Finnish to English Tech/Engineering Mechanics / Mech Engineering

From a feedback questionnaire about the products of a valve company:

"
Säätöventtiilit [ovat] laadukkaita ja Q-trimmi säästää korvia
"

(There doesn't seem to be any surrounding context – this is just a one-sentence comment.)

What does "säästää korvia" mean?

I have some thoughts, but I'll keep them to myself until I get some bites on this question. :)

Kiitos