So I talked to the tech support at Bogner about biasing the Helios but they werent quite clear. I put the Helios in 30watt JTM mode and cranked up the master volume and noticed one of the two tubes redplating. I opened the amp to check the BIAS and see if it was too hot. It was ok. Anyway. Purchased some fresh tubes since the amp had them in there for over a year. When asking the tech at Bogner I told him that the readings for BIAS in current draw were the same in 100 watt mode and low power mode. How is that possible?? The 100 watt mode is around 500v on the plates. so 70% max current draw should be about 35ma. I followed their advice ( and what i have heard from others ) to BIAS at around 60%. Doesnt make a real difference anyway. but it low power mode that is putting the tubes to run significantly colder as the current should be around 42ma. But when I put the amp in 30watt mode i am still getting the same 32ma readings. Has anyone talked to Bogner about this when rebiasing? Am I missing something here? Does the current draw in 30watt mode not show up the same? Just making assumptions here as im not that technically inclined to find more answers. thanks for any feedback!