{"type":"product","schema_version":"1.0","item_id":"101612287509","canonical_url":"https://tw.bid.yahoo.com/item/101612287509","title":"一代機皇 Counterpoint SA-20前旗艦後級, 220 瓦 x 2 ,日幣85 萬特價4.7萬元出價就賣","subtitle":null,"condition":"近全新","currency":"TWD","observed_at":"2026-05-30T01:58:23.048Z","current_price":40000,"original_price":null,"stock_status":"low_stock","available_quantity":1,"sold_quantity":0,"seller":{"id":"Y6926949449","name":"音響家電","positive_rate":null,"rating_count":null},"images":[{"url":"https://img.yec.tw/ob/image/a0a0d5f0-587d-4f8f-8cf5-de40af894448.jpg","role":"main","alt":"商品主圖","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/03810c25-9e7d-4cc6-b06b-db8c1570da37.jpg","role":"detail","alt":"商品圖片 2","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/e11fac6e-99e5-4ce8-93ab-c5850d421c42.jpg","role":"detail","alt":"商品圖片 3","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/79687bf8-cd7e-4f0d-bf23-14b68fc7df71.jpg","role":"detail","alt":"商品圖片 4","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/b06faf0e-c494-49a1-a835-dc27512fb08f.jpg","role":"detail","alt":"商品圖片 5","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/9b6836c5-075d-41f7-bda8-f5289bb8dafe.jpg","role":"detail","alt":"商品圖片 6","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/55e3a031-d0d5-4ff7-9e76-abf34b7481e8.jpg","role":"detail","alt":"商品圖片 7","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/f87b3ca3-2861-42be-8d35-26856d9cefd7.jpg","role":"detail","alt":"商品圖片 8","width":null,"height":null}],"description":"有意者請洽本店            1. Counterpoint            SA-20 是前管後晶的旗艦後級設計，本件外殼8-9成新，是一手用家不常用到而出售的，SA-20旗艦機種在日本的售價達日幣85-100萬元，等於可以買當時的一輛汽車喔！現在低價享受使用是絕對超值的。\n\n2.Counterpoint   開創了真空管與晶體的混合設計，Counterpoint是一個神秘又高貴的名字,早就是音響迷心中「Hi-End」的少數幾個代名詞之一。 它的產品種類不多,但全跟真空管有關,而且在音色上也都有著極強烈的特殊色彩。 這種獨特的音色呈現使得許多人深深地為之著迷,尤其在世界各地更是到處可見Counterpoint的擁護者。\n\n3.在臺灣,Counterpoint的SA-5.1前級、SA-4、8E旗艦前級、SA-20旗艦後級仍舊是許多人鍾愛的銘器。\n\n4.一代機皇Counterpoint SA-20 功率220W*2 @ 8 OHM,  結合了真空管和MOS-FET鐵殼功率晶體前管後晶後級擴大機，現在因為MOS-FET使用年限是三四十年前的，目前已經停產，萬一故障無處可以修理。故為保持晶片的可保養更換性，已經全數換成現代化適用的晶片且更新此部分需要更改的線路，以確保使用者的安全。\n\n5.1KVA X EI 超大變壓器,4 顆 可樂罐型大濾波電容,5 顆 6DJ8 + 1 顆 6CA4 雙三級管作第一級和第二級的電壓放大和驅動，具有低內阻和優異的線性度。此外；通過恆定電流負載實現陰極跟隨器電路，陰極跟隨器驅動器實現更高的線性與低失真。 \n\n6.16 顆 現代版的功率晶體作為輸出級。通過將輸出級與NFB環路相比較，無需擔心由於揚聲器或網絡在任何負載下的電感而產生的振盪。\n\n7.使用WIMA 、Wonder、Rodenstein等的金屬膜電阻等高級零件。 \n\n8.後級擴大機~ COUNTERPOINT                 (前管後晶) 規格：\n\n型號 :   SA-20  \n\n功率:Stereo-AB類\n\n220W x 2 @            8 歐姆\n\n420 W X 2 @            4 .歐姆\n\n640 W X 2 @            2歐姆\n\n美國製\n\n重量: 25 kg自取為宜\n\n體積:W48.3 × H17.0 × D48.3㎝\n\n使用電壓：117V\n\n9.二手非新品  絕對有使用痕跡, 不在意者再買,但功能絕對正常, 毫無雜音, 整天開機, 工作穩定,聲音與推力也一定是水準之上的 表現，其他場所二手標價高達67792元另加運費喔。","shipping_methods":[{"name":"宅配/貨運","fee":0,"currency":"TWD"}],"lowest_shipping_fee":null,"payment_methods":["ATM轉帳","信用卡一次付清"],"category_id":"2092075251","category_name":"後級擴大機","breadcrumb":[{"id":"2092101502","name":"家電與影音視聽","url":"/tw/%E5%AE%B6%E9%9B%BB%E8%88%87%E5%BD%B1%E9%9F%B3%E8%A6%96%E8%81%BD-2092101502-category.html"},{"id":"2092105885","name":"影音/視聽/MP3","url":"/tw/%E5%BD%B1%E9%9F%B3-%E8%A6%96%E8%81%BD-MP3-2092105885-category.html"},{"id":"2092075249","name":"擴大機","url":"/tw/%E6%93%B4%E5%A4%A7%E6%A9%9F-2092075249-category.html"},{"id":"2092075251","name":"後級擴大機","url":"/tw/%E5%BE%8C%E7%B4%9A%E6%93%B4%E5%A4%A7%E6%A9%9F-2092075251-category.html"}],"view_count":20,"watch_count":11}