211 RF Parts Power Triode Tube. Designed to be used in class A, B, C amplifiers. 211 can replace a GL-211 and UV-211. Has a 10v heater, 1250 plate voltage with 100W
Melody AN211 Integrated Tube Amplifier Review
File:RCA 211 tube.jpg - Wikimedia Commons
211 Single-ended GOLD Anniversary - Thivanlabs
6moons audio reviews: Ancient Audio Single Six
211 Single-ended GOLD Anniversary - Thivanlabs
GD-PARTS Brand New TJ Fullmusic Premium 211/CNE Tubo A Vuoto Sostituire 211 VT4C 242 Per Il Vintage Amplificatore HIFI FAI DA TE abbinato 1 coppia - AliExpress