need help on dynakit st 35

Thanks for your suggestions. I brought back the amplifier to the store where I got it and they agreed to fix it. The problem was that they put the wrong tubes in the amp which was a 12ax7 (i think) instead of the 12dw7 or the equivalent. There was also a cold solder joint. They replaced all the tubes and it is now working perfectly so far since I got it back this afternoon. There was no smoke but I thought at first there was a funny smell of something burning or heating up.

The amp sounded pretty good and I even did not expect the bass to be that well because of some reviews that I've read. I was just using the speakers of a sony micro system.

I'm just wondering whether the amp really gets this hot, that is, the cage especially the area above the tubes get a bit too hot to touch after 10 to 15 minutes of playing.

Do the tubes still get bright red. If so you likley have one or more bad coupling caps. they are usualy black(black cat) and right on the circuit board.

This amp ran extremely hot "when new" and I assume that this is normal now that it is old. If you want still hotter then find an Eico HF81 in good condition. This is not saying that there is nothing wrong with the amp, just that they did run hot when in new and stock form.