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Yahoo Bid Home Appliances, Audio & Video, Camera Audio Equipment Amplifiers Tube Amplifiers Main Units
300B シングル ステレオパワーアンプ / PSVANE 300B / ゼネラルトランス PMF-10WS PMC-170M
        

  • Product Quantity
    : 1
  • Starting Bid
    :9,800円
  • Highest Bidder
    : 社会福祉法人 山根会 / Rating:3
  • Listing Date
    :2026年03月03日 15時55分
  • Bidding closes on
    :2026年03月08日 20時37分
  • Auction Number
    :u1221613151
  • 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)
国内アンプビルダー製作の 300B シングル・ステレオパワーアンプです。
20227月に私が購入した個体です。我が家に複数台ある真空管アンプの中で、本機は使用ローテーション入りを果たしていた3台のアンプの中の一つであり、気に入って使っていました。今回はコレクション整理のため、ここに出品します
 
■ 搭載真空管
- 出力管:300BPSVANE、購入時に新品)
- 初段管:6SJ7GT東芝製・中古
- 整流管:5AR4中国製・中古)
※出力端子は出力トランスのポート に接続されています。
 
■ トランス類(すべてゼネラルトランス製)
- 電源トランス:PMC-170M(購入時新品)
- 出力トランス:PMF-10WS
- チョークトランス:PMC-817H(購入時新品)
内部パーツは、私が購入した時点ではすべて新品でした。
 
■ 回路構成について
誠文堂新光社「作って楽しむ真空管オーディオアンプ」(ISBN 978-4-416-11374-5に掲載されている征矢進先生の 300Bシングル・ステレオアンプ製作記事をそのまま実機として組み上げたのかな、といった構成に見えます
 
■ 購入後に行った変更点
- シャーシ側面の化粧板を好みの色のものに交換
- 整流管を交換(付属していたものが初期故障のため)
- 初段管を東芝製 6SJ7GT に交換(ほかの球を試してみたくて交換)
 
■ 動作状態・気になる点
- 通常のリスニング位置では無音ですが、
 スピーカーに耳を近づけるとごく小さくですがハムノイズが聞こえます。
- 無信号時、ごくまれに非常に小さく「コソコソ」というノイズが出ることがあります。
 私の使用環境では問題と感じませんでした(個人の感想です)。
- 底板前面中央のネジ穴のタップが甘く、ネジが抜けやすい状態です。
 誤ってショートさせるのを避けるため、私はネジを外したまま使用していました。
 外していたネジも同梱します。
 
■ 外観・サイズ
- 幅:約37cm、奥行:約20cm(突起部除く)、高さ:約18cm
- 重量:約10kg
120サイズの強化段ボールで梱包して発送します。
※本体前面に貼ってある三角形のマークは、私がボリューム位置の目安として貼った付箋です。不要であれば簡単に剥がせます。
 
■ 付属品
- 購入時にビルダーさんから頂いた 説明テキスト・参考回路図
- 当初搭載されていた マツダ製 6SJ7GT ×2本(おまけ)
- 電源コード
 
■ 注意事項
本機はメーカー製ではなく、個人製作のアンプです。
必ず使用者様の目が届く環境でご使用ください。
中古品につきノークレーム、ノーリターンでお願いします。

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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: 300B シングル ステレオパワーアンプ / PSVANE 300B / ゼネラルトランス PMF-10WS PMC-170M
    Notes:
    Customer service hours:
    • Monday to Friday 10:00-18:00
    Customer service hotline:
    Customer Service Email: service@letao.my