{"type":"product","schema_version":"1.0","item_id":"101483014978","canonical_url":"https://tw.bid.yahoo.com/item/101483014978","title":"[古典音響殿] 經典美品 McIntosh C28 前級擴大機","subtitle":"電壓:120V . 中頻暖聲厚實 . 低頻強悍","condition":"近全新","currency":"TWD","observed_at":"2026-05-02T18:45:27.610Z","current_price":25000,"original_price":null,"stock_status":"out_of_stock","available_quantity":0,"sold_quantity":1,"seller":{"id":"Y5139053508","name":"[古典音響殿]二手音響收藏交流","positive_rate":null,"rating_count":null},"images":[{"url":"https://img.yec.tw/ob/image/ea8e0374-b3fc-47d7-a2d2-67baa2d9ad6f.jpg","role":"main","alt":"商品主圖","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/6ac08491-9884-4218-9ab6-8a4a78f01ae3.jpg","role":"detail","alt":"商品圖片 2","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/636efb77-0ef1-43c8-bc26-8463b6d3a070.jpg","role":"detail","alt":"商品圖片 3","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/26c35dc6-0120-4694-8dc6-b7e1631d7c80.jpg","role":"detail","alt":"商品圖片 4","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/c305f5b1-ae87-4f5e-8cdb-f0bc144cb090.jpg","role":"detail","alt":"商品圖片 5","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/20d062d8-a0bb-4b97-b5ee-382c511947d0.jpg","role":"detail","alt":"商品圖片 6","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/8a8c0f1f-f786-47c7-ae5a-31184d226de0.jpg","role":"detail","alt":"商品圖片 7","width":null,"height":null}],"description":"本賣場商品都是辛苦從日本找來收藏的 \n \n當然美品價格不會太低但也是較有收藏的價值\n \n 請買家注意  務必在得標後五日內結帳  然後七日內付款\n \n二手商品  對外觀要求十分完美的  請不要下標\n\n規格頻率響應：20Hz至20kHz\n\n總諧波失真：0.1%\n\n增益：62dB（MM）、20dB（線路）\n\n輸入靈敏度：2.5mV（麥克風）、2mV（MM）、250mV（線路）\n\n信噪比：78dB（MM）、90dB（線路）\n\n輸出：250mV（線路），2.5V（預輸出）\n\n半導體：26 個晶體管、4 個二極管、2 個橋式整流器\n\n尺寸：406×138×381毫米\n\n重量：11.34公斤\n\nC28 被認為是第一代 McIntosh 固態前置放大器，於 1970 年至 1978 年間生產，產量約為 22,000 台。它配備了專用的20w 耳機放大器、四個低電平輸入（兩個唱機、磁帶頭、麥克風）、四個高電平輸入（輔助、調諧器、磁帶1/磁帶2）、線路輸出、兩個磁帶輸出、主輸出到驅動單聲道或立體聲放大器、多個開關和非開關交流插座以及 McIntosh SCR-2 控制器的連接，允許 C28 運行兩組揚聲器。它還允許通過繼電器而不是開/關開關控制外側交流插座，這允許高電流放大器通過前置放大器開/關運行。","shipping_methods":[{"name":"宅配/貨運","fee":0,"currency":"TWD"},{"name":"面交/自取/不寄送","fee":0,"currency":"TWD"}],"lowest_shipping_fee":null,"payment_methods":["ATM轉帳","信用卡一次付清"],"category_id":"2092075250","category_name":"前級擴大機","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":"2092075250","name":"前級擴大機","url":"/tw/%E5%89%8D%E7%B4%9A%E6%93%B4%E5%A4%A7%E6%A9%9F-2092075250-category.html"}],"view_count":11,"watch_count":27}