ITT's KTUs were not as durable or solid built as Western's.
Maybe so, but they are a heck of a lot easier to fix. I've had two cards go bad on me since I got into 1A2, one was a western, and one an ITT. The ITT card I changed two 1N4004 diodes and it was back in the KSU. The western card... still in the junk drawer. Can't figure out what went bad to save my life. It's been so long since I looked at it, I don't even remember what screwy thing it was doing.
Come to think of it, that bag of 1N4004 diodes has served me well. I bought them to fool around with building a ringing diode matrix and I gave up on that (it worked, just didn't need it), and I've fixed a line card, a guitar amp, an Avaya contact closure, and a bunch of other things with them.
