My Daughter is delighted with the product, I have the same system for my trumpet, which I am delighted with, and I wanted to get her a special present on completion of her PHD, she is enjoying playing again, without disturbing other residents in their flat.
4* for merchandise. The practice mute is works well. With the earphones (or cheap headphones) and the Silent Brass "studio" it sounds very tinny. Today I have borrowed some good headphones, and the tone is completely different - still not as 'real' as Yamaha suggest, but a much better timbre. Explains varied reviews. If you don't have any already you may need to spend another £250 on headphones to get this effect. Not sure if it is worth it.
More than happy with new mute. Much better than previous one.