Out-of-Stock THERMOIONIC VALVES VT-25 RCA RADIOTRON 10Y VT25 10 CV603 410A 3C25 VALVE COUPLE TRIODE POWER OUTPUT AUDIO... NVT25RCAW €499.90 RARE & EXCELLENT PAIR of Triode VT-25 = 10 RCA Radiotron tubes, single plate, perfect for AUDIO amplification, power amps and 211 VT-4 Drivers. 100% PERFECT! View