It takes 6 tubes, 2 each for the preamp stage, the mm phono stage and the mc phono stage. It will take 12ax7's. New old stock Telefunken 12ax7's seem to be popular however when I had mine I enjoyed new old stock Mullards. You do not have to replace all 6 tubes, your phono needs will dictate whether you need to place any good tubes in your phono stages.
Have fun but take your time when removing the cover and the subsequent removal of the tubes. There is a silly and poorly thought out tube "holder" that will require you to remove screws on the left and right of the the tube section so the top tube guide can be removed. Use both hands so you dont drop the screws into the preamp. Dont ask me how I know this can happen.
Have fun but take your time when removing the cover and the subsequent removal of the tubes. There is a silly and poorly thought out tube "holder" that will require you to remove screws on the left and right of the the tube section so the top tube guide can be removed. Use both hands so you dont drop the screws into the preamp. Dont ask me how I know this can happen.