileCAS DTD播放張學友. I2S DAC聲音再現細膩,背景如此黑暗 深刻,如此細節自然. 相信作為 Digital Transport Device 的 Raspberry Pi 3 與 I2S DAC介面的配合亦有莫大關係.
店主同時在店裡教他設置了Volumio Wifi Hotspot進行基本設置, 用手機遙控。
上次店主借給他一對RCA電纜回家設置。最後他把所有的裝備帶回家,簡單享受音樂.
Volumio 用戶界面 x 手機Volumio Apps 遙控 x Spotify 關於技術的話題: "在cas普及之前,Dac 其實一早技術已成熟,近年只是多了hi-res/dsd/dxd format file和對應的chip,但其實最難解決的問題卻是usb 這一關,而且只係一直在進步中,因此即使有間廠造dac好掂,未必等於佢已有應對usb輸入的方案,好多時只係趕及追潮流推出市場而加上份usb入。
Many people ask the shop owner why you build a i2S DAC for Raspberry Pi 3? As you know most people is using USB DAC at the market.
The shop owner reply, he want more people to know the strength of your DAC and your bottleneck of your DAC.
Actually, I build this DAC because of one person who asked me to build for him. He was in logistic business as a driver. He wants to listen to his good music at home which store in his USB Memory . It is because of limited budget and complexity setup of the Hi-Fi, one afternoon he telephone the shop owner for solution after reading Hiendy forum, where I introduce Raspberry Pi 3 (audiophileCAS DTD) as a digital transport to play music.
The first question he asked the shop owner is wheather this DTD easy to setup and can play music with it?
He said he wants to buy a new audio system at home. Starting with speakers, Intergraded amplifiy and so on.
The shop owner reply: You need a DAC with USB connection. He reply: AfterDark. audiophileCAS DTD works without using the USB DAC, it would be great? The owner reply: Yes, but I need to do some R&D to develop them for you. The owner said to him: If you have limited budget, please wait for my good news, you can save some money.
This has been three months time, the shop owner called him again. We have developed a new product called I2S DAC, it is outperformed with the price. The shop owner asked him to come over to the shop and listen to music with this AfterDark. Palette I2S DAC Evo Edition.
The result is unbelievable.
This is the late afternoon around 5:30pm, he finished his work and drive to my shop.
He brings his USB music, full of Hi-Res's Jacky cheung to my shop and try it with my I2S DAC. We used Volumio software for playback with AfterDark. AudiophileCAS DTD. The sound is so details and the background was so dark and deep.