Vintage RCA 5879 Pentode Tube – Tests Good – USA Made

Up for sale is a genuine vintage RCA 5879 pentode tube that tests good and is ready for service.

The 5879 is a highly regarded sharp-cutoff pentode known for its low-noise characteristics and smooth, articulate response. Originally designed for industrial and communications applications, it later found favor in guitar amplifiers and studio equipment, where its unique tonal character and excellent gain structure have made it a sought-after choice among builders and vintage gear enthusiasts.

Features:

• Genuine vintage RCA 5879 pentode tube
• Made in the USA
• Tests good
• Low-noise design
• Excellent for vintage amplifier restorations and custom builds
• Strong, detailed tonal character
• Durable RCA construction

The tube has been tested and shows good performance with plenty of usable life remaining.

Whether you're restoring a vintage amplifier, building a custom project, or adding a quality RCA tube to your collection, this 5879 is a great example of classic American tube manufacturing.

Please review all photos for cosmetic condition.

Carefully packed and shipped to ensure safe arrival. Be sure to check out my other listings for additional vintage USA and European tubes, amplifiers, guitars, and musical equipment.

Thanks for looking!