This video accompanies the Pro Review of the Eventide Anthology X plug-in suite, which is currently running on harmonycentral.com. For background information on the video, please see the review itself at http://tinyurl.com/nm3mt8e in the Pro Reviews section of Harmony Central's Signature forums.
The first example shows how you can overdrive the output transformer emulation to good advantage, as illustrated by using the UltraChannel with bass. The first half shows how the bass is overloading the output, and the resulting distortion. The second half shows what happens when you enable the "output transformer" - it absorbs the transients and gives more of a soft saturation than clipping, but also, the bass acquires a bit more "body" and depth.
The second example plays the bass without any processing, then with compression (note the spectrum analyzer toward the left to see the results of the various processors). I tried to choose a compressor setting somewhere between too subtle to really hear the difference, and hitting you over the head with it - we'll have an opportunity for the latter with the Omnipressor. Finally, you'll hear EQ placed before the compressor so it can "push" high and low frequencies to accent pick noise and bottom respectively, and then back to bypassed for a final comparison.