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Yahoo Bid Home Appliances, Audio & Video, Camera Audio Equipment Amplifiers General LUXMAN
LUXMAN 真空管パワーアンプ LUXKIT A3550 要整備品
        

  • Product Quantity
    : 1
  • Starting Bid
    :55,000円
  • Highest Bidder
    : / Rating:
  • Listing Date
    :2026年03月08日 13時51分
  • Bidding closes on
    :2026年03月10日 07時17分
  • Auction Number
    :o1222179419
  • Condition
    :State it in the description
  • Automatic Extension
    :Yes
  • Authentication
    :Yes(Description)
  • Early Closing
    :Yes
  • Can I return the product?
    :no
  • Description
  • Q&A ()
  • Cost Estimator
  • Problem Item Response Procedur
Notes
  1. Plug-in electrical appliances are only shipped by air (shipping by sea requires commodity inspection)
  2. The seller does not provide return compensation and other responsibilities

商品説明


LUXMAN 真空管パワーアンプ LUXKIT A3550 要整備品 ボンネット付
ご覧いただきまして誠にありがとうございます。
10年程度前に状態の良い動作品を中古で入手しました。
以降、同じく真空管のプリアンプのCL-36と組み合わせ、
自宅で時折稼働させ、至福のひと時を楽しんでおりました。
ここのところ忙しかったので、この度半年程度開けて、
久しぶりに作動させたのですが、
どうも左側の音が出力されてない状態となっておりました。
気に入って愛用していたアンプなだけに手放すのは忍びないですが、
どなたかメンテナンスできる方に引き継いでいただきご活用頂ければと存じます。
 出品内容は本体のみです、状態について添付写真にてご確認ください。 
尚、商品は中古品とのご理解の上、ノークレーム・ノーリターンでよろしくお願い申し上げます。  
何かご不明な点ありましたらお気軽にコメントください。 
  • LUXKIT A3550

     
  • ¥158,000(1984年頃)
 解説 
ビーム管接続と3極管接続が選べるステレオ/モノラルパワーアンプキット。

A3550は米国GE社が開発した高信頼大出力用ビーム管6550Aを用いたステレオパワーアンプがベースとなっています。
回路方式は音作りの原点を見直して広帯域かつ低歪が特徴のウィリアムソン型の利点を活かしつつ、多重NFBを排した独自な回路に仕上げることで音質面での向上を図っています。
ウィリアムソン型は広帯域OPT(アウトプットトランス)を用いての高帰還アンプが基本的な形ですが、A3550ではOPTに定評のあるOY15型のハイパワータイプを新たに設計し採用し、さらにスタガー・レシオを充分にとって安定したNFBを可能にしています。そしてNFB量を極力低減することによって過渡応答や動特性を向上させています。

A3550では、3つの選択ポイントによって8種類のモードが選べます。
まず、組立時にビーム管接続と3極管接続が選択できます。その上で組立完了後はNFBとNON-NFB、ステレオとモノラルがスイッチ操作で切替できます。

トランスは全てA-3550のために新規設計されたものを採用しています。
また、音響用非磁性体抵抗やブラックゲート・S・ブロックコンデンサ、無酸素銅配線材、MDコンデンサなどを極性管理した上で採用するとともに、キットで始めてACラインのチェック機構「ラインフェーズ・センサ」を搭載しています。

底板など音質上必要な部分に銅メッキ処理を施すなど細かい配慮がされています。
機種の定格
型式管球式パワーアンプキット
stereomono
ビーム管接続3極管接続ビーム管接続3極管
NFBNON-NFBNFBNON-NFBNFB
実効出力50W30W100W60W
全高調波歪率1%以下3%以下0.5%以下1%以下3%以下0.5%以下
出力インピーダンス
周波数特性10Hz~40kHz
-1dB以内
30Hz~20kHz
-1dB以内
10Hz~30kHz
-1dB以内
30Hz~18kHz
-1dB以内
10Hz~40kHz
-2dB以内
10Hz~30kHz
-2dB以内
入力感度1.1V1.0V1.5V1.1V1.0V
入力インピーダンス80kΩ
SN比(IHF-A、入力ショート)106dB以上100dB以上105dB以上102dB以上107dB以上105dB以上
残留雑音0.3mV以下0.6mV以下0.25mV以下0.3mV以下0.35mV以下0.4mV以下
消費電力200W
外形寸法幅465x高さ176x奥行226mm
重量18kg


以上の説明文をご理解の上ノークレーム・ノーリターンにご同意頂ける方のみの御入札を宜しくお願い申し上げます。

★尚、落札決定後のキャンセル・値引き交渉には応じられませんのでお気を付け願います。

 
●皆様の入札をお待ち致しております。


★【御入札・お取引に関しての注意事項】★
 
入札終了後のトラブルを回避する為に、次の方は御入札をお控え願います。
 
①新規の方
 
②「悪い」・「非常に悪い」の評価が著しく多い方(当方の判断による)
 
③落札後購入の意志が無い方
 
④落札後、当日を含めて2日以内に取引ナビでの御連絡、また3日以内に決済を頂けない方
 
⑤出品時の商品説明を熟読の上その内容を御了承・御承諾頂けない方
 
※ 尚、①②に該当すると当方が判断致しました場合、既に御入札を頂いていても強制的に入札を削除させて頂きます。
 
 お互いに気持ちの良いお取引が出来ますよう宜しくお願い申し上げます。【出品者】
 
★Goods can NOT be sent to overseas..I'm sorry!★

The product has been closed, and you cannot ask questions.
Question list
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After the seller responds, the original page will display the question
Product Price JPY
Japanese Consumption Tax(10%) JPY

A 10% consumption tax is applied to goods and services in Japan. The price may include the tax or it may be added separately. Please check the price details when ordering.

Note: This is a domestic sales tax applied within Japan.

Japan Local Shipping Fee JPY Japan Local Shipping Fee Reference
Product Weight KG The maximum weight limit is 30 kg
International Shipping Methods
Proxy bidding and purchasing services are becoming increasingly convenient. However, overseas shopping carries certain risks and issues. To reduce these risks and enhance shopping safety, please be sure to read the following information:

1. International Shipping

   Air Freight: If the item status is not confirmed within two days after the arrival notice, any customer complaints cannot be addressed with the seller.

2. After Receiving the Product

Please confirm and inspect the product as soon as possible to ensure that the product specifications, quantity, accessories, and description are correct

If, unfortunately, there are any issues, you can refer to the following examples on how to report related product problems:
1. Example of missing product information
2. Example of product not matching provided information
3. Example of damaged product information

Important Notes: 1. If the seller is unwilling to ship overseas or is unaware that the product will be shipped overseas, the international shipping cost for returns or exchanges will need to be borne by the member. You may refer to the EMS e-Express fee inquiry from the post office. If it involves alcoholic beverages or items that affect flight safety, the post office cannot be used for shipment, and only DHL can be used to ship back to Japan.
2. During the product complaint handling period, please retain the complete outer packaging of the product (including the shipping label information), and refrain from attempting any repairs or altering the original condition. Any modifications may result in the inability to process the case.

3. After Inspecting the Product

After receiving and inspecting the item, if you have any questions, it is recommended to contact Letao within 2 hours. Here are some reminders:

1. Please do not unpack, use or repair the received item yourself, and be sure to keep the original packaging to facilitate subsequent handling of related matters, so as to avoid changes to the item that may cause the seller to be unwilling to process.

2. You can call customer service, and the customer service will leave a message for you as below. Please provide the following information:
"Hello, we will first help you establish a complaint case for Product ID: _______ .But we need you to 2-3 clear photos of the product issue, including photos of the product problem, product packaging, shipping details slip, and outer box. Send them to service@letao.my and inform us of your desired resolution (failing to provide this may result in an inability to process subsequent matters). After sending the email, notify us in the customer service message. We will confirm with the seller as soon as possible. and if there are any related questions, we will contact you through the customer service message. Thank you for your cooperation."

Please provide:
1. "Product ID"
2. Photo of the "Delivery Note" (if any)
3. Photos of the outer box (including inner and outer packaging)
4. Photos of the product (Please include relevant descriptions to help us confirm with the seller)

Important Notes:
1. Do not include foreign text or other products in the background of the image.
2. Please keep the complete product packaging (including the shipping label information), and refrain from repairing or altering the original condition on your own, as any changes may result in the case being unable to be processed.
3. Please provide the relevant information within 48 hours to avoid missing the golden hour for reflection and causing situations that cannot be handled.
4. Due to 99% of Japanese sellers being unwilling or unaware of shipping goods overseas, if a seller is willing to handle the issue, the goods must be sent back to Japan, and the international shipping costs incurred must be borne by the member. Letao will use postal EMS international express to send the goods back to Japan.
5. As the goods are purchased from overseas, it may take approximately one to two weeks to complete the relevant processing procedures when issues arise with the goods. Please be reminded that you can inquire about the approximate cost through the EMS service at the post office.

4. FAQ

1. Issue of Authenticity: If antique or branded goods are found to be counterfeit upon receipt, clear photos showing the differences between the genuine product and the imitation must be provided as evidence. If unable to provide relevant proof, assistance can be sought to find a third-party reputable organization for a premium authentication service .
2. Leaking Iron Teapot: If an antique iron teapot is leaking, please take clear photos of the leaking area and provide them.
3. Transport Damage: If the goods are damaged during international shipping (to the pickup point), you need to provide photos of the outer packaging of the parcel and clear photos of the damaged goods' outer packaging.

※ Note: Photos provided to sellers should not contain any foreign-related information.
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    Product name: LUXMAN 真空管パワーアンプ LUXKIT A3550 要整備品
    Notes:
    Customer service hours:
    • Monday to Friday 10:00-18:00
    Customer service hotline:
    Customer Service Email: service@letao.my