{"type":"product","schema_version":"1.0","item_id":"100515046769","canonical_url":"https://tw.bid.yahoo.com/item/100515046769","title":"1970年代東電電器廠產製真空管單端輸出變壓器一對，阻抗5.5K：4歐姆，功率3瓦，做工紮實，線圈層層墊紙，絕緣性極佳！","subtitle":"初級5500 Ω，次級4 Ω","condition":"全新品","currency":"TWD","observed_at":"2026-04-24T07:23:35.145Z","current_price":500,"original_price":null,"stock_status":"out_of_stock","available_quantity":5,"sold_quantity":5,"seller":{"id":"Y5745547719","name":"Y5745547719","positive_rate":null,"rating_count":null},"images":[{"url":"https://img.yec.tw/ob/image/b88df47e-0079-4360-aa6b-6d44af7edea5.jpg","role":"main","alt":"商品主圖","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/61aa143e-66ce-454b-91a4-6995e6516a6a.jpg","role":"detail","alt":"商品圖片 2","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/5e147ae5-5fd4-4856-aa01-deda6c278d5e.jpg","role":"detail","alt":"商品圖片 3","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/5ebd3692-0708-4ef8-b10c-0dd212ecac21.jpg","role":"detail","alt":"商品圖片 4","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/c5eea949-0c8d-486f-83c4-dd0796892bf6.jpg","role":"detail","alt":"商品圖片 5","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/79319d1c-cf4d-4039-8d49-f87d897d420e.jpg","role":"detail","alt":"商品圖片 6","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/f51bba9a-dfa2-4ee8-97e9-3bf486ce86a9.jpg","role":"detail","alt":"商品圖片 7","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/d3965fbd-2824-4977-b450-a618ac4f4e6b.jpg","role":"detail","alt":"商品圖片 8","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/e9be154f-fab1-4347-8285-d8deda01a0a9.jpg","role":"detail","alt":"商品圖片 9","width":null,"height":null}],"description":"***販售真空管單端輸出變壓器，老庫存全新品，一標一對！***\n\n \n\n1970年代真空管應用後期，多數收音機所使用的輸出管均為體積小巧的花生管，其中九腳的6P1（俄規6П1П）的電氣特性，等同美規七腳版的6AQ5。原廠建議工作值區分為兩組，普遍被採用於收音機內部音頻功率放大級的參數，為屏壓與簾柵壓180V，輸入柵偏壓－8.5V，屏流29mA，簾柵流3mA，負載5.5KΩ時，輸出功率2W，相較於其他許多失真率高達10％以上的管型，它僅有8％，是相當優異的設計。\n\n \n\n項內所販售的輸出變壓器，正係為此管所出，它的初級阻抗為5500歐姆，次級4歐姆，儘管實際上應用的電壓並不高，但在線圈的繞製過程中，每繞滿一排漆包線，即墊上一層皮紙，層層相倚，工法嚴謹有序，後續凡立水的充分浸透與烘烤，再再地確保了最佳的絕緣性，以及最長的使用壽期。 \n\n \n\n而從時下音響玩家的角度來看，初級阻抗在5K左右的輸出變壓器，對應於許多出力在3W以內的歐美製管，是非常好用的規格。其鐵芯尺寸，不含線包與框架，淨高3.9公分，寬4.6公分，疊厚2.1公分，重量0.25公斤。無論是在外觀比例，還是電氣性能上，均能合宜地配套使用。 \n\n \n\n上列各幀相片所示之成品機，採用了入門款的經典電路，係以一只電氣特性等同美規12AX7，然腳位不同之雙三極管6N2（俄規6Н2П），分別驅動兩聲道6P1功放管之單端設計，遂行規劃製作。此機為個人試裝試用樣本，並非本項販售商品，主係體現此款輸出變壓器之裝機樣態。拍照時，機側放置一只打火機，以便於體會尺寸大小，請參閱。 \n\n \n\n經實際試聽，其音色柔和軟潤，與當代新產品兩致，古早味十足。它也許沒有日系探戈或田村一般上窮碧落下黃泉的頻率延伸性，但已能提供適切的高低頻量感，確係符合行家口中所形容的「老奧斗」風格，相當迷人動聽！在長時間聆賞下，絲毫不覺噪耳。而如果環境許可，作為讀書與工作時的背景音樂撥放，則其調和氛圍、安神定緒的效果，尤為特出！個人非常喜愛。 \n\n \n\n但凡坐而言，不如起而行，說得再多，未若請您親自上手試試，充分地細品老職匠精神與其工藝精髓之所在，方能作數。誠意分享，希望您會喜歡。謝謝！","shipping_methods":[{"name":"郵局掛號","fee":0,"currency":"TWD"},{"name":"7-ELEVEN取貨付款","fee":0,"currency":"TWD"},{"name":"宅配/貨運","fee":0,"currency":"TWD"},{"name":"離島配送","fee":0,"currency":"TWD"}],"lowest_shipping_fee":null,"payment_methods":["ATM轉帳","7-ELEVEN取貨付款"],"category_id":"2092107940","category_name":"真空管擴大機","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":"2092107940","name":"真空管擴大機","url":"/tw/%E7%9C%9F%E7%A9%BA%E7%AE%A1%E6%93%B4%E5%A4%A7%E6%A9%9F-2092107940-category.html"}],"view_count":0,"watch_count":12}