I have an AA Q-Tec silencer, a standard AA silencer and a Weihrauch silencer on three different rifles and the Q-Tec is the quietest by far.

In fact the Q-Tec is the quietest silencer I've used in over 40 years of air gunning.

The Weihrauch is next quietest and I agree with Trumpetier's assessment of the standard AA silencer!