{"type":"product","schema_version":"1.0","item_id":"100838295070","canonical_url":"https://tw.bid.yahoo.com/item/100838295070","title":"【旗艦】後級擴大機 經典McIntosh MC-2500  強力輸出500瓦","subtitle":null,"condition":"近全新","currency":"TWD","observed_at":"2026-07-30T10:52:05.251Z","current_price":1234567,"original_price":null,"stock_status":"low_stock","available_quantity":1,"sold_quantity":0,"seller":{"id":"Y4540971780","name":"VAS","positive_rate":null,"rating_count":null},"images":[{"url":"https://img.yec.tw/ob/image/fa29f8b8-dd47-4cfc-b0a4-58afd2cd6e5d.jpg","role":"main","alt":"商品主圖","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/0fb63476-96ee-4f01-9760-49bad48d95fd.jpg","role":"detail","alt":"商品圖片 2","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/110b6bc0-a5d3-4026-9882-7712a48938f1.jpg","role":"detail","alt":"商品圖片 3","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/5a23466c-517f-402c-b4eb-71b2785329c0.jpg","role":"detail","alt":"商品圖片 4","width":null,"height":null}],"description":"自每聲道300瓦的MC-2300推出後,McIntosh已有多年未再推出更高功率的後級放大器,但在去年底的台北音響展中,相信住在北部地區的讀者都看到了MC-2500。就外型來說,本機並未做重大的改變,由於依然使用了獨特的輸出變壓器,故無論負載如何變動,輸出功率亦不會改變。\n\n　　當使用於立體訊號時,面板上左右聲道的增益控制皆有作用。當用於Mono時,則有橋接單音和並聯單音兩種輸出,差別是喇叭輸出座接線的不同,因而造成了負載阻抗的不同。橋接單音適合2、4、8、16歐姆,並聯單音適合0.5、1、2、4歐姆;而使用Mono時,輸入信號應插入右聲道端子,面板上的增益控制亦由右聲道行之,只是要記得背板上的Mode控制應視使用情況調整。\n\n　　其他方面,本機開啟電源時不以繼電器做保護,而改以UJT;風扇的速度亦可調整,並且能隨散熱片溫度升降而自動開啟或關閉。面板上並有耳機輸出座,適合低阻抗的動圈式耳機,惟在使用時應將喇叭選擇控制旋至OFF的位置。\n\n本機的規格如下:\n\n每聲道輸出功率為500W,如做Mono時則有1000W,頻率響應為10至100KHz(+0.25,-1dB,1W輸出時),總諧波失真為0.02%(任何功率輸出時),信號雜音比為95dB(全功率輸出),阻尼因數大於30,輸入靈敏度為0.75V、2.5V兩檔選擇,輸入阻抗為50K","shipping_methods":[{"name":"宅配/貨運","fee":0,"currency":"TWD"}],"lowest_shipping_fee":null,"payment_methods":["ATM轉帳"],"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":0,"watch_count":27}