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BOSE 1706Ⅱ アンプ ボーズ メンテナンス済み
        

  • Product Quantity
    : 1
  • Starting Bid
    :1円
  • Highest Bidder
    : ma********* / Rating:972
  • Listing Date
    :May 09, 2026 10:31
  • Bidding closes on
    :May 16, 2026 20:26
  • Auction Number
    :m1229288774
  • Condition
    :Damaged and stained (specify in description)
  • Automatic Extension
    :Yes
  • Authentication
    :No
  • 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】

BOSE 1706IIは、発売から20年以上が経過したヴィンテージ機材です。内部パーツ、特に「電解コンデンサ」は設計上の標準寿命(15~20年)を超えており、そのままの状態では本来の性能を発揮できません。

電解コンデンサが寿命を迎えると、内部の電解液が消失する「ドライアップ」現象が起き、等価直列抵抗(ESR)が増大します。これにより、音質の劣化やノイズの原因、動作不良を招くだけでなく、最悪の場合は液漏れによって基板そのものを腐食、破損させる恐れがあります。

また、出力リレーについても経年劣化による接点の酸化、摩耗は避けられず、音の途切れや出力不良の原因となります。

故障の予防と性能維持を目的としたパーツの保守交換を行いました。

交換パーツは、オリジナルと同等の容量/耐圧で揃え、寿命が長い製品を中心に選定しています。なお、使用したパーツはすべて正規ディストリビューター(秋月電子、千石電商、マルツ、Digi-Key、Mouserなど)から新品で購入したものを使用しており、粗悪なコピー品や長期在庫品は一切含まれません。

※追加画像(Google Drive)
https://drive.google.com/drive/folders/1ykiLAB38bhq6HY3dYVk-AlOA489qs8UD?usp=sharing

【メンテナンス内容】
・電解コンデンサ: 全数新品交換(低ESR・高耐久品を採用)
・リレー: 新品交換(オムロン製パワーリレー)
・パワーIC: 古いグリスを清掃後、熱伝導グリスを再塗布
・その他: RCA接点清掃、内部クリーニング
・DCオフセット計測:L ch -3.4mV / R ch -0.4mV

一般的に、パワーアンプのDCオフセットは ±50mV以内であれば正常、±20mV以内であれば優秀とされています。
LRの数値に差(3.0mV)がありますが、これは回路上の素子のわずかな個体差によるものです。10mV以下のレベルでこれほど揃っている個体は、同機種の中でも非常に良好な状態と言えます。

〈ラジアル型電解コンデンサ〉
LLS1V472MELZ x2
EEU-FR1V221 x2
EEU-FR1C101 x2
EEU-FR1V101 x2
EEU-FR1H100B x2
EEU-FR1E470B x2
EEU-HD1H2R2B x2

〈SMD型電解コンデンサ〉
EEE-FH1C470XL x2
EEE-FH1A101XL x1
EEE-HD1C220AR x1
EEE-HC1A330R x1
EEE-HD1H1R0R x1
UUP1H0R1MCL1GS x1
EEE-HD1C100AR x10
EEE-HD1H2R2R x2

〈リレー〉
G2R-2A4 DC24 x1

〈グリス〉
G-746 適量

【出品内容】
・BOSE 1706Ⅱ 1台
・取付ネジ 2本
・RCAキャップ 8個

※1枚目の画像のものが全てです
※テスターなど出品に関係のないものは含まれません

【注意事項】

動作について: 出品時に正常動作を確認済みですが、20年以上前の製品をベースとしたヴィンテージ品です。現時点での性能維持を目的とした整備品であり、将来にわたる動作を保証するものではありません。

商品状態: 閲覧環境により実物と色味が異なる場合があります。

業務用機の特性: 本機は業務用パワーアンプのため、使用環境(電源品質等)によっては動作音(唸り等)が発生する場合があります。

お取引について: 中古整備品であることをご理解いただき、ノークレーム・ノーリターンでお願いいたします。商品到着後は「受取連絡」をお願いいたします。

【免責事項】
本品は趣味の範囲でメンテナンスを施した個体です。万が一、本製品の使用により生じた事故、故障、損害(二次的被害を含む)について、出品者は一切の責任を負いかねます。すべて自己責任でのご使用をお願いいたします。

【その他】

BOSE AM-033、101MMも出品しています。
よろしければ出品ページをご覧ください。
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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
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: BOSE 1706Ⅱ アンプ ボーズ メンテナンス済み
    Notes:
    Customer service hours:
    • Monday to Friday 10:00-18:00
    Customer service hotline:
    Customer Service Email: service@letao.my