Quick question I can't find the answer to in my new LSC manual. Which set of tubes is the 50 watt set of power tubes? The two inside tubes or the two outside tubes? I'm trying a set of really good old 6L6 GE tubes that I know work very well and I'm wanting to A/B them, but need to know which set is running in 50 watt mode and which set in 100 watt mode (I know all four are working in 100 watt, but which two are not in 50 watt essentially).