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Yahoo Bid Home Appliances, Audio & Video, Camera Audio Equipment Amplifiers Tube Amplifiers Main Units
送信管 2C26 プッシュプルステレオアンプ 真空管パワーアンプ 新作 自作 
        

  • Product Quantity
    : 1
  • Starting Bid
    :35,000円
  • Highest Bidder
    : 風の翼 / Rating:493
  • Listing Date
    :2026年01月10日 22時08分
  • Bidding closes on
    :2026年01月17日 22時07分
  • Auction Number
    :w1212294893
  • 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)


*新作の送信管2C26プッシュプルステレオアンプの自作品です。
・外観は、写真の様に”2本角”があり、黄色の配線のトップがグリッドで赤色の配線のトップがプレートです。
・前段増幅はオペアンプと段間トランスで行うハイブリッドです。

*回 路
・2C26の規格は、三極管,ヒーター電圧6.3V 1.1A,プレート損失10Wです。
・規格表の標準動作は、プレート電圧400V、16mAなのでこれに近い動作としました。
・前記の様に増幅段はオペアンプで、出力段とは段間トランス(600Ω:10KΩ・CT)で結合し、動作は固定バイアスです。
・最大定格に近い動作なので、念のために低回転のファンによる軽い空冷としています。背面のON/OFFのスイッチがあります。
・固定バイアスのため、プレート電流監視の電流計を取付ています。
・オペアンプは8ピンの2回路、±20V電源でソケットを使用しているので、他のオペアンプへ差替え可能です。
・防熱管のためハム等のノイズは、当方のJBL2155H(102dB)でも問題ありません。

*音 質
・主観的な音質は、周波数特性は20Hzから20KHzまで約±1dBでフラットのため、どの帯域も過不足無い様に感じます。
・出力は約8Wで、プッシュプルアンプのため音に量感がある様に感じます。

*規 格
・入出力等は、入力インピーダンス:10KΩ : 出力インピーダンス:4・8・16Ω
・寸法等は、W=35cm・D=25cm・H=17cm(端子等含まず)/重量:約10kg
・真空管2C26は、HYTRON(軍規格)製の新品で、予備が1本付属します。

*その他
・トランス類等一部中古部品を使用しています。
・製作完了後100時間の動作確認(動作保証)をしています。
・自作アンプのため、製作中に小傷が発生しておりますので、美品を要求の方の入札はご遠慮ください。
・裏蓋がありませので、動作中及び電源切断直後(コンデンサーの中の電気溜り)にアンプの移動には注意が必要。
上記を考慮しての入札をお願いします。
・付属品は、写真の真空管、電源ケーブル、回路図、周波数測定表及び簡易な取説のみです。
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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: 送信管 2C26 プッシュプルステレオアンプ 真空管パワーアンプ 新作 自作 
    Notes:
    Customer service hours:
    • Monday to Friday 10:00-18:00
    Customer service hotline:
    Customer Service Email: service@letao.my