CUNNINGHAM CX301-A Vacuum Tube Early Power Amplifier Vintage Radio Parts. Country/Region of Manufacture: USA. Tube Type: Early Power Amplifier Tube. This listing is for a vintage and collectible CUNNINGHAM CX301-A vacuum tube, a classic early power amplifier or general-purpose triode from the golden age of radio. This tube is in used condition. It has been inspected and tested by our company to ensure basic functionality. It is not new old stock (NOS). The CX301-A, belonging to the iconic’01A’ family, was a foundational component in early battery-operated radio receivers. It served various roles, including radio frequency (RF) amplification, audio frequency (AF) amplification, detection, and even as a small power output tube in low-power sets. Manufactured by Cunningham, a division of RCA, this tube represents a significant piece of electronic history. It is highly sought after by collectors, restorers of vintage radios, and enthusiasts building replica early radio circuits. It comes in its original box, which may show signs of age and wear consistent with vintage packaging. Single Tube: You will receive one individual CUNNINGHAM CX301-A vacuum tube. Used Condition: This tube is pre-owned and in functional used condition. Inspected & Tested: Verified by our company to ensure basic functionality. Early Power Amplifier / General Purpose Triode: A versatile tube from the pioneering era of electronics. Original Box: Supplied in its authentic original factory packaging. Vintage Radio Component: An essential piece for collectors or restorers of antique radio receivers. This tube is Used and has been thoroughly tested by our company to ensure basic operational parameters. It will be securely packed in its original box for safe transit. International Buyers – Please Note? Thank you for visiting our page!