TubeNet

I'm looking for a tuba practice mute and I've been thinking of getting the Wallace Mute. Does anyone have any thoughts on the mute?

http://www.wallacebrass.co.uk/tuba.htm" target="_blank" target="_blank

According to the page linked to, this type of mute raises the pitch one whole step. I don’t have perfect pitch. Still I might get confused, when playing open after using that mute.

Klaus