Can speaker cables damage amplifiers?

I don't know about Krell products, but Spectral recommends only MIT cables with their equipment to decrease the risk of oscillation.

What is oscillation?

I've never heard that or experienced any problem with 2 different sets of MIT speaker cables on Adcom 555 or my current Classe 200. And good question Bday0000.

E-mail response from Krell is that there are no problems using Transparent cables with their amps. Awaiting response from Tansparent, too. Incidentally, I still do not know what is meant by "oscillation".

Nelson Pass' 1980 article on speaker cables mentions oscillation among other things. Find it at http://www.passlabs.com/spkrcabl.htm Here is an except from page 3: "When a wave travelling down a length of cable reaches the end of the cable, it will do one of three things depending on the impedance of the load. If there is a high impedance load, so that ZL, > Zc, the load wil reflect energy positively back down the cable to reappear at the source Fig. 9). If the load impedance is less than the characteristic impedance of the cable, the wave is reflected back negatively; and if ZL = Zo, then the wave is fully absorbed and none is reflected." Good luck!