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Yahoo Bid Home Appliances, Audio & Video, Camera Audio Equipment Amplifiers Tube Amplifiers Main Units
分解整備しました SQ-38D プリメイン真空管アンプ
        

  • Product Quantity
    : 1
  • Starting Bid
    :10,000円
  • Highest Bidder
    : dur******** / Rating:104379
  • Listing Date
    :2026年04月29日 10時10分
  • Bidding closes on
    :2026年05月06日 21時49分
  • Auction Number
    :f1228208987
  • 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)
  2. The remittance needs to be completed within the time required by the seller
修理を楽しんでいるうちにアンプが増えすぎ、不用品で出品します。
本機は全部品を取り外し点検の上、劣化部品を交換し組み立て調整したSQ-38D真空管プリメインアンプです。
交換した主な部品は、ゲッターの薄い出力管6RA8 1本、6267 1本、音量・音質等全VR、全入力ピン、全真空管ソケット、全電解コンデンサー、カップリング等の全オイルコンデンサー、抵抗値の変わった抵抗やDCバイアス・バランス用半固定抵抗、全配線・ラグ端子、3Pインレット・電源コード、ヒューズフォルダー、ACコンセント、DINコネクター、バナナプラグ対応スピーカー端子、電源整流ダイオード等です。
スイッチ類は分解洗浄、シャーシはさびとヤニ落としを行ったうえで組み立て、回路電圧・オシロによる波形等の確認、バイアス・バランスの調整を行い初期の状態に近づけました。
バイアス回路はLRchきめ細かく調整できるよう分離した回路と、ユーズドコンセントを3Pインレットに変えた他はオリジナルのままです。
出品前に各電圧やバイアス・バランスを確認して性能をチェックしました、プレートに339Vバイアスは-31~−33 VIP 25Aとし、最大出力はオシロで観測波形が歪む手前でLch10.5WRch10.8Wと出力管・出力トランスは十分に良い状態です。歪み率は1W出力で0.1%10W出力でも0.3%と真空管アンプとしては優秀です。10Wの出力は現代アンプと比べ小さいように感じますが、よほど能率の悪いスピーカーでなければ家庭で使うには出力不足は感じられません。周波数特性も20Hzから20KHzまでほぼフラットと初期の性能に近いと思います。それと、特にラックスの出力トランスは劣化(巻き線の高抵抗化)が心配されますDC抵抗ですが Lch P1B 181Ω、P2B 169Ω、Rch P1B 176Ω、P2B 174Ω、巻き線間・ケース間の絶縁等は∞と良好です。
全真空管は手持ちの真空管試験機で正常動作範囲内を確認、出力管6RA8gm1170012000と良好です。
各入力、各切り替え、トーンコントロールの動作は問題ありません。MCカートリッジの繊細なサウンドを楽しめ、ノイズやハム音はほとんど聞こえません。
AC入力ライン側の絶縁は対アース、500Vメガーで100MΩ以上と良好です。希少な出力管6RA8はゲッターも写真の様に有りまだ十分で使えるでしょう。
外観です、ウッドケースは剥がれや欠け・割れ退色がありましたので補強・補充等を行いサンダーの上ニス塗りを行いましたが少しむらがあります。
以上現状動作品ではありますが製造より約半世紀を経過した年代物ですので何時如何なる不具合を発症するかは不明です、その事の御理解をお願い出来る方の御入札をお願いします。又到着時音が出ない、使えない機能等が有る以外はNC,NRでお願いします。取説コピーや電圧等を記入した回路図を添付します。最近落札者様と連絡が取れない事象が発生いたしました。24時間以内に連絡をお願いいたします。私のほうはスムーズな発送を心掛けます。
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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: 分解整備しました SQ-38D プリメイン真空管アンプ
    Notes:
    Customer service hours:
    • Monday to Friday 10:00-18:00
    Customer service hotline:
    Customer Service Email: service@letao.my