Hello, I have a Marshal Jubilee 2525h and I like to know what tube do you think would be best for the inverter phases and the preamp section to have the headroom as clean as possible and improved my amps as pedal platforms. Thanks for your time is really appreciate I know is not the best amp for use like a pedal platforms but if I have the money I would not ask you the question I would buy an other amp loll thanks again!