{"type":"product","schema_version":"1.0","item_id":"101735025257","canonical_url":"https://tw.bid.yahoo.com/item/101735025257","title":"Nakamichi STASIS PA-5II 後級擴大機日本中道Threshold(Nelson Pass)","subtitle":"STASIS 技術不僅讓 Threshold 成為 80 年代的高端代名詞，日本品牌 Nakamichi (中道) 也曾支付專利費授權此技術","condition":"近全新","currency":"TWD","observed_at":"2026-05-23T13:13:18.909Z","current_price":25000,"original_price":null,"stock_status":"low_stock","available_quantity":1,"sold_quantity":0,"seller":{"id":"Y5154305826","name":"收購音響0930939899","positive_rate":null,"rating_count":null},"images":[{"url":"https://img.yec.tw/ob/image/1c75ae5e-4908-41af-b587-f0d978eecd2e.jpg","role":"main","alt":"商品主圖","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/bc617873-1631-45d0-a39e-e66268896cd4.jpg","role":"detail","alt":"商品圖片 2","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/6b0c60f3-1eb7-491f-934c-5a2a82e68b3e.jpg","role":"detail","alt":"商品圖片 3","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/2152fbc4-1294-4ac4-8bdc-e6521b0a76db.jpg","role":"detail","alt":"商品圖片 4","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/b3a39efe-56be-41a6-abde-66be17788885.jpg","role":"detail","alt":"商品圖片 5","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/63869ea7-2ef1-4d60-86a9-98953288d86f.jpg","role":"detail","alt":"商品圖片 6","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/d3d84e4a-49f1-481b-99bd-57b2b02d34bf.jpg","role":"detail","alt":"商品圖片 7","width":null,"height":null}],"description":"功能聲音正常.無修無改.有著相當優秀的聲音表現...該型號搭載了由知名音響設計師 Nelson Pass 所開發的 STASIS 線路技術，以其低失真與強大的驅動能力聞名。聲音乾淨細緻好聽.特殊設計： 使用 470VA 環形變壓器及每聲道 12 顆功率晶體，並採用 Threshold 公司授權的 STASIS 無負回授線路。..另收購黑膠唱片cd 收購二手音響..。 聯絡資料於上方關於我。\n\n                                                                                                                \n\n                        \n\n                    \n\n                \n\n            \n            \n\n                            - 輸出功率： 每聲道 150 瓦 (8 歐姆負載)。\n                - 頻率響應： 7Hz 至 150kHz。\n                - 總諧波失真 (THD)： 小於 0.05%。\n                - 訊噪比 (S/N Ratio)： 120dB。\n                - 阻尼係數： 60。\n                - 重量： 約 21.5 公斤 (48 磅)。                    聲音特點與評價\n                                            - 溫暖細膩： 使用者在 MyAV 與 Hifi Chicken 分享，其音質乾淨細緻且帶有溫暖的色調，不像部分電晶體機那樣生硬。\n                        - 驅動實力： 即使是面對較難驅動的揚聲器（如靜電喇叭或現代落地喇叭），PA-5 II 仍能保持穩定的控制力與音場表現。\n                        - 耐用性： 被 Reddit 用戶形容為「像坦克一樣堅固」.....。STASIS 的核心運作原理\nSTASIS 的設計哲學是將輸出級分為兩個並行的部分：\n- 高精度電壓跟隨器 (High-Accuracy Voltage Follower)：\n這是一個小功率但極其線性的純 A 類放大器，負責「定義」輸出電壓的精準度。它始終處於穩定的運作狀態（即所謂的 \"Stasis\" 狀態），不受負載阻抗變化的干擾。\n- 大電流源 (Massive Current Source)：\n這是一個功能強大的電流輔助系統，負責提供驅動喇叭所需的大電流。它會根據負載需求同步增益，從而「減輕」了前面那個 A 類控制器的負擔。","shipping_methods":[{"name":"面交/自取/不寄送","fee":0,"currency":"TWD"},{"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":290,"watch_count":27}