Ayon has by far the best tube management out there
it has a microprocessor that monitors each tube and regulates each tube for premium MA current , when a tube does fail the unit goes into stand by ,and a led lights up telling you which tube is at fault,instead of possibly taking out a transformer , just replace the bad tube ,push buttons to recalibrate bias and you are done ,Far more accurate then auto bias which I uses extra resistors and just averages all tubes ,a waste of potential ,or energy, and chokes and transformers are world class Lundahl transformers ,look them up top quality not
who knows where mostly China like prima luna or worse.
tell Keven it’s a known Fact C core transformers are used in the worlds best tube amps,not torroid transformers !!