[請益] 嘗試USB電源分離 但效果未出來的木耳求助
各位大大午安 這幾天訂了兩個5V之霸 想試試看USB供電分離
期間也私信詢問許多大大 沒有一一回覆先在這裡說聲抱歉XD
前幾天東西來了 便很高興的測試 但木耳再次擊沉了我
測了一下發現 冏 我聽不出來差異
先說我之前的接法
別的房間市售延長線--接電腦--露天usb分離線------訊號端接hub--supra貼5v--192dac
| |
| --電源端接hub的任一usb孔
|
--hub原場變壓器--hub dc端
壁插孔1----小黑線---192dac---耳機孔hd650
也許是一開始感到192的威力 我聽得算很高興
大致上最明顯的差別 大概是微動態吧?
讓整個細節變鮮明 以及烘托出整個空間音樂的場分佈(原諒我想不出合適的形容)
買了2個5v之霸後 一個上壁插孔2 另一個沒得插只好插到市售延長線
變成
別的房間市售延長線--接電腦--露天usb分離線------訊號端接hub--supra貼5v--192dac
| |
| 電源端接5v之霸
| |
--5v之霸--hub dc端 |
|
壁插孔2----5v之霸----------------------------|
壁插孔1----小黑線---192dac---耳機孔hd650
但聽感上沒有變好 經過這兩天再確定後 似乎比本來差
首先是音場的上半段消失了 一些高音都聽不到了
再來人聲變厚 但變混濁
低頻量感變多 但聽不太出層次
後來我測了一下 拔掉市售沿長線的5v之霸 也就是hub不供電
在我這邊 聲音有變乾淨 音場上半部有回來
但感覺人聲靠前也變稍微大之一點
另外就是略略有點高音刮耳的氣音...
我猜了些限制住usb供電分離的優勢的原因 還望大大幫忙看看有沒有遺漏或錯誤之處
1.延長線的電不理想? 但我不確定為什麼一開始原廠變壓器插在上面給hub供電
效果還好過 後來5v之霸插壁插 提供usb電源
2.5v之霸終究和線性電供有差?
3.我壁插的市電太差?
4.還沒run好正雖聲?
大大有空的話再幫忙診斷一下xd
謝謝大大
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