Greetings all! a newbee here
I have an econo phono/valve amp that I picked up years ago second-hand and have no clue where it was purchased or manufactured. It appears to have Chinese writing on it and it also does have "GUANGHENG TM300 - TM400AB" on the transformer cover. The transformer is fried and I'm not sure if it's worth repairing but I would do so if I can find one and it's a reasonable cost. Here's a couple of pics and thanks for your time.