My bass player uses the TC Electronic bq500 bass head and a 4x10 bass cab but I can't remember what make the cab is. The tc electronic bq500 has been fine for every gig we've used it for but I don't think he'd want a lower wattage head as it's solid state and you really want a bass head to have higher wattage than a guitar amp to get the power from it amplifying lower frequencies. In comparison, my guitar amp is only 30W but all tube and going into a 2x12 cab fitted with celestion V30's and very very loud.