(!!!!!) (Single) 12BH7 Super Radiotron Australia gray ribbed plates NOS 1960's (9.8/14.2ma) (similar sound to RCA) (McIntosh, VTL, Manley, Quicksilver)1 low noise tube) 12BH7 Super Radiotron Australia gray ribbed plates NOS 1960's 9. 8ma Gm=3000 14. 2ma Gm=3500 smooth, detailed and open AWV stands for Amalgamated Wireless Valve. It was a subsidiary of Amalgamated Wireless Australasia (AWA) and was involved in the manufacturing of vacuum tubes and later transistors. The company was formed in 1932. recommended for: Octave M90 mono amps (http: www. octave. de ) Quicksilver Audio V4 mono amp Quicksilver