Posaune Practice Dämpfer
This practice mute reduces the volume by 25 dB, which is a lot. You can play at home or in a...
This practice mute reduces the volume by 25 dB, which is a lot. You can play at home or in a hotel at any hour of the day without disturbing anybody. In addition, you can use the mute to practise your fortissimo with an open throat. The mute is not too heavy and stays in place in the bell. All tones are playable and the intonation does not change. There is a scientific article about four practice mutes, including the Voigt (technically identical to the Wallace damper in the test): https://www.trombone.org/articles/view.php?id=166.
My practical experiences correspond to the conclusions of the test.
Dr. Kees van Hage, Amsterdam