Thank you for viewing. I am selling this because I no longer use it. This is a set of the YAMAHA trombone practice pickup mute (PM5) and personal studio (ST7). [Set Contents] ・Silent Brass Pickup Mute PM5 ・Silent Brass Personal Studio ST7 ・PM5 - ST7 connection cable ・Power adapter [Condition] ・Power on and operation confirmed ・There may be some scratchiness, but please understand that I am not familiar with sound quality. ・There are small scratches as shown in the pictures. ※Please purchase only if you understand that this is a used item. Please refrain from purchasing if you are sensitive to this. ※I am sorry, but returns are not accepted. Please take a close look at the photos before purchasing. Thank you. #YAMAHA #Trombone #Mute