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Yahoo Bid Hobbies & Crafts Musical Instruments Guitars Electric Guitars Guitar Amplifiers Combo Yamaha
YAMAHA ヤマハ G20-110Ⅲ ギターアンプ 1980年代製 ジャパンビンテージ 電解コンデンサ全51個交換済 整備済 エレキギター バイアス調整済み
        

  • Product Quantity
    : 1
  • Starting Bid
    :6,980円
  • Highest Bidder
    : m_m******** / Rating:140
  • Listing Date
    :2026年03月01日 22時01分
  • Bidding closes on
    :2026年03月08日 21時59分
  • Auction Number
    :t1221390153
  • 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. The seller does not provide return compensation and other responsibilities
◇ YAMAHA G20-110Ⅲ ◇
1980年代製 ジャパンビンテージ / 電解コンデンサ全交換済み 再生整備完了個体
■ 商品説明

YAMAHA(ヤマハ)製
1980年代製 ジャパンビンテージ ギターアンプ G20-110Ⅲ の出品です。

本機は下記整備を実施した再生個体です。

電解コンデンサ全51個交換済み
・ノイズ原因除去済み
・電源安定化処理済み
・出力段バイアス最適化済み

1980年代に製造された日本製モデルで、
YAMAHAらしい堅実でしっかりとした筐体設計と内部構造が特徴です。

シャーシ剛性や基板レイアウトも丁寧に作られており、当時の国産アンプの完成度の高さを感じられる一台です。

経年劣化による不安要素を根本から対策し、長期使用を前提とした整備を行っております。
■ 動作確認

自宅環境(AC100V)にて以下を確認済みです。

・通電:確認済み
・INPUTからの出音:確認済み
・スプリングリバーブ動作:確認済み
・全コントロール動作確認済み
・ガリ/ノイズ:無し

出荷前にも最終動作確認を実施いたします。
■ 整備内容

● 電解コンデンサ全数交換(合計51個)
経年劣化によるリークノイズおよび電源不安定要素を根本改善。
電源部・信号系を含む電解コンデンサを全交換しております。

耐圧 容量 交換数
10V47F2個
16V10F34個
16V22F3個
16V47F2個
35V100F2個
35V2200F2個
50V0.47F2個
50V1F4個

電源平滑コンデンサ(2200F)も交換済みのため、 電源安定性は大きく向上しております。

● 全ポット洗浄・接点処理
TREBLE/MIDDLE/BASSのガリを改善済み。

● 出力段バイアス調整済み
出力トランジスタ:D526 / B596(準コンプリ構成)
エミッタ抵抗両端 5.0mV(約23mA相当)にて実測調整。
安全マージンを考慮したセッティングです。
◇ 製品の特長 ◇
20W出力ながら25cmスピーカー搭載、
パラメトリックEQ搭載の本格仕様。

クリーンからドライブサウンドまで幅広い音作りが可能です。

自宅使用・スタジオ練習に適した実用出力。
重量約13.6kgの堅牢な筐体は安定感のある鳴りを実現しています。
■ 主な仕様

出力:20W
スピーカー:JA2531(25cm/8Ω)×1
リバーブ:スプリングタイプ
電源:AC110V 50/60Hz
消費電力:35W
サイズ:468 × 400 × 243mm
重量:約13.6kg
■ 外装コンディション

・外装に傷、スレ、くすみあり
・金属部に軽度のサビあり

内部・外装ともに分解清掃済みです。
商品の状態は写真を優先とさせていただきます。
◇ 付属品 ◇
・無し
※電源ケーブルは本体から直接出ているタイプです。
◇ 発送について ◇
・佐川急便 着払いにて発送いたします。
・梱包はプチプチ+段ボールにて厳重梱包。
・梱包後サイズは130~140サイズ前後を想定しております。
・正式なサイズは発送時に確定いたします。

破損防止を最優先に梱包いたします。
■ ご注意

出品時点で動作確認済みです。
出荷前にも最終確認を行います。

中古機のためノークレーム・ノーリターン(NO/NC)にてお願いいたします。
ご不明点は必ずご入札前にご質問ください。



(2026年 3月 2日 22時 30分 追加)
■ 追加(2026年3月2日 修正)
電解コンデンサ容量の単位表記について、
「F」となっておりましたが、正しくは「uF(マイクロファラッド)」です。
交換数および整備内容に変更はありません。
単位表記のみの修正となります。
正しい容量表記は以下の通りです。
【電解コンデンサ交換内訳(正)】
10V 47uF × 2個
16V 10uF × 34個
16V 22uF × 3個
16V 47uF × 2個
35V 100uF × 2個
35V 2200uF × 2個
50V 0.47uF × 2個
50V 1uF × 4個
合計 51個交換済み
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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: YAMAHA ヤマハ G20-110Ⅲ ギターアンプ 1980年代製 ジャパンビンテージ 電解コンデンサ全51個交換済 整備済 エレキギター バイアス調整済み
    Notes:
    Customer service hours:
    • Monday to Friday 10:00-18:00
    Customer service hotline:
    Customer Service Email: service@letao.my