
( Brand: Tung-sol ), ( Manufacturer Part Number: 85A2 ), ( Model: 0G3/85A2 ), ( Part Type: Vacuum Tube ), ( Country/region Of Manufacture: United States )
The Tung-Sol 85A2 vacuum tubes, also known as the 0G3/85A2 NOS (New Old Stock) tubes by Tektronix, are a must-have for electronics enthusiasts, audio engineers, and vintage radio aficionados. These tubes are known for their exceptional performance and reliability, making them an ideal choice for various applications.
Each Tung-Sol 85A2 tube is a dual triode vacuum tube that operates on a driven tetrode principle. It is designed to deliver a high plate current, capable of handling up to 500 milliamperes. The tube's control grid is capable of handling a maximum voltage of 230V and a maximum plate voltage of 350V, making it a versatile component for both high and low voltage applications.
The Tung-Sol 85A2 offers an excellent gain of 30 and a high plate resistance of 2,000 ohms. It features a filament voltage of 6.3 volts, with a filament current of 450 milliamperes. This tube's heater is directly heated and designed to provide stable operating conditions, even when the circuit's power supply voltage varies.
The Tung-Sol 85A2 NOS tubes by Tektronix are essential for various applications such as audio power amplifiers, vacuum tube radio receivers, high voltage amplifiers, and many more. These tubes offer a warm, rich sound that is often preferred over solid-state components for music reproduction.
One of the reasons why collectors and enthusiasts prefer the Tung-Sol 85A2 NOS tubes is due to their reliability and longevity. As New Old Stock, these tubes have been stored in optimal conditions, ensuring they maintain their original specifications and are free from aging issues commonly found in older tubes. This makes them an excellent investment for those seeking a high-performance vacuum tube component that can deliver consistent and satisfying results.
Furthermore, the Tung-Sol 85A2 NOS tubes are built with the highest-quality materials, including a fine-meshed grid and heavy-duty tantalum filament. This not only contributes to their long lifespan but also their ability to handle high power levels without degrading in performance over time.
In conclusion, the Tung-Sol 85A2 NOS vacuum tubes by Tektronix are a superior choice for various applications that require high-performance vacuum tubes. With their impressive specifications, reliable construction, and warm, rich sound, these tubes offer a unique character and tonal brilliance that is unmatched by solid-state components. For electronic enthusiasts and professional audio engineers, the Tung-Sol 85A2 NOS tubes are an essential addition to their toolkit.
Tung-Sol 85A2/0G3 vacuum tubes, manufactured by TEKTRONIX, are triode vacuum tubes commonly used in various electronic applications due to their excellent performance. Considering the pros and cons of buying these tubes for your project can help in making an informed decision.
**Pros:**1. Superb Quality: Tung-Sol 85A2/0G3 vacuum tubes are known for their superior quality and reliability. Te FORVAC bottles are high-quality, thick-walled, and have snap-on bases, making them durable.
2. Consistent Performance: These tubes offer consistent performance throughout their operational life, ensuring stable output and minimal variance in characteristics.
3. Availability: Tung-Sol vacuum tubes are relatively easy to find on the aftermarket through various tubes suppliers and online stores, making them readily available for hobbyists and professionals.
4. Recontrable: Should these tubes fail or display any issues, spare parts, such as heaters, grids, and plates, are easily accessible from various vendors.
**Cons:**1. Vacuum Leaks: Due to their age, Tung-Sol 85A2/0G3 vacuum tubes can sometimes develop vacuum leaks, which would degrade their performance and accuracy in applications demanding high vacuum conditions.
2. Higher Cost: Compared to newer solid-state components, vacuum tubes like the Tung-Sol 85A2/0G3 are noticeably more expensive, making them a less cost-effective option for those on a tight budget.
3. Limited Lifespan: Although known for their reliability, vacuum tubes like the Tung-Sol 85A2/0G3 have finite lifespans, meaning they may eventually require replacement, making them less desirable for long-term projects or applications requiring constant use.
**Conclusion:**Tung-Sol 85A2/0G3 vacuum tubes, produced by TEKTRONIX, are excellent choices for those seeking high-quality and reliable vacuum tubes for projects or applications that value excellent performance and consistent output. However, these tubes may not be ideal for those with limited resources due to their higher cost, shorter lifespan, and potential for vacuum leaks.
**Recommendation:**Considering the pros and cons, if the project allows for vacuum tubes' slightly higher cost and potential issues, Tung-Sol 85A2/0G3 tubes can be a fantastic choice with their incredible consistency, performance, and high-quality construction. Make sure to always check for vacuum leaks and test tubes before use for optimal performance.
Pair Tung-Sol Tektronix tested 0G3/85A2 NOS same code 3226249 249 smoked glass Vacuum Tubes.