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Yahoo Bid Home Appliances, Audio & Video, Camera Audio Equipment Other
【高純度アルミナ】 ファインセラミックス製 オーディオ インシュレーター【約Φ15サイズ】【Φ14.6×Φ4.4×8.1t】 匿名配送
 
        

  • Product Quantity
    : 1
  • Starting Bid
    :5,000円
  • Highest Bidder
    : / Rating:
  • Listing Date
    :2026年01月25日 10時57分
  • Bidding closes on
    :2026年01月31日 20時51分
  • Auction Number
    :x1217202673
  • Condition
    :New product
  • 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)
オーディオ愛好家から高い評価を受けている、音質を物理的に支える極めて希少な高純度アルミナ(Al2O3-99.6%)製インシュレーターです。
ルビーやサファイアと同じ化学式を持ち、モース硬度9というダイヤモンドに次ぐ硬度を誇るこの素材は、耐摩耗性・耐熱性・電気絶縁性に優れ、微細な振動や電磁的な影響を高精度で制御します。
スピーカーやDAC機器の潜在能力を引き出し、音像定位や空間表現の向上に貢献する高機能アクセサリーです。


■ 中空構造による共振分散と音質向上

中心部に穴を設けた円柱型構造が、内部共振モードを分散し、特定周波数でのピーク共振を抑制。
低域の膨張感を抑え、中高域の定位と輪郭が明瞭に。全帯域の抜けが良くなり、音像がくっきりと浮かび上がります。


■ 他素材との違い──なぜアルミナなのか

一般的なインシュレーターに使われる金属・木材・樹脂には、それぞれ音質に影響を与える特性があります。
  • 金属製:導電性や磁性により、誘導ノイズが発生するリスクがあり、機器の底部からノイズが混入する可能性があります。
  • 木材・樹脂製:柔らかく共振しやすく、振動制御が不安定になりがちです。
それに対し、アルミナは非導電・非磁性・高硬度・高密度を兼ね備え、ノイズ遮断と振動制御の両立が可能。

“音を飾る”のではなく、“音の本質を支える”素材として、オーディオ愛好家から高い信頼を得ています。


■ 活用される分野から見える素材の格

この高純度アルミナは、以下のような先端分野でも使用される工業グレードの精密素材です。

  • 半導体製造装置部品(高温・高電圧環境下での寸法安定性)
  • 航空宇宙分野(耐熱・耐摩耗性)
  • 医療機器(人工関節・歯科材料など)
  • 精密機械部品(高剛性・低熱膨張率)

これらの分野で求められる「変形しない」「劣化しない」「ノイズを出さない」という特性は、オーディオ機器の音質制御にも極めて有効です。


【仕様】

  • 純国産品(Made in Japan)
  • 高純度アルミナファインセラミックス製(Al2O3-99.6%)
  • 中心部穴あき円柱型構造
  • サイズ:約Φ15mm(詳細は品質証明書画像をご確認ください)
  • 8個セット


【使用例】

  • PCスピーカー、ブックシェルフスピーカー
  • 小型DAC、オーディオストリーミング機器
  • 木製インシュレーターとの併用による帯域調整
  • DAW/DTMなど制作環境でのモニター用途


【注意事項】

  • 表面に微細な加工痕が見られる場合がありますが、性能に影響はありません。
  • 落下や局所的な圧力により欠け・割れが生じる可能性があります。
  • 金属と擦れると金属微粒子が削れ、表面に黒色汚れが付着する場合があります。


金属・木材・樹脂製では満足できなかった方へ。
このインシュレーターが、音質の限界を超える一助となるはずです。
ぜひこの機会にご体感ください。
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Question list
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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
Singapore Package Import: Customs and Tax Policies
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-holdings.com 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: 【高純度アルミナ】 ファインセラミックス製 オーディオ インシュレーター【約Φ15サイズ】【Φ14.6×Φ4.4×8.1t】 匿名配送
    Notes:
    Customer service hours:
    • Monday to Friday 10:00-18:00
    Customer service hotline:
    Customer Service Email: service@letao-holdings.com