I have all yamaha silent brass with ST9 sourdinne trobone for PM5.
PM5 is mute for trombone and bass tnor. Having a low tnor and I test on two planks and no problem. It fulfills its rle, we close the door and the neighbors hear anything.
For what is the sound, I find it too mtallique this bunch much of the grain of the instrument, but means much the accuracy of the instrument. This unit is supplied with headphones, plutt correct.
It's been six months and I have no particular worries. My neighbors are rather SATIF not to hear me. This requires a little practice because it is true that the sound with headphones is a bit spcial but if done quickly.
I find it much better than just sourdinne dumb because you can get along and even play with (there is a function reverb on the case). In terms of using it as pure micro to the scne or registration by the cons must be avoided is not for ca. It changes the sound too.
The price is lgrement lev (Envrionment 200). Anyway I would do the same choice.
I bought this mute, because I really liked that a friend lent me.
only he has the old version: bigger, with more external power supply battery and several choices of reverb, an entry for a second damper, an outlet to go to a console or recorder ... and sound ... much cleaner, more enjoyable.
I was disappointed with this product, obviously made to go to the economy. Mute, which contains the microphone is very sensitive to shocks, it is very noisy when you move a little. The sound is not convincing, for saturations and low level.
pity there is no competition, because I find that Yamaha is released. It is a product that is highly effective pure work without disturbing its neighbors.