I inferred "eliminate cumbersome trims" to mean there wouldn't be any.
One of the descriptions for the cantar was as follows:
from http://test.aaton.com/products/sound/cantar/
Unsurpassed mic preamps
The fame of the Cantar Sound is based on Aatons expertise with audio signal processing. First, the five mic inputs are equipped with the highest quality impedance transformers.
Second, Aaton developed huge dynamic range three stage proprietary preamplifiers to eliminate cumbersome trims.
Third, the powerful and smooth analog limiters achieve an impossible task: they are almost transparent to background sounds.