AMPEREX 5866A-7986 Vacuum Tube X-11 TB2.5-400 G58

( Brand: Amperex ), ( Manufacturer Part Number: 5866A/7986 ), ( Type: Vacuum Tube )

Review AMPEREX Vacuum Tube Untested G58

The Amperex TB2.5-400 G58 X-11 is a vintage vacuum tube that showcases the engineering prowess of the mid-20th century. This tube, with the model number 5866a-7986, is a TB2.5 type, which is commonly used in various radio, television, and audio applications.

The TB2.5-400 is a dual triode vacuum tube, meaning it contains two separate triode stages within the same glass envelope. Each triode is capable of amplifying an audio signal, making it ideal for use in pre-amplifiers and power amplifiers. The tube is designed to operate at a plate voltage of 400 volts, providing ample power for driving speakers in high-fidelity audio systems.

The Amperex TB2.5-400 G58 X-11 is a G58 type, which means it features a large glass envelope, allowing for a larger plate and grid structure. This larger structure allows for more efficient heat dissipation, reducing the risk of thermal runaway and extending the lifespan of the tube. The X-11 designation indicates that this is a high-quality, long-life version of the tube, making it a reliable choice for vintage audio enthusiasts.

Physically, the TB2.5-400 is a beautiful piece of engineering. The tube is encased in a thick, clear glass envelope, which allows for easy visual inspection of the internal components. The filament is located at the base of the tube, with the two triodes arranged in a linear fashion along the length of the tube. The tube is topped with a metal cap, which serves to shield the internal components from external contamination.

In conclusion, the Amperex TB2.5-400 G58 X-11 is a versatile and reliable vacuum tube that continues to be sought after by vintage audio enthusiasts. Its large glass envelope and dual triode design make it a powerful and efficient amplifier, while its high-quality construction and long-life design ensure that it will continue to provide reliable service for many years to come.

1. High quality: Amperex is a well-known manufacturer of vacuum tubes, and their products are known for their high quality and reliability.

2. Wide range of applications: TB2.5-400 tubes are used in a variety of applications, including audio amplifiers, radio receivers, and oscilloscopes.

3. Long lifespan: Vacuum tubes have a longer lifespan than solid-state components, and they can provide a more authentic and warm sound in audio applications.

4. Availability: Amperex tubes are widely available and can be easily purchased from various online retailers.

1. Higher cost: Vacuum tubes are generally more expensive than solid-state components, which can be a deterrent for some buyers.

2. Limited availability of certain models: While Amperex is a well-known manufacturer, some models of their tubes may be harder to find, which can make them more expensive or require a longer wait for delivery.

3. Requires more maintenance: Vacuum tubes require more maintenance than solid-state components, such as regular cleaning and alignment, which can be time-consuming and require specialized tools.

The Amperex TB2.5-400 G58 X-11 vacuum tube is a high-quality and reliable option for a variety of applications. While it may be more expensive than some solid-state alternatives, its long lifespan, wide range of applications, and authentic sound make it a worthwhile investment for many users. However, potential buyers should be aware of the maintenance requirements and limited availability of certain models.

If you are in the market for a vacuum tube and are looking for a reliable and high-quality option, the Amperex TB2.5-400 G58 X-11 is a solid choice. However, be sure to research the specific model you are interested in to ensure it is widely available and fits your needs. Additionally, be prepared to invest in the necessary maintenance tools and time to keep your tubes in optimal condition.

Details:

Up for offer Amperex 5866a 7986 vacuum tube tb2. Please view photos to what all is present included and feel free ask questions. M x-11 made in Francine nice clean condition.

Being sold as is there is a spot the has piece missing in collar that around four pins please see photo for best and what included buyer to pay shipping of 7. On the day offer closes. It is shown in the last photo what you see photos what included.

part #: 5866a7986 price

• $199.00

specifications tubesocketvintagego:

• brand: Amperex
• mpn: 5866a/7986
• type: Vacuum Tube

General tubesocketvintagego:

• consumer electronics > vintage electronics > vintage audio video parts accessories consumer electronics > vintage tubestubes sockets audio
• in stock: Yes

Ratings:

1. Great collection of old books. Hours of enjoyment. Thanks! 05-25-17
2. GREAT ITEM - GREAT PACKING 05-24-17
3. Item received in great shape! 05-23-17
4. Arrived exactly as described. Fast shipping and packaged well. Would buy again 05-25-17
5. good deal thanks 05-25-17

Seller tubesocketvintagego:

• city: Harborcreek, Pennsylvania
• zipcode: 16421

Returns tubesocketvintagego:

• time: 14 Days
• type: Money Back
• policy: returns accepted
• paid by: Buyer

Offer tubesocketvintagego:

• Sold: 0
• quantity: 1
• bids: 0
• min. bid: $14.99
• best offer: false
• Started: May 25, 2017, 7:00 pm

Shipping tubesocketvintagego:

• handling: 1 days
• cost: $7.5
• type: Flat

Payments tubesocketvintagego:

• PayPal

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