AF rating ONLY! This is standard equipment in my MTCA, Big G & Lil W amps
The Shugaung 807 is standard equipment in my base level 25-1-15 guitar amp. A pair gets mated up to a 15" speaker running as 25 watts. The amp has been slightly revoiced to give that classic Merle Travis & vintage Chet Atkins tone of the 1950s. The WM is a cleaner amp, and the "Lil W" is an 18 watt harp amp, with a dirt pushing pentode & triode first gain stages that blend to get a good blend. The latest is the "Big G" with 33 watts of power and the same gain stage blending. The premium 25-1-15 & "Lil W" use Genalex KT8s, JBLs & NOS valves all around. They also costs $2400-$2700 more. These give a warm clean tone that is not quite like a 6L6. Individual notes stay quite clean and defined. Chords will slightly cloud up a bit, just like the real Standard Electric amps would. The harp amps are just a raunchy. I have not tried these in RF applications yet. Eventually I may get around to it. So far, I have not tried ramming high plate voltages & currents through these either. We do run some moderately high current, but nothing crazy. They are not quite as throaty, and warm as the NOS 807s. We have adjusted the circuit to compensate for that, and they work quite well.