TS soldering irons are great. I've been giving them as gifts to techie friends, they're all now fans.<p>the YouTube personality Marco Reps suggested someone should try to tweak the firmware in order to be able to play music when he did a review on these irons long ago, i'm glad someone took up the task.<p>personally i'd just try to hack a JBC soldering cartridge together with a TS for a real-cheap 'ultimate' soldering iron.. bit then i'd be without tunes, I guess.