Xitel 發燒級 USB音效卡

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[原裝 Xitel] Xitel MD-Port AN1 發燒級 擴大機專用 USB音效卡 USB DAC 音色音質HIFI享受.... 榮獲 SONY採用的 USB音效卡(USB DAC)!

Manufacturer: Xitel Pty. Ltd.

MP3-Streamer is a simple way to significantly improve the audio performance of your PC or Mac. Connect your computer to your stereo in a matter of seconds and enjoy all of your digital music through the best sound system in the house!

窮人卡啦Ok專用準發燒級音效卡.....飛利浦 UDA1321/20位元採樣IC USB 即插即用晶片

榮獲 SONY肯定的USB音效卡!

☆電腦+USB DAC(本機) 取代 CD唱盤成為音響系統的主要音訊來源，電腦播出的聲音不一定比CD唱盤差，這樣子..........就可以省下買萬元CD唱盤的$

(萬元CD Player: DENON DCD-1500AE, MARANTZ SA-8003...)(基本知識:音響的構成 , 一套學生可以負擔的音響)

飛利浦 UDA1321參數：
總諧波失真:小於0.005%
聲道隔離度:大於90分貝
數位精度:20位
兼容格式:MP3, MP3Pro, WMA, RealAudio, LiquidAudio, WAV, AAC音頻及其他格式符合您電腦的媒體播放
編碼:8至320Kbps
模擬輸出:1V有效值,線路輸出
隔離:電路完全隔絕電磁輻射與一般電腦音響

PC-LINK配件= Xitel MD-Port AN1 USB音效卡

註:DAC=數位類比轉換器（Digital to Analog Converter）。有越來越多的人...習慣用電腦當訊源...但是一般主機板內建的音效...效果尚可
USB DAC是一個很好的解決方案...之前的經驗...也證實了 USB DAC 有相當優異得表現...比起內建的音效好太多了USB DAC 有相當優異得表現...比起內建的音效好太多了 (PCM2902...是 TI 出產的一顆USB數位訊號接收晶片)

*問題:如何把電腦和音響擴大機完美整合在一起?
回答:我們可以用幾十元的3.5mm轉RCA的類比訊號線，把電腦連接在傳統音響(擴大機)上面聆聽，這樣就不需要買DAC了，雖然有點「陽春」，但這樣也算把電腦和音響整合在一起，只是如此陽春便宜的連接，音質不但極普通，而且常伴隨惱人的PC吵雜聲(雜音主要是由於主機板上的音效晶片與電路Layout問題所導致)，所以，發燒友絕不是如此連接電腦與音響擴大機，而是購買DAC來把電腦和音響擴大機完美整合在一起。也就是說，對音質更為講究，用USB、Firewire、S/PDIF……等等數位介面，把PC數位音樂訊號輸出時至耳機或擴大機，享受純淨發燒級感人音質時，你就需要一部外接式DAC了。而USB DAC就是透過USB介面來與電腦連接的外接式DAC。

接擴大機專用（去底噪聲）準發燒級USB音效卡

注意：本音效卡使用於高檔高阻抗耳機時，因阻抗設計差異問題，故可能會較不理想。

>>這是庫存品,無外包裝(每一個都有獨立的序列號),外表有些黃色舊斑,外觀稍有磨損，顏色色澤較差，但是保證是全新品,不介意才購買!

>>DIY 卡啦Ok 電腦要接擴大機,其實主機板上內建音效卡就夠用,但是如果有煩人底噪聲音，那就需要這個較高檔準發燒級的 Xitel USB音效卡，來代替功能普普的內建音效卡！將本USB音效卡之3.5mm立體聲孔以線材轉成2個AV公頭，AV公頭再插入擴大機上，就可發現，煩人的哼聲已經大大降低，從此，歡唱無雜音。

NT370 (Xitel MD-Port AN1 發燒級 擴大機專用 USB音效卡 x1 + USB 線一條)

產品服務電話 0935260808 netskys@yahoo.com國定例假日可面交, 但是請先來電相約時間。週一至週五請 11:00-12:00,16:30-17:00,18:00-23:30 來電, 面交出發前請先務必撥打電話相約時間。（如不通，則表示我位於收訊不良處，請重播或留言，謝謝！）面交地點:台北市民生東路2段吉林路口 ,假日:捷運行天宮站,光華商場,捷運雙連站

(點圖放大)台北市民生東路2段與吉林路路口:面交第一地點

匯款帳號 : 請匯款入 : 中國信託公館分行　銀行代號 : 822 帳號 : 347531103401

*本產品出貨時是工廠綠色包裝---沒有漂亮精美的盒子包裝/但有漂亮的價格與內容請可以接受者才購買,將只用一次就變成垃圾的漂亮盒子包裝的費用省下來...為地球盡一分力.

【商品介紹】

1.送USB線

2.WIN XP無需驅動，系統自動識別，即插即用

WIN 7系統下需驅動

happysteak2010(175)
Windows 7在內的所有微軟32/64、試過可用，音質不錯，可用驅動程式6001647799(是C-Media驊訊電子的USB驅動程式)或是 Ploytec USB Audio ASIO driver驅動程式,可是Ploytec USB Audio ASIO driver重開機會出現問號，這時再次安裝USB驅動程式就可以了..........花蓮熱心網友提供

【使用方式】

1.以所附USB線插入本機，另一端接PC，也就是將本機當成音效卡,之後你電腦上的主音效卡將暫不使用.Windows 2000、windows xp均隨插即用，不需要驅動程式，WIN7（32位、64位系統）需驅動，.>>請至google下搜索"6001647799"or"Ploytec USB Audio ASIO driver驅動程式"USB插入　電腦後，系統自動判定為 "USB AUDIO Codec" 音效卡.("6001647799"or"Ploytec USB Audio ASIO driver"驅動程式)

2.此時最好以公認最佳轉CD存至PC的抓取 WAV音軌軟體:EAC（Exact Audio Copy），來轉換音樂檔，把你目前所有的 CD收藏都轉成少失真率之電腦檔案，即無損失壓縮檔:如
　Apple Lossless Audio Codec（ALAC）
　Free Lossless Audio Codec（FLAC）
　Windows Media Audio Lossless（WMA），這就是所謂 rip CD這個過程。然後以播放軟體 Foobar2000（強力推薦，免費且外掛超多）播放，通過本產品USB DAC輸出，獲得較佳聆聽音質。
　(不想轉檔？那就上網聽網路廣播之數位音樂)(其實Windows內建的Media Player就具備Rip CD的功能，操作簡便且轉檔快，如果您不想浪費太多時間在轉檔這件事上，就用它）。

[原裝Xitel] 發燒級USB外接音效卡音色超好 HIFI享受

本產品為未使用過的，因為運輸和保存的原因，外觀稍有磨損，顏色色澤較差，但是，
絕對原裝，每一個都有獨立的序列號，沒有包裝。

XITEL是美國著名的音頻外設生產廠家，產品定位於高端用戶，品質優良、做工考究；該款USB音效卡採用飛利浦公司的20Bit音頻解碼晶片，搭配優質的外圍零件，沒有設計太多不必要的功能，對音質輸出影響降到最低，構成一個專業HiFi級的純音頻輸出系統，標準的3.5立體聲插座，可以直接有源音箱，家庭音響系統等，讓視聽感受大大提高。

美國出名電腦音頻外設生產廠家 XLITE為索尼製造的 SONY MZ-R700PC MD機原裝套件 MD-PORT AN1 USB 外置音效卡, 採用飛利浦UDA1321/20位元採樣IC USB 即插即用晶片，音質超好，有銀色和白色兩款，均為沒有使用過的新品，但是因為是工業包裝，所以在運輸中表面稍有磨損。

*本Xitel MD-Port AN1 USB音效卡,是SONY MZ-R700PC的標準配件之一,

可以經由Xitel MD-Port AN1 USB音效卡將PC音訊傳入SONY MZ-R700PC中,以便錄音

擁有PC-LINK套件的MD機——SONY MZ-R700PC使用感受
　轉自： 51digi.com

　　作者：ben

　　很早很早以前就已聽說過SONY、SHARP的MD機都擁有PC-LINK配件（選購），可通過USB口接駁PC錄音，可一直就是只聞其聲，不見其人。直到當我拿到SONY MZ-R700PC後，我才對PC-LINK有所瞭解並有了新的認識！

　　其實MZ-R700PC與MZ-R700是一樣的，只不過就是多了一份PC-LINK套件，當然主機上還有「MZ-R700PC」的字樣以作區別，但實質上是一樣的，其它配件也是一樣，也就是說兩者區別僅在於那套PC-LINK套件上罷啦！而PC-LINK套件又分模擬和數字兩種，其實和音效卡一樣，就是一個是模擬輸出，一個是數字（光纖）輸出，而其型號的叫法也有所不同，帶模擬輸出PC-LINK的型號就在後面加上「PC」字樣（如MZ-R700PC、MZ-G750PC等）、而帶數字輸出PC-LINK套件的型號就在後面加上「DPC」字樣（如MZ-R700DPC、MZ-G750DPC等），「D」字為用講就是DIGITAL的意思啦！

　　因此今天的主角應該是這套PC-LINK而不是R700PC本身。這套PC-LINK套件由USB連接線、一對一的模擬過錄線及連接盒（MD PORT AN1）組成。而連接盒一頭是USB接口，另一頭則是模擬輸出口（如果是數字套件則是光纖輸出口）。接上線後，電腦立即找到新設備——MD PORT AN1，接著按下一步讓WINDOWS自己搜索驅動程序，無需另裝軟體，WIN98/ME/W2K已自帶驅動，W2K更直接自動安裝，接著系統會自動添加「USB人機接口」（W2K下是USB人體學輸入設備）、「USB AUDIO DEVICE」，安裝完成後如果是WIN98則需重新啟動系統，W2K則不必，馬上即可使用。

　　接著打開控制面板的多媒體屬性，你會發現播放那欄多了一個「USB AUDIO DEVICE」設備，將其選中首選設備，接著記住把CD-ROM屬性中的「將此CD-ROM設備啟用數位CD音頻」選中（否則音頻屬性中沒有CD那一項，將無法錄製CD），之後打開右下角的小喇八（音量控制）你會發現多了一張音效卡（稍後解釋），有主音量、WAVE、CD、MIDI等三項設備可供調節音量。之後你電腦上的主音效卡將暫不使用，而通過這個USB AUDIO DEVICE作輸出。

　　接著當然是通過此PC-LINK錄音啦，雖然通過USB口接駁了PC，但是你千萬不要誤會啦，並不是像MP3 PLAYER那樣將歌曲直接下載到MD機中，MD的錄音方法並沒有改變，同樣是一邊播放一邊同步錄音的，只不過不是接音效卡，而是接這套PC-LINK而已，可以這麼說：沒有音效卡也能錄音。

　　錄音中也可以監聽，其它操作和原先的錄音並無區別，雖然通過模擬線錄音，但效果也算不錯，無背景雜音。但是也就在此我發現了PC-LINK的最大缺點，因為其用的是USB接口，通過CD-ROM的數據線將音頻信號（CD-ROM根本無需接音頻線或SPDIF OUT，也就是說根本用不上）經IDE總線轉至CPU軟解，然後再由USB口輸出，那麼系統的軟體運行勢必造成對音頻回放的影響，相信用過AC97軟音效卡的朋友也應該清楚這一點。當錄音中途我償試運行其它軟體時，對音頻的回放造成非常大的干擾，像打開音頻屬性一項都會停頓一下，當我打開3DMARK 2001時就更不用說啦，簡直跳音跳得無法錄音，看來錄音中最好是什麼都不要動啦，否則會嚴重影響錄音質量。這不得不說是PC-LINK的最大缺點啦！也可以說是軟音效卡的通病。

　　PC-LINK = USB外置音效卡？

　　看到以上的介紹，你是否覺得這種PC-LINK不就是一個USB外置音效卡嗎？沒錯，其實說白啦這種PC-LINK套件本身就是一個USB音效卡，當揭開PC-LINK神秘的面紗後發覺其原來只是一個USB外置音效卡後我也覺得有點上當受騙的感覺？而且其實際使用意義並不大，尤其是模擬輸出這種PC-LINK，試想一下目前誰家的電腦沒有音效卡呢？用的著花這麼多功夫轉成USB再轉成模擬輸出嗎？而且加上受系統的干擾影響嚴重，因此實際應用並不是很大。而數字（光纖）輸出那種PC-LINK倒是非常適合沒有光纖輸出的用戶使用，可惜價格是模擬輸出的一倍（約￥600元），這價格完全可以買張SB LIVE+光纖子卡啦！其實按照以上的推論，大家大可以買張帶光纖輸出的USB音效卡當PC-LINK用，只不過目前市面上好像還沒見到過罷啦。

　　目前SONY MZ-R700PC（歐洲行貨）的報價約￥1880元，比MZ-R700貴約￥2XX元，剛好就是PC-LINK套件的價格，日前SONY在國內的MD展示會上也有此款PC-LINK展示，據SONY的人員介紹模擬輸出的PC-LINK約售￥3XX元、而數字輸出的PC-LINK則售￥600元，今年內將在國內進行零售。

　　總體來說，SONY MZ-R700PC也並不是很貴，畢竟多了一套PC-LINK，但是也就多了一塊USB外置音效卡，可以說完全是沒有必要的，除非帶數字輸出的PC-LINK，我想對於沒有光纖輸出的朋友來說還有點作用，希望SONY能推出直接可以將MD當活動硬盤用的PC-LINK，那才是我們MD發燒友所最期望的！

*飛利浦是全球放大器產品的領導廠商，產品組合包括各種具備高效能供給電壓漣波去除率 (ripple rejection) 功能的高傳真 (high-fidelity)音訊放大器，為 LCD 屏幕與多媒體應用帶來完美的音質表現。透過我們的 UDA1321為 LCD 屏幕內的數位音訊模塊帶來 USB 連接技術的優勢，實現 USB 音訊處理功能。UDA1321 是一個 USB 音訊數位模擬轉換器 (DAC)，而 UDA1325 則結合了 ADC/DAC 與數位信號處理器 (DSP) 功能。在晶片上整合了所有必需的模擬與數位功能，透過 USB 傳輸帶來高質量的音響效果。

使用Enigma的第一張專輯西元1990來測試這個音效卡，低音相當的飽滿並且有彈性，久聽也不會感到厭倦，高音非常的清晰，而對於中音區和人聲，則還原的非常好，確實是一款發燒的外接音效卡,現在我們已經完全拋棄了板載的音效卡而使用這個外接音效卡.

問題:為何要買USB DAC?
回答:就是希望可以省錢。要聽到CD中真正的細節，享受發燒純淨音質，必需花大錢買音響用CD player，但是，不是人人有萬元CD Player，而電腦卻很容易找到，用電腦加USB DAC取代CD唱盤成為音響系統的主要音訊來源，電腦播出的聲音不一定比CD唱盤差，這樣子，就可以省下不少錢，而且也更方便。DAC 這一詞指的就是「數位轉類比轉換器」，在電腦上一般指的就是音效卡，電腦是全數位處理的，但耳朵聽到的聲音是類比的，所以很自然的就會需要 DAC 這樣的東西，當然也是直接影響音質好壞的重要元件。例如目前公認PC最好用抓音軌軟體之一的EAC（Exact Audio Copy），只要在連上網路的環境下，放入CD它就會自動抓取CD曲目資訊，解析度高於CD，也就是16bit / 44.1kHz以上的音樂檔案，可透過付費下載或購買資料光碟取得，目前已有一些國外網站與唱片公司開始提供此項服務，像是HDtracks、Linn、Chesky、Reference Recording，規格高一些的USB DAC都可以支援高解析音樂檔案，像是88.2kHz或是更高的176.4kHz與192kHz，你有機會體驗到近似錄音室母帶的聲音表現。
當然，用幾十元的3.5mm轉RCA的類比訊號線，把電腦連接在傳統音響(擴大機)上面聆聽，這樣就不需要買DAC了，雖然有點「陽春」，但這樣也算把電腦和音響整合在一起，只是如此陽春便宜的連接，音質不但極普通，而且常伴隨惱人的PC吵雜聲(雜音主要是由於主機板上的音效晶片與電路Layout問題所導致)，所以，發燒友絕不是如此連接電腦與音響擴大機，而是購買DAC來把電腦和音響擴大機完美整合在一起。也就是說，對音質更為講究，用USB、Firewire、S/PDIF……等等數位介面，把PC數位音樂訊號輸出時至耳機或擴大機，享受純淨發燒級感人音質時，你就需要一部外接式DAC了。而USB DAC就是透過USB介面來與電腦連接的外接式DAC。

問題:USB DAC其實就是音效卡，那何必多買一張音效卡？
回答:如果你只是接一般電腦喇叭聽音樂，可能聽不出大差異。但是如果你改用高檔耳機或擴大機接PC，那內建音效卡的缺點就可能聽出來，音質不但極普通，而且常伴隨惱人的PC吵雜聲(雜音主要是由於主機板上的音效晶片與電路Layout問題所導致)，筆電搭配耳機時候，耳機傳來嘶嘶嘶雜音的經驗，尤其是滑鼠滾輪，鍵盤甚至軟體操作的時候
。所以，發燒友絕不是如此連接電腦與音響擴大機，而是購買DAC來把電腦和音響擴大機完美整合在一起。也就是說，對音質更為講究，用USB、Firewire、S/PDIF……等等數位介面，把PC數位音樂訊號輸出時至耳機或擴大機，享受純淨發燒級感人音質時，你就需要一部外接式DAC了。而USB DAC就是透過USB介面來與電腦連接的外接式DAC，也是發燒級音效卡的一種。外接DAC無論在解碼晶片、電源供應與類比放大等方面，製作和設計都比一般音效卡好得多，也是提升電腦音樂播放的利器。用電腦數位輸出最「流行」的方法是透過USB連接，因為幾乎所有的電腦現在都配備了USB介面。

http://xpdrivers.com

文‧U-Audio編輯部
假設你已經擁有一套完整的音響系統，家裡也早就有電腦了，怎麼把這兩樣東西「送做堆」，整合成一套優質的「電腦音響」？我們整理了十項新手常見的問題，讓你輕鬆進入電腦音響的世界。
Q1、USB DAC是什麼？我真的需要嗎？
DAC是數位類比轉換器，老音響迷拿DAC搭配轉盤組成高階數位訊源。透過電腦聽音樂時，其實沒有外接DAC一樣可以聽，電腦主機板幾乎都已經整合DAC晶片了，但電腦喇叭的聲音實在薄弱得可憐，我們可以用3.5mm轉RCA的類比訊號線，把電腦連接在音響上面聆聽，這樣就不需要DAC了。可是如果對音質更為講究，用USB、Firewire、S/PDIF……等等數位介面，把數位音樂訊號輸出時，你就需要一部外接式DAC了，而USB DAC就是透過USB介面來與電腦連接的外接式DAC。喔，我們忘了提醒，其實許多AV環繞擴大機也可以充當外接DAC的，回去翻翻AV擴大機的手冊，說不定不用花錢馬上就可以動手玩外接DAC了！

(透過藍芽也可以傳輸高品質的音樂檔案，目前Chord有推出能支援藍芽傳輸的USB DAC)

Q2、我剛開始想把電腦和音響整合在一起，要怎麼開始？

有人說萬事起頭難，不過把音響和電腦結合起來玩，畢竟是要「玩」，不要當成做學問一般，嚴肅得不得了。基本上只要有一部電腦，一套音響，大概就可以開始玩了。當然，有人玩得簡單，耳機接電腦就可以享受音樂，但也可以玩得很講究，從電腦硬體、播放軟體、CD RIP、USB線、USB DAC一路到音響系統，樣樣講究。到底要怎麼開始？其實，準備好電腦就可以開始了！

以前人家說，玩黑膠唱片除了是聽覺享受，也是一種全手動操作的樂趣，以後恐怕連放CD唱片也是如此。

Q3、我需要什麼樣的電腦來播放音樂？

基本上只要開機正常的電腦，就可以拿來播放音樂（這不是廢話嗎）。目前幾乎所有的電腦都配備了音效卡，這也是用電腦聽音樂的「基本配備」。

(RR唱片公司已推出高解析音樂光碟，其實就是DVD-R資料光碟，裡面存有24bit / 176.4kHz音樂檔案，這是最接近錄音母帶的聲音)
音效卡上面有耳機輸出，買一條3.5mm耳機輸出轉RCA的訊號線，接到擴大機上面的輸入端子，雖然有點「陽春」，但這樣也算把電腦和音響整合在一起。

從3.5mm轉RCA是利用電腦的類比輸出，不過一般電腦的音效卡等級大概不會太好，所以從電腦「類比」輸出只能算「入門」，進階的作法是用電腦的數位輸出，送到外接DAC，這類外接DAC無論在解碼晶片、電源供應與類比放大等方面，製作和設計都比一般音效卡好得多，也是提升電腦音樂播放的利器。用電腦數位輸出最「流行」的方法是透過USB連接，因為幾乎所有的電腦現在都配備了USB介面，但其他數位介面也一樣行，像是Firewire（錄音室很愛用）、S/PDIF、AES/EBU、HDMI、乙太網路線……，甚至Wi-Fi無線傳輸或藍芽都行。咦，有人說他用的是筆記型電腦，沒有數位輸出？檢查一下，筆電現在有很多製作數位類比複合輸出端子，那個3.5mm耳機輸出孔，其實也是光纖數位輸出S/PDIF，買個轉接頭就可以用了。

Q4、有人說Mac比較適合聽音樂，但我用PC已經很多年了，這兩種電腦拿來聽音樂差別很大嗎？

有人非Mac不用，有人認為PC才是王道，其實編輯部為了這個問題，去年買了四部電腦，包括兩部Acer和兩部Mac，大家對Mac和PC誰比較好的問題，也沒有共識，原因是各有各的好，沒有「決定性」的因素可以說誰比較好。實際上OS X和Windows兩者是不一樣的作業系統，使用上巧妙也有不同，以下我們就概括性說明Mac和PC之間用來聽音樂的優缺點。

◎Mac的優點

1. 數位輸出設定較簡單，某些DAC在PC上須安裝驅動程式，Mac卻不用，隨插即用
2. iTunes隨機安裝在OS X裡面，不需下載立即可用
3. 搭配iPod Touch或iPad使用遙控軟體（例如免費的Remote）非常方便
4. 中毒的機率較低，下載音樂「瞎米嚨姆驚」
5. 直接內建S/PDIF光纖輸出，不需單靠USB輸出
6. Airport搭配Mac是很好的「無線傳輸」聆聽方式
7. 支援Class 2音訊，USB可輸出24/192高解析數位訊號，昇頻切換也很容易
8. 封閉式作業系統，比較不容易當機

◎Mac的缺點

1.封閉的系統，升級調整與配件相對有限
2.支援FLAC的資源非常有限
3.雖然有外掛程式，但每每iTunes升級後，常要等一段時間外掛才會升級，造成使用上困擾

◎PC的優點

1.開放系統，硬體搭配任君選擇
2.多樣化的播放軟體，所有音樂檔案格式都有相對應的豐富軟體支援
3.眾多播放器材（BD、DVD、PS3、Xbox……）都可支援Windows作業系統
4.智慧型手機也可當遙控器，遙控應用軟體眾多
5.可加裝Kernel Streaming、ASIO、WASAPI等軟體跳過Windows內部音訊處理協定，提高數位音樂輸出準確性，免除數位音樂訊號受到Windows作業系統污染

◎PC的缺點

1. 系統設定相對困難，某些外接硬體需要安裝驅動程式
2. 開放式系統可採用各式各樣硬體搭配，但安裝後效能最佳化的專業能力需求較高
Q5、我該選擇什麼樣的音樂播放軟體？

如果你是Mac用家，那麼OS X內建的iTunes是最佳選擇。PC+Windows用家其實作業系統內也已經預先裝上了Media Player，這個播放軟體其實也不差，但如果要讓聲音更好，還有許多更好的選擇，而且「不一定要花錢」！以下是我們列舉公認不錯的播放軟體：

◎Windows介面
Foobar2000（強力推薦，免費且外掛超多）
Windows Media Player/ Center（作業系統內建）
iTunes（雖是敵手Apple做的，但在PC也不錯用，只是依然不支援FLAC）
J.River Media Center（歐美超流行，需付費，可下載30天免費試用版）
MediaMonkey（本是為APE格式設計，現在也格式通吃了）

◎Mac介面
iTunes（OS X內建，介面簡單好用，資料庫管理功能不錯，而且一直在更新進步中）
VLC（老牌播放軟體，影像聲音通吃）

好吧，我們承認播放軟體確實很多種，該怎麼選也很傷腦筋。編輯部經過「一番廝殺」之後，決定在PC上推薦Foobar2000，作為PC最佳播放軟體之選。Foobar2000是免費軟體，系統資源佔用不大，效能很不錯，而且各種音樂檔案幾乎無所不包，全部支援。不過我們推薦Foobar200最重要的理由是外掛超多，而且還一直有新的外掛增加中，從音樂資料管理到高解析度檔案支援，Foobar2000不但現在就已經很好用，未來還有許多「軟體高手」幫忙讓Foobar2000越來越強，絕對玩在數位音樂的最前端。

iTunes播放軟體，介面簡潔、直覺、易用，還有強大的Apple相關資源。

關於Mac我們只推薦iTunes，因為其他軟體雖然音樂格式支援比較多，但資料庫管理功能都很弱。可是很多電腦音響玩家都說iTunes相對衰聲，如果想進一步提升iTunes的聲音品質，可以找外掛Amarra（可是每次iTunes升級之後就會出問題，要等新版Amarra才能解決問題，而且，Amarra還滿貴的。好吧，為了好聲，拼了！）。

Q6、什麼是Audio Codec？

老外最喜歡「縮寫」，好像這樣才顯得出專業。Audio Codec就是音樂訊號（Audio）壓縮/解壓縮（Compress/DECompress）的演算法或程式，前後加起來就是Audio Codec了。壓縮音樂可以是「無損失壓縮」或是「有損失壓縮」，所以音樂訊號「解壓縮」之後還原的音樂品質也有差異。基本上壓縮越少，聲音品質越好。

常用的Audio Codec列舉如下：
◎無損失壓縮
Apple Lossless Audio Codec（ALAC）
Free Lossless Audio Codec（FLAC）
Windows Media Audio Lossless（WMA）

◎有損失壓縮
MPEG-1 Audio Layer III Codec（MP3）
Advance Audio Coding（AAC）
Windows Media Audio（WMA）

Q7、擁有USB外接DAC之後我還需要音效卡嗎？

基本上不需要！當USB DAC與電腦連接之後，電腦會把USB DAC當作外接音效卡，成為Windows或OS X的「音訊設備」之一。不過如果你想使用其他介面將電腦與DAC連接起來，譬如AES/EBU或I2S，那麼高階音效卡才有配備這些數位輸出介面，對於某些使用「傳統」DAC的音響玩家來說，他們可能需要具備同軸數位輸出或光纖輸出的音效卡，這時音效卡純粹是為了「數位輸出」介面服務。

Q8、有人說Firewire比USB好，是這樣嗎？

對！也不對！規格上Firewire傳輸不消耗CPU運算，但USB則消耗CPU資源，我們也知道錄音室偏好Firewire，但Firewire和USB都只是「數位傳數介面」，不等於Firewire DAC一定比USB DAC更好，誰好誰壞要看整體產品的設計，不能用數位介面一概而論。你買的是DAC，不是買Firwire或USB，對吧？所以記得用耳朵驗證聲音，不要用眼睛看規格就算數。

Q9、給電腦播的音樂檔案從哪兒來？

想要用電腦加USB DAC取代CD唱盤成為音響系統的主要音訊來源，電腦播出的聲音當然不能比CD唱盤差，不然還有什麼意義？那麼高品質的音樂檔案從哪兒來？首先把你目前所有的CD收藏都轉成電腦檔案，就是所謂rip CD這個過程。建議可以使用EAC（Exact Audio Copy）軟體，這是目前免費的抓取WAV音軌軟體中，公認最強的一個，有中文介面，使用與設定並不太難，可多加利用。另外iTunes本身就有rip CD的功能，放入CD便全自動執行，更是方便。

目前公認最好用抓音軌軟體之一的EAC（Exact Audio Copy），只要在連上網路的環境下，放入CD它就會自動抓取CD曲目資訊，

解析度高於CD，也就是16bit / 44.1kHz以上的音樂檔案，則可透過付費下載或購買資料光碟取得，目前已有一些國外網站與唱片公司開始提供此項服務，像是HDtracks、Linn、Chesky、Reference Recordings等。如果只是要輕鬆不間斷地聆聽音樂，不在乎音樂品質，也可以使用網路廣播或付費串流音樂的服務，音樂類型幾乎無所不包，絕非個人CD收藏可比擬。

規格高一些的USB DAC都可以支援高解析音樂檔案，像是88.2kHz或是更高的176.4kHz與192kHz，你有機會體驗到近似錄音室母帶的聲音表現。

Q10、DVD-Audio或SACD可以RIP到電腦裡面嗎？

數位音樂格式都是人創造的，所以基本上沒有什麼不可能的事，但SACD裡面存的是DSD訊號，「據說」RIP出來是「違法」的事，此外，真要想RIP DSD訊號，可能要花大錢買Sony的錄音室設備（他們當然可以存取與複製DSD，不然怎麼製作SACD？），有必要嗎？至於DVD-Audio，透過適當的軟體做RIP不成問題，取樣頻率可以是48kHZ~192kHz，可是DVD-Audio現在已經很少見了，還是簡單多找CD來RIP吧。

*Review 1:

Xitel HiFi-Link

Rating:4+1/2 star

By Joel Shore

September 5, 2002

So you’re sitting in the dorm room cramming for that dreaded math exam. The stereo, with its scads of power and giant bass-rattling speakers, is blasting over in that corner. But you’re sitting in this corner playing your PC’s entire library of MP3 files through your Walkman headphones, or worse, those tiny, tinny speakers built into your laptop PC. You just know there’s gotta be a better way.

That’s when your brain cells hit on a brilliant idea: Why can’t I play the music that’s on my PC through my stereo system? Well, genius, you can. Enter the HiFi-Link from Xitel.

This is one of the simpler, and more elegant products you’ll come across this—or any other—year. Barely longer than 3 inches and weighing all of two ounces, this little silver-colored device converts your digital audio files into a high-quality audio signal that your stereo system can understand. Best of all, it completely bypasses that miserable-sounding audio card that you had no choice but to take when you bought that PC in the first place. It’s so cool, they ought to paint it icy blue instead of silver.

The HiFi-Link works with any audio file, including MP3, WMA, WAV, Real, Liquid, MIDI, Internet radio, and anything else you can throw at it. And it doesn’t care what application you use to play those files. Windows Media Player, Winamp, RealAudio Player, LiquidAudio Player, MusicMatch Jukebox, iTunes, LimeWire, Napster (R.I.P.), Cakewalk, Finale, and all the others will do just fine, thank you.

To get high fidelity, it’s critical to bypass your computer’s sound card and send the audio signal from your hard drive directly to your stereo system

Skip the card. If you wanted to play your MP3 files through your stereo system in the past, you had two solutions. First, you could burn a CD and hope your stereo’s CD player knew what an MP3 file was. The other method was to hook up a cable that you most likely plugged into the “line out” jack of your sound card (if you had one) or into your computer’s headphone jack. That’s a pretty crummy solution, because even a good computer sound card is decidedly mediocre at best when it comes to delivering true audiophile high fidelity. Distortion, dull treble, muffled bass, tinny midrange, and that annoying hum are typical of many audio cards. You were wondering if there was a better way. Yep, there’s a better way.

Because the HiFi-Link is a USB device, the digital signal never gets routed through your computer’s sound card. Instead, the signal goes through the main system bus where it’s directed to the appropriate USB port, in exactly the same way your word processor sends that term paper of yours to a printer. Whether it’s Nine Inch Nails or an analysis of Twelfth Night, the file you are processing is nothing more than a long stream of ones and zeros to your computer. A specially designed DAC chip (digital-to-analog converter) in the HiFi-Link does its magic and sends a high-quality, nearly distortion-free analog signal to your stereo.

Easy set-up. No product will ever be easier to install than the HiFi-Link. First, you connect the unit to your stereo system. The included 30’ cable has a standard 1?8" pin plug at one end, and a pair of gold-plated RCA plugs at the other end. You can plug the RCA plugs into any available line or auxiliary input on your stereo. Second, you connect the HiFi-Link to your computer with the included USB cable. That’s it! There’s no power supply to plug in. And best of all, there’s no software to install. In fact, the product does not even include a software CD-ROM. Your PC or Macintosh should find the HiFi-Link automatically and install the appropriate driver. It’s as plug-and-play as you can get. Wouldn’t it be nice if all products installed this easily?

The unit has four tiny rubber feet; obviously, the makers think it’s going to sit atop a desk, amplifier, or speaker cabinet. That’s not likely to happen. What’s more likely is that the HiFi-Link will be suspended by it’s cables over a bookcase or stuffed somewhere out of sight behind a desk. So what we did was to loop both the USB and stereo cables once around the unit, protecting them from being accidentally pulled out by securing them with a rubber band.

The HiFi-Link may be most at home in a college dorm or apartment where computer and stereo are within 30 feet of each other. In a single family residence, where computer and stereo are likely to be located in different rooms, the HiFi-Link may not be so quickly adopted. That’s a small inconvenience.

Bottom line? Xitel’s HiFi-Link is so cool, so affordable, and sounds so good, every music-pumping, eardrum-shattering college dorm-room stereo should be equipped with one. Don’t leave home without it.

*Review 2:

Xitel MD-Port AN1 Review
Austin Bailey - Monday, July 17th, 2000
Xitel is better known for its Platinum Sound Vortex2 cards, but has since moved onto a market that better targets their customers: digital music recording. What they came up with is the MD-Port AN1, an intriguing product for analogue MP3 to MD recording, so that you can easily record your MP3s into your MiniDiscs using a high fidelity hardware solution.

The biggest contender in the market are the myriad of sound cards out there, and with digital recording at an all time high, it brings to question why Xitel chose to come out with an analogue product. In fact, Xitel is working on a digital MD-Port, the DG1 (soon to be released), but for now, the AN1 is their toy of choice, and Xitel feels it has some advantages to offer over a sound card. For one, it is an external solution, it isn?t installed INSIDE the system, and audio purists have been arguing for a while that the electromagnetic interference inside a computer case affects the quality of the audio decoding. Second, thanks to its USB interface, the AN1 can be taken anywhere, and used on any computer, without complicated software installs. You literally plug and play (provided you have the proper USB support on your windows install). The USB interface also guarantees that only digital signals are passed to the AN1 device, where all the D-A conversions can take place. Thirdly, Xitel packages the full version of MusicMatch Jukebox Plus with the AN1, and MusicMatch has a few benefits that other media players don?t have, the chief of which is the track marking feature for MD recording.

I remember publishing an article a while ago about MD recording from MP3s, and the most common question out there is always ?how do I get auto track marking?? Normally when you record from CD?s using analogue cables, the tracks are auto marked because the CD?s have 3-4 second delay between tracks, and MD recorders in analogue mode use play volume to determine when tracks are turning over. In digital recording a CD player shuts off its digital output when a track finished playing, and this signals the MD recorder to mark tracks. The problem with recording from MP3s in digital AND analogue mode is that some computer media players, including Sonique, and WinAmp, do NOT have any functions to facilitate track marking in MD recordings. This could be a problem on some recorders which cannot otherwise distinguish between separate tracks. The included MusicMatch Jukebox Plus software DOES have a feature to enable 3-4 second silence spacers to signal track marking in analogue recordings, and that saves you a LOT of trouble. Several people I spoke to actually create empty 4 second long MP3s and put those between tracks to force track marking, but using the Analogue Track marking feature is so much more convenient. In our tests, we used a Sharp MD-MT20 portable recorder, and it did not require any special track marking when recording through an analogue connection? which made the whole MusicMatch software feature extraneous. If you also have a device without such problems, already one of the significant benefits of the The AN1 installs rather easily. No software drivers are included, because none are needed. You don?t even have to power down the system when first installing the device; you simply plug it in, and windows starts to install. If you have your Windows cab files on your HD, you don?t even have to whip out the original CD-ROM. After installation, a restart is necessary, but afterwards, you can actually plug and unplug the AN1 from your USB ports and your system will reconfigure itself automatically without a restart, it?s USB at its best! The ease of configuration is actually a must, since the minute you plug in your AN1, it takes over as the playback device in Windows. You can only have either your sound card, OR the AN1 as the playback device at any one time, so if you?re not recording tracks onto MD, your only option is to unplug the AN1, because as long as it is plugged in, the AN1 is the only audio device that will function. I found that there were some quirks in the way the AN1 configured itself when plugged and unplugged while the computer was on. The literature states that you should be able to do so freely, but I found that several times, unplugging and/or plugging the device into the system would cause some DLL?s to crash, and ultimately result in a forced reboot because audio became completely unstable.

The AN1 is essentially compatible with all MD recorders, since it?s really just passing the audio signals along. It is also compatible with any media player, again, since it?s just passing the signals along. I would stick with the MusicMatch software, because of its Analogue track-marking feature, but also because MusicMatch turned out to be a pretty good media player. With extensive features, MusicMatch becomes as much a digital music library organizer, as it is a media player. And with additional capabilities like CDDB support and the ability to rip and encode MP3s, this becomes a complete audio center.
The meat of the whole review rests on what I feel is the most important factor in deciding whether to purchase the AN1: whether it offers anything that regular sound card recording does NOT. If you believe in the dirty signal that is associated with a sound card installed inside of a PC case, then you have very good cause for purchasing a solution like the AN1. On the other hand, remember that MP3s use a lossy compression algorithm to begin with, so absolutely pristine recording conditions may or may not even be the most important factor in deciding audio quality, especially if you still go through that additional DAC conversion right before submitting the audio to the MD recorder. Then you could base the decision on ease of use and convenience. Certainly MusicMatch Jukebox enables a convenience that your regular media player does not have, but it can be purchased directly for $29.95 from Most of you are likely wondering about the core aspect of the AN1, which involve factors like signal noise and recording quality, but from my test recordings and blind A/B listening tests I found some interesting, but possibly inconclusive results.

I felt that recordings from the sound card and from the AN1 were both essentially ?good? and ?correct?, but I had the distinct feeling that the AN1 recordings had a more detailed quality, with better harmonics and a wider frequency spectrum. Electric guitars especially had a higher fidelity and better clarity, with a greater sense of depth in the sound stage. Vocals seemed more alive, and I am certain that the vocalists stood out more from the chorus in the AN1 recording compared to the sound card recordings.

When I asked some colleagues to also try some blind A/B testing, I got some mixed results that differed from my own experience.
AN 1 & MD Interface
Some felt that the sound card recording was crisper, and more ?detailed?, and that the AN1 recording sounded ?filtered? or muddled. One other colleague didn?t notice any difference between the recordings at all, and he was hard pressed to distinguish any sound quality differences. To me the sound card recordings were harsher, with a less refined high end, and more strident notes, but this experiment with several colleagues only proves the common belief that sound quality is highly subjective.The most interesting finding though, from the A/B tests, was that the recordings using the AN1 definitely turned up cleaner. In complex sequences, the sound card recordings had a slight but noticeable amount of background buzz or distortion that was not present in the AN1 recordings. This may very well be a result of the D-A conversions taking place outside of the computer casing, and away from the electromagnetic interference inherent in such an environment, or it could be that the AN1 had superior DACs with higher SNR ratios. Regardless, the AN1 proved that at least on the point of cleaner recording signal, it lived up to its marketing promise.

Based on the whole of the situation, I would have to suggest that the AN1 is not a device that you would invest in, unless you had a poor sound card and suffer from an obvious and audible amount of signal noise in recordings - some computers have so much interference that signal noise becomes a serious problem. If you are currently satisfied with your sound card recordings, an extra $59.99 may not be justified. On the other hand, if you are an audiophile with a sensitivity to the signal degradation of your internal sound card, the AN1 may be what you are looking for. As with all audio devices, the final say in audio quality rests in each users? hands, and I can only say that I preferred the AN1 recordings, while others indicated otherwise.
For those who are still waiting for a working digital recording solution, the upcoming MD-Port DG1 might just do the trick, and THAT is something that really might be worth looking into, since Xitel tells me that the DG1 allows auto track marks during digital recording of MP3s, and which is definitely the biggest problem in recording MP3s digitally to MD.

Overall Score: 81%

*Review 3:

Xitel MD-Port AN1 (11/06/2001)

Entered CNET Catalog: 11/06/2001

SKU: MDPORTAN1

Manufacturer: Xitel Pty. Ltd.

Manufacturer description
The MD-Port AN1 provides high fidelity connectivity through a specific audio circuit that has been optimally designed for recording to MiniDisc. It takes digital audio information from a PC down the USB bus and converts this into a continuous stereo analog signal, which is then sent to your MiniDisc recorder via mini-stereo cable. All audio processing is performed outside the computer's noisy internal environment to ensure maximum sound quality is always maintained. Automatic track marking is provided by way of a setting in the included MusicMatch software. The MD-Port AN1 is an advanced USB interface that lets you record tracks ripped from CD, music files downloaded from the Internet, or even streaming Netradio to MiniDisc. It is designed for seamless use with all MiniDisc recorders, and includes MusicMatch Jukebox Plus - a powerful program for ripping, encoding, and playing all your MP3 files. The AN1 operates simply by plugging into a USB port. After a few simple steps in Windows, you'll ready to record. There's no easier way to get those MP3s off your PC. The AN1 has been specifically engineered to provide a high fidelity link between PCs and MiniDisc recorders. It is a simple way for MiniDisc owners to record their MP3 collections without sacrificing audio quality. By incorporating a unique design that takes audio rendering outside the noisy internal computer environment, the AN1 cuts out any reliance on a soundcard. It delivers exceptional audio performance, so you can confidently record knowing you'll get only the best possible clarity. The AN1 operates simply by plugging into a USB port. That's all there is to do. No need to open the computer, or even worry about loading any device specific drivers. When you're done, simply unplug the AN1 and your system will automatically revert back to the way it was before. Your MD-Port AN1 comes as a complete recording kit, that includes everything you'll need to record from PC to MiniDisc straight away, as well as things like a User Manual and a full version of MusicMatch Jukebox Plus.
Product summary

The good: Easy to use; clean sound; inexpensive.

The bad: Could be replaced by a $3 cable and a good sound card.

The bottom line: If you're not satisfied with your sound card's fidelity, this USB connector is an inexpensive way to send audio to your MiniDisc player.

Xitel MD Port AN1 Review 4:

Thomas James
May, 2000
Synopsis
The Xitel MD Port AN1 is a USB device that turns a USB port on a Windows 98 or 2000 PC into an analogue line out jack.
Impressions
Here are my impressions of this piece of MD kit that I've recently acquired. I'd like to preface this by saying that my laptop has no line out in case anyone is wondering why the heck I would buy this thing.

The device itself comes with a rather long USB cable (PC to MD Port) and a rather short 3.5mm stereo cable (MD Port to MD). The MD Port unit is a bit larger than I expected (10cm long x 2cm tall x 3cm deep), although it is very light in its plastic (metallic coloured) casing. It also comes with the full version of MusicMatch Jukebox which is apparently pretty good for encoding and playback (although I have never used it).

The MD Port is plug and play right out of the box. When I plugged it into my Windows 98 machine for the first time, Windows informed me that it had found new hardware and that it was installing the necessary drivers. It installed three sets of drivers (as the manual suggested it would) directly from my hard drive, with no need for the Win98 CD (which is good since I can't find mine!). The MD Port comes with no software of its own to install. After approx. 2 mins. of driver installation, it was up and running, providing a quality line out to MD (relative to the laptop headphone jack I had being suffering with).
Observations

You can't use your PC's normal audio output (e.g. the soundcard) and the MD Port simultaneously so any monitoring has to be done via your MD recorder (or whatever the MD Port is connected to). The good thing is that when you plug in the MD Port, the PC configures itself to output via USB and when you remove it, the PC automatically reverts to its standard audio output setup (e.g. soundcard).

For some reason, USB audio output (via this device anyway) seems to be so taxing on my system that Winamp sort of freezes up when I use the slide bar to advance within a given track. Nothing crashes but I have to recommence playback from the beginning of the track. This never happens when the MD Port is not plugged in.

The MD Port doesn't seem to output from the CD-ROM drive. It continues to output via the standard setup (e.g. soundcard), even when the MD Port is plugged in (I tried Winamp and Windows CD Player). I noticed that when the MD Port is plugged in and the system has configured itself to output via USB, the CD volume control is not accessible in Windows Audio Properties (as it normally would be) so I assume it was not meant to output CD audio. This is not a problem for me as I do all my CD to MD stuff digitally, away from my PC, but I could see this as being a problem for many people.

Conclusion

This device has provided me with the highest quality audio output from PC that I have experienced to date (N.B. All of my experience is in the analogue domain) and sounds great to my ears (indistinguishable from the source). At the same time, I would only recommend it to someone fitting this profile:

You have no PC line out or have a really poor line out.
You have some other means to achieve CD to MD recording, or don't require the capacity to achieve this.

Editors note:

I have used the MDPort AN1 also, and feel that its analog output quality is significantly better than most PC sound cards. I would modify point (1) above to read: ``You wish to achieve better quality recordings than what is possible with the analog output from your machine's sound card''.
The reason CD output doesn't work is because the whole USB spec is digital. You can't therefore take the analogue output from a CD drive and play it through the USB port - you have to take the audio data from the CD digitally. This is the same with any audio device on the USB port.
Xitel reports that users will not have to worry about driver upgrades (actually, all drivers for the device already come with the Microsoft OS).