Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Silent Brass not compatible with Smart Music
Review: Silent Brass is a very quiet mute. There is back pressure, no doubt about that. But since it is for practice, when you take the mute off, the horn blows easier, so there is some additional training benefit, if you see it that way.I don't use the electronics, because I can hear the sound without it without a problem. If Yamaha would make the mute perform multiple duty as a tuner and compatible with Smart Music, it would be a much better buy. In todays electronic age, this isn't a technical challenge, but maybe a marketing one on Yamaha's part.
