DAC + Active vs Amp + Passive

nicknick

JjohnN 發表於 2013-5-4 16:43
今日入手 Mordaunt-Short 5.1 set 白色 ($5xxx)

打算配Onkyo 626

av amp方面建議轉到 “高清影院與硬件討論區” 發問，那邊有更多對av amp更有豐富經驗的師兄可與你分享。這區都是玩兩聲道為主。

ANWKLO

Wilmer威馬 發表於 2013-2-9 20:43
DAC，好多「貌似」有前級 o既 DAC，特別係連 headphone amp 果 d，就算上到萬元級，7、8 成個 pre-out 都只係經過個 volume 掣，只係有得調，好聽 d 就叫「衰減式無源前級」。

請問DC-1是否有前級既DAC還是叫「衰減式無源前級」呢  以下是廠方的描述:  

Full Preamp and Headphone Amp Functionality

With the DC-1’s inherent performance and capability, we could have stopped there. Instead, we added full preamp functionality with remote control and precision level adjustment. Each channel of the DC-1 is controlled by its own Muses 72320 precision digitally controlled analog ladder volume control, operated in our proprietary dual gain mode, for perfect channel tracking, low noise and distortion, and 0.25dB resolution. You can easily use the DC-1 as a dedicated preamp for a completely digital system.

We also added dual headphone outputs, each powered by its own independent BUF-634 high-current low-distortion output buffer. Both headphone outputs are driven separately by our proprietary driver circuitry, with very low output impedance and flat, load invariant frequency response. This means the DC-1 drives a wide range of headphones accurately, making it a complete solution when used as a dedicated headphone listening system.

Wilmer威馬

ANWKLO 發表於 2014-4-20 10:52
請問DC-1是否有前級既DAC還是叫「衰減式無源前級」呢  以下是廠方的描述:  

Full Preamp and  ...

冇正面講喎。。。。

kevin1107

我本來都預2萬買有源,去過曾福聽 solo 6be,個現場環境太差....聽左5分鐘即走
但有日去左原音聽elac air 403 依隻小喇叭真的好正! 可惜超左成半budget
我仲考慮如果買focal,  前級搵個英國牌子都無咩問題
但elac 個聲 我想問有冇前級,XLR線 可以做到爽快 同薄聲D

ANWKLO

Wilmer威馬 發表於 2014-4-20 12:21
冇正面講喎。。。。

Manual 這樣講:

Dual Muses 72320 digitally controlled analog ladder volume control chips.

The volume for each fully differential channel is controlled by a separate Muses 72320
precision volume control IC, operated in our unique and proprietary dual gain control
mode

(by simultaneously controlling both signal level and the gain of the gain stage itself,
this technique optimizes the signal handling at various gain levels to achieve the
absolute best noise and distortion performance at any given setting)

ANWKLO

得到外國兩位網友回復証實DC-1並不是「衰減式無源前級」, 今晚試了DC-1用作前級接Mono去喇叭, 效果唔錯

karmayim

kevin1107 發表於 2014-4-20 13:55
我本來都預2萬買有源,去過曾福聽 solo 6be,個現場環境太差....聽左5分鐘即走
但有日去左原音聽elac air 403 ...

師兄，我之前用elac 244be 之後而家轉玩unity audio black rock 主動喇叭,都係 elac 單元，都啱你budget, 你試下去聽睇下啱吾啱口味咧！

Wilmer威馬

ANWKLO 發表於 2014-4-20 21:25
得到外國兩位網友回復証實DC-1並不是「衰減式無源前級」, 今晚試了DC-1用作前級接Mono去喇叭, 效果唔錯 {: ...

confirm 到就好，因為我都有 download user manual 睇，但係個 specifications 冇講 analog input 個 spec 有冇或幾大 gain，analog input = line amp，所以唔知有冇 gain，而一般 manual 嘅 product description 都包含唔少 sales talk（你引用果段只係廠點 config 粒 muses，粒 muses 内部有 opamp，active 定 bypass 同有冇 line amp 唔一定有關，呢度屬於 circuit design 深入 topic，就唔獻醜），所以通常都係無視，唔會信，只係睇 specifications 一欄。

lamhokin

其實，搞左你D file先啦，最簡單但有效既方法
若聽吾出有損檔案同無損檔案既分別米可以慳翻

ANWKLO

Wilmer威馬 發表於 2014-4-20 23:30
confirm 到就好，因為我都有 download user manual 睇，但係個 specifications 冇講 analog input 個 spe ...

馬爺, 唔該晒

的網友同Emotiva Administrator 講得好深入 (對小弟來講), 唯有信住佢地乎先.

現在覺得如果只玩CAS, 用有Preamp的DAC接去有源喇叭最簡單, 可能都會好聲.