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Yahoo Bid Home Appliances, Audio & Video, Camera Audio Equipment Amplifiers General Kenwood
TRIO ka-8700 プリメインアンプ オーバーホール済み!VUメーター搭載機!繊細で濃厚な音質です!
     

  • Product Quantity
    : 1
  • Starting Bid
    :125,000円
  • Highest Bidder
    : / Rating:
  • Listing Date
    :2025年10月23日 18時22分
  • Bidding closes on
    :2025年10月30日 18時22分
  • Auction Number
    :p1194941298
  • Condition
    :Damaged and stained (specify in 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 product location is far from the overseas delivery address (Kanagawa), please pay attention to the Japanese shipping fee
TRIO ka-8700 プリメインアンプ オーバーホール済み!

の出品です。他にも色々と出品しております。ご参照下さいませ。

◎TRIOの高級プリメインアンプです。左右独立電源を採用し、VUメーター搭載と凝りに凝った、贅沢なアンプです。

コントロールアンプには、独自のNF-CR型トーンコントロール回路を採用し、音質を徹底的に追求しております。

◎◎◎音質は、主観ではございますが、わたしの好きなvintage SANSUI、Marantzのような、繊細でありながら濃厚な音質であります。

それでいて、圧倒的な表現を成す低音域は、音楽とは何か?と、改めて教えてくれる逸品と思います。

それに加え、パワーメーターの演出は、マニア心を揺さぶります。

是非、お手持ちのコレクションに、お加え下さいませ。

◎このアンプは、故障品を入手致しました。プロテクトがかかる状態でした。

原因は、メインアンプの電圧増幅回路の故障、イコライザーアンプの故障と、複合的な故障でした。

以下、修理、オーバーホールの内容です。

1)トーンコントロールアンプ



電解コンデンサをオーディオ用、ローノイズ品(全て日本メーカー品)に新品交換

フィルムコンデンサーを一部新品交換

半田修正

2)MCヘッドアンプ、フォノイコライザーアンプ



電解コンデンサを、オーディオ用、ローノイズ品に新品交換

トランジスタを、一部日本製トランジスタに新品交換

半田修正

3)電源回路


電解コンデンサを一部新品交換

半田修正

保護リレーを新品交換

3.5)

メインアンプ 電圧増幅回路

初段差動増幅回路のデュアルFETを、日本製品に新品交換

トランジスタを日本製トランジスタに新品交換

アウトプット電圧、バイアス電圧用調整半固定抵抗を、密閉型多回転高級品に、新品交換

ツェナーダイオードを、一部日本製品に新品交換

抵抗を、一部日本製品に新品交換

フィルムコンデンサーを、日本製品に新品交換

コンデンサーを、オーディオ用、ローノイズ品日本製に新品交換

3.6)電力増幅回路

半田修正

3.7)パワーメーターランプを、超光輝LEDに改造

これにより、オリジナルより物凄く明るくなりました。

4)接点類をメンテナンス

5)メインアンプ アウトプット電圧調整、バイアス調整

イコライザーアンプ アウトプット電圧調整




以上となっています。このくらいしないと、すぐ故障してしまいます。交換部品は、約100個以上です。

◎交換部品は、全て日本製で、新品交換しております。



◎オーバーホールにより、主観ではございますが、ダイナミックであり、まさに圧倒的な表現力になりました。

ご参考下さいませ。




素晴らしい音質を奏でてますが、この後の動作を保障するものではありません。

外観を気になる方はご遠慮くださいませ。

傷、汚れ、サビ、他ございます。


また、新品当時の状況を、求められる方も、ご遠慮くださいませ。 外観を含め、他見落としがある場合は、ご了承くださいませ。

あくまでも中古品ですので、苦情、返品はお受け致しません。現状渡しでお願い致します。

◎ご連絡は、24時間以内に出来る方、お支払いは72時間以内に出来る方、受け取り通知を速やかに出来る方のみ、ご入札をお願い致します。


◎古物商許可証 第904112110024 福岡県公安委員会


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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 Get Your Limited-Time International Shipping Discount Now!
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: TRIO ka-8700 プリメインアンプ オーバーホール済み!VUメーター搭載機!繊細で濃厚な音質です!
    Notes:
    Customer service hours:
    • Monday to Friday 10:00-18:00
    Customer service hotline:
    Customer Service Email: service@letao.my