Hello, I have a C+ with SimulClass that will be delievered to me tommorrow. The owner stated that it comes with 4 6L6 tubes, but I was under the assumption that I needed to have 2 6L6's and 2 EL-34's to run the amp in Simulclass...Can I run the amp in simulclass with 4 6L6 tubes with out any negative consequences? I recognize that this is probably a dumb question, but I'd rather be safe than sorry.