When you see the price attached to the SCM268 microphone mixer, you'd never guess that there are six transformers inside: four transformer balanced XLR microphone-level inputs, one transformer balanced XLR mic/line output, and one internal low stray field, toroidal power transformer. Nor would you expect that the six transformers are just the start of what makes the SCM268 such a great value. But, then again, it's a Shure. So you've come to expect this kind of commitment to affordable quality.