- Manufacturer: YAMAHA - Model: Silent Brass SB5X / Personal Studio STX-2 - Compatible Instrument: Trombone - Accessories and Condition: As shown in the attached photos (mute, personal studio, instruction manual, connection cable, earphones) Retail Price: ¥27,500 Purchased several years ago and used a few times (less than 5 times), but I am selling it because I no longer play the instrument. It is a beautiful item with little signs of use. I don't remember using the included earphones because I used different headphones. Since it is almost unused, I cannot offer a discount. Please purchase only if you understand that this is a used item. ☆ I will include a small trombone care kit. #Yamaha #YAMAHA #trombone #Trombone #BrassBand #Orchestra #MusicalInstrument #SchoolBand #Mute