Howdie, My name is Gait and I repair amps. Done this for about 20 years and because it's not my dayjob it is still fun. And I noticed something. I've seen many Twins and Deluxes that are about 50 years old and still going strong. And I've also seen many amps with printed circuit boards that won make ten years. But pcb' s are only part of the problem. It is also the use of the cheapest components (resistors, capacitors, electrolytes) the manufacturer can get away with. As long as there are just a few casualties within the year of warranty everything is cool, they think. But it's not. Deliberately using components that are on the brink of collapsing even when new. It is an insult to us, buyers and users that buy amps and stuff in good faith. And it's not just Fender or Marshall/ If you see an amp that says " designed in U.S.A." you bet it's built in China with the cheapest of the cheap components availabe. I've also met the complete line of amps from Supro. None of them without faults. Wrong pcb-design which resulted in bad hum. Several destroyed themselves due to bad transformers. Others sounded really bad out of the box. Only one out of 14 sounded so heavenly good that I bought it myself. Anyways, rant over. I can sleep well now. Thanks for reading. Greetz, Gait.