Ken-Rad, an offshoot of Kentucky Electrical Lamp Corporation, manufactured vacuum tubes for radios starting in 1922. The tube division of the company was sold to GE in 1987 and continued producing tubes for the company until it closed. If you want vintage vibes from NOS tubes, Ken-Rad offers the mojo of '40s, '50s, and '60s vacuum tubes. Check out the vintage tube offerings from Ken-Rad on Reverb now.