2018 中野春季耳機祭: Stereo Sound 旗下 DigiFi 展示豐富的音響相關套件與搭配樹莓派構成播放系統

2018.04.29 03:37PM
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日本至今還有不少真對音響 DIY 相關的刊物,而耳機祭當中, Stereo Sound 出版社旗下的 DigiFi 也在它們攤位擺放近期多本提供附錄的刊物套件,與透過這些套件搭配樹莓派等構成音樂播放系統,還有提供這些套件可用的精品級外殼。

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其中較為矚目以及與活動相關的應該是這一套耳機擴大機套件,要構成完整版本須要購買雜誌本體搭配輸出介面擴充板,否則本體就只有提供 3.5mm 單端與雙 3pin XLR 平衡兩組,搭配擴充板之後則追加雙 3.5mm 平衡、 4Pin XLR 平衡、方型 4pin (印象中是先前 ALO 隨身擴大機使用)平衡與 2.5mm 四極平衡等輸出功能,同時單端與平衡各有獨立的 OP 配置,可替換 OP 調音,號稱實力可上打 4 萬日幣等級擴大機,但標準套件(含本體加上擴充板)為 12,800 日幣,不過要注意的是圖上精美的外殼並不便宜,幾乎都是套件的兩倍價格,而且圖上這組也已經缺貨。

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另外攤位也展示不少樹莓派的應用,包括將 Pi Zero 打造成小型的攜帶播放機,以及透過各式隔離設計、獨立電源供應器、 USB 雜訊過濾器等提升音質的玩法。

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另外還針對樹莓派提供名為 DF5X 的 I2S DAC 擴充板,不同於許多平價擴充板多為 TI 的 PCM5122 或是 ESS 的 ES9023 ,這張擴充板選擇更高階的 ES9028Q2M ,同時電路板面積也相當大,應該會有不錯的抗干擾能力,電路板上還保留可擴充 LCD 螢幕的 Pin 角,只要購買螢幕並焊上就可使用。要注意的是由於 Volumio 2 還未原生支援 ES9028Q2M ,需要至官網下載驅動程式的 Zip 檔案,並透過 Volumio 2 的手動插件安裝的方式安裝驅動才能正常使用。

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