2018 中野春季耳機祭: MJ 無線與實驗雜誌的 MJ-DAP01 高音質播放機電路板,採用 ROHM 最新控制晶片、數位類比分離電源

2018.04.28 10:38PM
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Electronic engineering, Computer hardware, Electronics, Electrical network, Electronic component, Electronic Musical Instruments, Electronic circuit, Electrical engineering, Computer, Central processing unit, electronic engineering, electronic engineering, technology, electronics, electrical network, computer hardware, electronic instrument, personal computer hardware, machine, electronic device, circuit prototyping

日本到現在仍有許多針對發燒友 DIY 的電子與實驗刊物,這次在耳機祭當中,日本誠文堂新光社旗下無線與實驗雜誌就展示他們近期推出的高音質音樂撥放器電路板 MJ-DAP01 ,這款電路板只要插上電源就可讀取 USB 隨身碟內的各類高音質音樂檔案,透過小巧的 LCD 與機身上的按鈕進行播放。

TV Tuner Cards & Adapters, Electronic engineering, Computer hardware, Electronics, Microcontroller, Electrical network, Electronic component, Motherboard, Electronic circuit, Network Cards & Adapters, electronic engineering, electronic engineering, technology, electronics, microcontroller, computer hardware, electronic device, electrical network, computer component, motherboard, personal computer hardware

MJ-DAP01 最大的特色是搭載日本 ROHM 半導體針對音樂播放所開發的 BM94803AEKU 主控晶片,這是一款具備主控與數位訊號處理高整合晶片,可處理各類的音樂檔案格式,而解碼晶片則由 ESS 的 ES9018K2M ,根據官方的介紹,未來可透過韌體升級方式增加對檔案與功能的支援,不過現階段僅提供讀取 USB 儲存裝置檔案的能力,但能夠解 DSD 5.6MHz 格式,能支援到 24bit 192kHz 的 PCM 檔案。

Microcontroller, Electronic engineering, Computer hardware, Electronics, Electronic component, Electrical network, Motherboard, Central processing unit, Electronic circuit, Electrical engineering, electronic engineering, electronic engineering, electronics, microcontroller, circuit component, computer component, technology, electronics accessory, electrical network, circuit prototyping, computer hardware

Breadboard, Electronic engineering, Electronics, Electronic Musical Instruments, Electrical engineering, Electrical network, Engineering, electronics, technology, electronics, electronic engineering, circuit prototyping, electronic instrument, electrical wiring, electrical network, circuit component, electronics accessory, breadboard

Audio, Electronics, Sound, Electronic engineering, Electronic Musical Instruments, Electrical network, Electrical engineering, Engineering, electronics, electronics, technology, audio equipment, electronic instrument, electronic device, electronic engineering, audio, sound, musical instrument, electrical network

可別因為外觀看起來簡陋就小瞧它,在架構設計方面仍相當用心,這張電路板具備 3.5mm 耳機輸出與同軸 SPDIF 輸出,且電源供應採用數位與類比兩路獨立,須個別輸入 5V 與 6V 兩組電力,故要作為隨身播放機,則要個別搭配 3 顆三號電池與 4 顆 3 號電池兩組電力,數位與類比分離也是為了確保電源訊號不受干擾,且避開單一電源升降頻可能發生的音質劣化。

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