I have a few questions about both Elk amplifiers as well as tube pulling, so i thought i might as well ask in a single thread.

Now i have been lucky enough to stumble across an Elk twin amp 60 and i am wondering if anyone can tell me anything about these amps. I understand that they are fairly rare, the company went defunct in the 80's or sumthing. i would like to know what kind of tubes this thing uses as some of the ones that are in there are not marked.

Also with regards to pulling power tubes, will it do any damage to my amp if it normally runs on two power tubes and i pull one out, or will it just make the remaining tube work harder?