FAIRCHILD KM2485 Tube

( Brand: Fairchild ), ( Manufacturer Part Number: KM2485 ), ( Part Type: Tube ), ( Country/region Of Manufacture: United States )

Review FAIRCHILD Vintage Tube Model

Fairchild KM2485 Tube: A High-Quality Nuvistor for Amplification Applications

The Fairchild KM2485 tube, a remarkable piece of electronics engineering, is a Nuvistor (Nested-Vacuum diode) that offers exceptional performance in amplification applications. This innovative tube combines the advantages of a vacuum tube with the reliability and efficiency of a transistor, making it an ideal choice for audio and RF amplifiers, oscillators, and power supplies.

The KM2485 is renowned for its low noise figure, which contributes to superior signal quality in audio applications. Its low noise floor allows for clear, unadulterated sound reproduction, making it a popular choice among audiophiles and professionals in the audio industry.

This tube's high power handling capacity and efficient heat dissipation system ensure stable operation even under heavy load conditions. The KM2485 can deliver up to 200 watts of power, making it a reliable choice for high-power amplifier designs.

The Fairchild KM2485 tube's compact size and robust construction make it easy to integrate into various amplifier designs. Its pin configuration is standardized, enabling seamless replacement of older vacuum tubes in legacy systems.

Moreover, the KM2485 offers a high gain factor, allowing for design flexibility in amplifier circuits. Its linear response over a wide frequency range (from DC to several GHz) makes it suitable for a broad array of RF applications.

In summary, the Fairchild KM2485 tube is a versatile and high-performance Nuvistor, offering low noise, high power handling, and a compact design. Its wide range of applications, from audio amplifiers to RF amplifiers and oscillators, makes it an indispensable tool for electronics engineers and audio enthusiasts alike.

A Buying Decision for Fairchild KM2485 Tube: Pros, Cons, and Conclusion

1. High Linear Power: The KM2485 tube offers high linear power, making it suitable for powering speakers in home audio systems or amplifying audio signals in professional settings.

2. Low Distortion: This tube is known for its low distortion, which ensures a clean and accurate sound output.

3. Long Life Span: With proper care and handling, the KM2485 tube can last for thousands of hours, making it a cost-effective choice in the long run.

4. Vintage Appeal: For audiophiles who appreciate vintage equipment, the KM2485 tube adds a unique aesthetic to any audio system.

1. Fragility: Tubes are generally more fragile than solid-state components, and the KM2485 is no exception. They can easily be damaged during handling or installation.

2. Warm-Up Time: Tubes require a warm-up time before they reach their optimal operating temperature. This can be inconvenient in some applications.

3. Power Consumption: Tubes consume more power compared to solid-state devices, which can lead to higher operating costs.

4. Availability: Given its age, finding new KM2485 tubes can be challenging. You may have to buy them online or from specialized retailers.

The Fairchild KM2485 tube is an excellent choice for those seeking high-quality audio amplification with a vintage touch. Its low distortion, high linear power, and long life span make it a popular choice among audiophiles. However, its fragility, warm-up time, power consumption, and availability are important factors to consider before making a purchase.

If you are looking for a tube for a vintage audio system, the KM2485 is a great option. However, if you prioritize convenience, efficiency, and ease of availability, you might want to consider modern solid-state alternatives. Always ensure you have the necessary tools and knowledge to handle and install tubes safely and correctly.

Details:

Model KM2485.

part #: km2485 price

• $19.95

specifications tubesocketvintagego:

• brand: Fairchild
• mpn: Km2485
• part type: Tube
• country/region of manufacture: United States

seller tubesocketvintagego:

• rating: 99.4%
• # reviews: 7109
• city: Elk River, Minnesota

shipping tubesocketvintagego:

• carrier: USPS
• class: Standard
• type: Fixed
• service: USPS Ground Advantage
• cost: $8.95
• transit: 5-11 Days

payments tubesocketvintagego:

• other
• credit card: Mastercard
• wallet: Paypal

returns tubesocketvintagego:

• policy: No Returns

general tubesocketvintagego:

• condition: Used
• Vintage Audio Video > Vintage Parts Accessories > Vintage Tubes Tube Sockets

offer tubesocketvintagego:

• availability: In Stock
• started: July 19, 2025
• sold: 0
• quantity: 1
• options: Ship-to-home

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