I have been using this mute for over a month now. Playing the trumpet in a city house has its limits, your parents patience and the neighbors complaints. I bought this as i wanted to play as often as i could, and also, to play past midnight.
Many people have done reviews on these and you can find them online in both video and writing format.
From a beginners perspective, this mute is awesome (especially if what you are looking for is volume reduction). The sound timbre and pitch of the notes are not affected by the resistance created by the mute. The resistance to volume reduction ratio is superb and this is probably a best buy for someone who is looking for volume reduction as a primary criteria.
The Sssshmute is both light and sturdy which makes it easy to use and carry around.
Go and get one for yourselves and enjoy. (p.s. i found that it significantly improved my range, i got better results in a week that 3 weeks practicing without without it (simply because it allows you to expand on how much you can play in a day.
This mute is crazy at reducing your overall decibels
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