Toshiba - 12AU7A 高保真真空管 GM 测试 音频组件

标题：4 件 NOS Toshiba 12AU7A Hi‑Fi 真空管套装 - 日本制造 - GM 测试（TV-7B/U）

描述：
拍卖的是一套高级的四（4）只 Toshiba 12AU7A 真空管，原厂新旧库存（NOS），来自日本管件制造的黄金时代。这些管属于 Toshiba 传说中的“Hi-Fi”系列，专为高保真音频设备设计，具有极低噪声和丰富、细腻的声音特性。

关键特性：
Origin: Genuine Made in Japan by Tokyo Shibaura Electric (Toshiba).
Condition: Unused New Old Stock (NOS) in their original vintage orange and black "Hi-Fi" boxes.
Construction: Robust grey plates with top-side getters, known for stability and longevity.
Performance: The "Hi-Fi" branding ensures these were manufactured to the highest standards for audio applications.

Testing & Quality Control:
These tubes have been professionally tested on a **Hickok TV-7B/U Military Standard Tube Tester**. The TV-7 is renowned for its accuracy and is the gold standard for vintage tube testing.

The test results (GM values) are clearly marked on each tube:
1. **107 / 104**
2. **104 / 106**
3. **116 / 112**
4. **118 / 119**
(Note: These values indicate strong, healthy emission far exceeding minimum requirements.)

This is a rare opportunity to acquire a matched-performance set of Japanese-made 12AU7A tubes in pristine, unused condition. Perfect for high-end preamps, buffers, and guitar amplifiers.

Important Notice: Shipping Suspension to Specific Regions
Due to the worsening situation in the Middle East and its impact on international flight schedules, we have decided to suspend shipping to the following countries until further notice.
Middle East: Israel, Iran, Iraq, Lebanon, Jordan, Syria, Yemen, and all other countries in the region.
Europe & Africa: Ireland, Azerbaijan, Armenia, Greece, Croatia, Georgia, Czech Republic, Norway, Hungary, Bulgaria, Algeria, Angola, Uganda, Ghana, Zambia, Sudan, Tanzania, Botswana, Mozambique, etc.
If an order is placed for any of these destinations, we will have to cancel it. We apologize for the inconvenience and appreciate your understanding.


Shipping Policy: We will ship your order with a tracking number within 1-3 business days after payment confirmation.

Disclaimer: Please note that the product description above was generated with AI assistance. As there may be potential inaccuracies, please refer to the provided photos and the official manufacturer's website for the most accurate and definitive information.

Terms and Conditions
1. What is included in this item is only what is shown in the picture. Please note that batteries and other items not shown in the picture are not included.
2. Import duties, taxes, VAT (Value Added Tax), and other charges are not included in the item price or shipping cost. These costs are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.
3. When purchasing a lens, please note that any issues arising from the use of third-party mount adapters are not covered under warranty.
4. Condition ratings and descriptions are based on the seller's subjective evaluation. Since the perception of an item's condition can vary between individuals, please carefully review all provided photos and place your bid based on your own judgment and responsibility.
5. In the event that you are not satisfied with the item or find any discrepancies with the description, the item must be returned to the seller first. A refund will be processed immediately upon the safe return of the item. All return policies are governed by Catawiki's terms and conditions.
6. By placing a bid, you are deemed to have read and agreed to all the terms and conditions stated above.