Wednesday 2 January 2013

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聲音具有黃金光澤的 Golden Tube SE-40真空管後級

(圖)規格:每聲道使用三隻Sovtek 5881/6L6WGC單端並聯,輸出功率40瓦,純A類可調整有無負迴授,可以橋接使用,頻率響應20-22KHz -1dB,THD失真>0.009%,尺寸:77x14x8吋,重量45磅。售價:43,000元,代理:愛爾法(02-6953530) 最近有讀者寫信來詢問有關A類與AB類何者為優?也曾經有讀者詢問真空管機與晶體機何者為優?其實這兩個問題的答案是因人而異、因機而異,而且因時而異,沒有絕對的答案。就好比真空管迷裡存在著「單端派」與「大功率派」一樣,單端派的人堅持以最簡單、最古早的作法,把真空管最原始的聲音呈現出來。他們不需要大功率,並且唾棄真空管推挽連接,儘管堅持到最後還得不到十瓦的功率,卻依然自得其樂。大功率派就不同了,使用數隻大功率的真空管做放大,除了推挽之外再並聯連接,並以精密的電路來控制整體的運作,極力要求降低失真以及拓展頻寬,以獲得強大的驅動力以及現代音響美學的表現。兩者雖然互為相反的理論,不過追求的卻是完全相同的結果,那就是自己聽爽就好! 我個人雖然是單端擴大機的用家,不過卻從來不堅持單端也不唾棄推挽,對我而言,「管它是黑貓白貓,能捉老鼠的就是好貓」! 今年的音響大展您是否也發現了這個吸引人的品牌?他們產品不多,卻幾乎樣樣精彩,系列產品包括這次介紹的SE-40真空管後級(輸出功率40瓦)、輸出更大的SE-100後級(輸出功率100瓦)以及使用300B製成的SE-300B Mk.II(輸出功率9瓦)等。今年大展之中,從代理商的攤位中又發現了兩部新推出的產品,SEP-1前級內部只有一隻小真空管,使用交連變壓器成為平衡輸出入。另一部SI-50則是唯一的綜合擴大機,它們皆採用較進步的邏輯控制開關,並且堅持真空管設計,相信不久之後就可以見到其他器材的評論。 Golden Tube SE-40是一部單端並聯的後級,訊號輸入之後直接送往6H8C(說明書上是寫著6SN7)做放大,然後以三隻Sovtek生產的5881/6L6WGC做單端並聯輸出,可以獲得40瓦的輸出功率。讀者對Golden Tube並不熟悉,即使器材包裝內對自家產品的介紹也不多,不過在包裝內卻附上了一張CFAC銅箔電感的小型錄,原來Golden Tube就是生產CFAC電感Solo公司的音響製品。可惜的是在擴大機上用不到這種發燒的電感(它是用在分音器上的),否則聲音更是相輔相成才是。 包裝內附上一張英文評論影印,評論上對線路的分析並不多,倒是一面叫好的文字確有不少。綜合的來說,Golden Tube SE-40是一部集單端擴大機「美聲」的優點,同時又有推挽擴大機「大功率」的好處,同時還有美金售價還不到一千元的「超值」條件,該員還以幾部以美聲聞名的器材如RM-10、Audio Note P2等比較,綜合比較之後,Golden Tube SE-40的超值表現已經讓該評論員口水流滿地了。 觀察它們的器材之後可以發現幾個Golden Tube的特點,他們的產品不喜歡負迴授(機內可以調整零負迴授或負迴授),而且使用單端並聯設計,同時盡量把瓦數做大(連單端300B都做到少見的9瓦!),以適應現代的喇叭。為了拓展頻寬,他們特製了一個超線性繞組,可以再生20-22KHz -1dB的優質輸出變壓器。為了美聲,內部所有的交連電容皆採用Wima的MKP10塑料電容。還有,SE-40也可以橋接使用,只要打開機箱按照說明連接插銷,轉身一變成為一部80瓦的擴大機。說明書上還告訴您使用一部、兩部,甚至是三部、四部SE-40的玩法,至於其他如沈重的機箱、厚實的鋼板以及做工不錯的面板,這都是迎合現代人挑剔口味的結果。 (圖)Golden Tube的母公司Solo自己生產發燒級的銅箔電感,可惜在擴大機身上用不到這種零件,不過卻大量使用WIMA的MKP-10金屬膜電容。有一顆體積顙大的扼流圈就暗藏在電源變壓器旁,作法古典,聲音也富有古意。 喜歡嗎?我覺得製造品質以及使用的材料確實還不錯,面板加工的質感也有高級器材的味道,只不過八隻真空管發出的熱量確實可觀,開機一個鐘頭之後整部後級就熱烘烘的,可以媲美Pass的Aleph擴大機,這是真空管後級的通病,無可挑剔。擺放時不要將之塞入音響櫃,通風越好對器材的壽命有絕對的好處。 很可惜的是代理商只送來Golden Tube SE-40後級,沒有把該公司的前級一併送來搭配試聽,所以無法得知真正的Golden Tube之音。在公司我以Proceed CDP CD唱盤直入SE-40後級,搭配的喇叭則有Wilson Benesch ACT-1以及NHT 2.5i,它都明顯呈現出溫暖厚重的傳統真空管音色。以40瓦的輸出功率對這兩款喇叭來說是小了些,播放大部分音樂表現仍然有模有樣,唯有大動態下與晶體機相較時,才能察覺極低頻的控制力稍有不足。 NHT 2.5i是一對很有潛力的喇叭,以晶體機驅動時,就像個爆發力強的超級運動員,暫態反應快速,低頻延伸充足,唯高頻質感稍嫌生硬。改以Golden Tube SE-40驅動時,NHT 2.5i的表情馬上變得柔性起來,中頻人聲比晶體機來得柔軟甜美許多,原本像重金屬音樂般的刺激片段,在此削弱了生硬的金屬味,轉變成圓滑的線條,改變的幅度相當大,音樂性流暢感卻很好,用文字來形容就是「音樂變順了」。 記得訪問David Manley時,他曾說最好聽的真空管是6L6,而且他老兄對於蘇聯製的真空管贊賞有加。Golden Tube SE-40使用的正是Sovtek 6L6,雜誌社裡沒有使用相同6L6製成的管後級,在家中與我的昕樂單端並聯300B相較,SE-40的聲底比較清晰一些,中頻弦樂濃厚的黏滯感則稍淡一些,恰好介於晶體機與管味較濃的管機之間,具有現代管機應有的解析度與透明感。不論以NHT 2.5i或Wilson Benesch ACT-1聆聽高頻細節較多的音樂片段時,該有的細節一樣不少,不過音質相對比較細柔化,火氣味消失,換來的是速度感轉慢。流行歌曲放上去,好像把唱盤的轉速調慢了,如果遇到慢板,五線譜緩慢前進的速度,還真會讓人喘不過氣來。Golden Tube SE-40要你放輕鬆的欣賞音樂,而不是像蕭提或海飛茲一樣,老是急著把樂譜上的豆芽菜快速讀過,如果您也喜歡放鬆心情欣賞音樂,Golden Tube SE-40在這方面可就了解您的心。 我把Gonden Tube SE-40帶回家中,以Mark Levinson No.39XL CD唱盤,分別直入或以Classe CP-45前級搭配SE-40,跳過電子分音器直接驅動Quad Pro-63靜電喇叭。Classe CP-45是一部音染極低、個性不重的前級,以CD唱盤直入時,SE-40的聲底明顯趨向軟調柔和,Quad Pro-63的聲音本來就是一副與世無爭的平和調子,以SE-40連接更顯得其慵懶柔軟的一面。中頻的表現與目前使用的昕樂300B極為類似,同時兼具醇與厚的特色,受惠於輸出功率比300B大得多,所以對於頻寬兩極的拓展更有幫助。鼓聲在此仍然結實有力,較Classe CA-100後級多了一分溫潤;弦樂當然是細緻甜美,卻多淋上了一層金色的蜂蜜。 Golden Tube SE-40的音場較結實集中,不論與Classe CA-100或昕樂300B相比,當由這兩部擴大機換上SE-40的瞬間,可以感受到音場兩邊的規模會往中間縮,能量聚集在喇叭的中央地區,歌劇的演唱或爵士的人聲,演唱者的歌喉集中在中央的位置,能量及形體感隨著提昇,只是周圍及背景的表情就不若人聲凸顯。不過若搭配擴散性大的喇叭,卻可以彌補上述的缺點,完全得看搭配而定。 大致說來,Golden Tube SE-40是一部具有傳統真空管音色的真空管後級,單端並聯的作法確實讓聲音醇厚一些,不過對於低頻的控制力以及暫態速度的表現,就無法像晶體機一般凌厲,卻比古早設計的管機擁有更清晰及更透明的音色。使用高級的電子材料以及號稱20-20KHz -1dB的輸出變壓器,在兩極延伸的表現上確實有模有樣,驅動高頻延伸良好的喇叭時,可以展現輕鬆自然且柔美的高頻音色。建議搭配高頻質感好、效率中等不太難推的喇叭,SE-40可以提供很好的聆聽享受。速度偏慢與音場集中,正好可以搭配Pro AC、Platinum、JM Lab以及AE等喇叭的個性。雖然目前有許多CD唱盤具有調整音量的功能,不過仍然建議使用一部前級搭配使用,使用一部聲底清晰音染低的前級,除了可以增加低頻的控制力之外,更可以獲得更飽滿充實的中低頻,對整體而言是全面性的提昇。有機會可以把機內的保險絲換成銀軸保險絲,對於音場的拓展有正面的幫助,試試看吧!■

Tuesday 1 January 2013

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We have just acquired a superb jazz collection in unusually clean condition. If the record that you are looking at now interests you, it is likely I have others listed that will blow you away. Please check out my other auctions and get a piece from this incredible collection. All records from this collection have been cleaned on a Keith Monks Record Cleaning Machine and stored in an audiophile sleeve. All records have a number circled in ballpoint in the top right corner of the back cover. Watch our auctions in the upcoming weeks as many rare records will be offered including Saxophone Colossus by Sonny Rollins, Lights Out by Jackie McLean as well as many other original pressings on classic labels like Blue Note, Prestige, New Jazz, Riverside, Bethlehem and many others. Evans, Bill Portrait In Jazz Media: LP Condition: NM Cover Condition: EX+ Label: Riverside Reference Number : 12-315 Country: US Date: 1959 Original mono pressing with blue label, reels and microphone logo and a deep groove. Record is clean and unmarked. Cover has light shelf wear, seam wear, less than 1/4 inch split on the bottom seam at the open end and a number circled in ballpoint in the top right corner of the back cover Musicians - Bill Evans on piano, Scott LaFaro on bass, and Paul Motian on drums. Jazz Record Revival Our grading is guaranteed! If not as described, return for a full refund. Just notify us within 7 days of receiving, and have the item back to us within 10 days of notifying us. We have shipped records all over the world since 1978. We take great pride in our grading and packing and are sure you will be pleased with your purchase. DUE TO EBAY AND PAYPAL POLICIES, WE WILL ONLY SHIP TO EUROPE BY TRACKABLE METHODS - PRIORITY MAIL, EXPRESS MAIL OR REGISTERED MAIL. WE NEED TO HAVE THE ABILITY TO TRACK SHIPMENTS TO PROTECT OURSELVES FROM PEOPLE WHO BLAME US FOR THE POST OFFICE DAMAGING OR LOSING A PACKAGE. IF YOU WILL NOT HOLD US RESPONSIBLE FOR ANY PROBLEMS THAT MAY ARISE, YOU CAN REQUEST A NEW INVOICE WITH 1ST CLASS RATE, EXCEPT ITALY. Buyers from Italy - PER I ACQUIRENTI ITALIANI: SPEDIAMO IN ITALIA SOLO TRAMITE PRIORITY MAIL($28) E NON CON RACCOMANDATA COME INDICATO IN ASTA. GRAZIE. All records will ship in new record boxes with cardboard packing. We remove all LP records from their sleeves before shipping to protect the seams of the cover. Sealed LP records will NOT be opened before shipping, unless you request us to do so. We are NOT in the office on Sunday or Monday to answer questions or ship orders. If you have questions about one of our listings or wish to pay with a credit card, you may call (303) 816-1349 , between 10am & 5pm, Tuesday through Saturday (Mountain Time). We also accept payment through our secure server - https://jazzrecordrevival.com/cc_form.cfm We accept Paypal or MasterCard and Visa through our secure server. Thanks for looking! Jazz Record Revival We do not play grade MOST of our records so we guarantee our visual grading with a money back guarantee that includes shipping. If we do play a record, we will let you know of any noise in our description. Generally, we do not list records below EX- condition unless it is exceptionally rare. We do not recommend audiophiles bid on records in less than NM- condition. Our grading standard is as follows. Mint is only used for sealed records or records that we are certain have never been played. Near Mint or NM is for the most part as good as it gets! No marks and will play clean with no noise unless inherent in the pressing. EX+ Will generally have one or two minor flaws, but will overall be near mint. EX or Excellent will have light surface marks and some background noise. EX- Overall an Excellent copy with light surface marks, but with something that distracts, like a small scratch that makes a few pops. VG+ Consistent background noise, pops but should not skip or stick. Still a playable copy. VG has many problems. Noise will dominate. May have quite a few pops and possibly a skip. VG- Will likely have a skip or two and will be very noisy. G = Our lowest grade and is actually a poor record. RETURN POLICY: Refund will be given as: MoneyBack Item must be returned within: Days_7 Return Policy Details: All items are guaranteed to be in the condition described and I offer a full refund under the following conditions; 1) I am notified within 3 days of when you received the item. 2) The item is back to me within 7 business days of when you received it. 3) And the item is in the same condition it was when I shipped it.