This is the YAMAHA SB5X Silent Brass for tenor and tenor-bass trombones. It's a set that combines the lightweight and compact pickup mute PM5X with the STX-2 personal studio, which features Brass Resonance Modeling for a pleasant sound. How about using it for practice at home? - Brand: YAMAHA - Model Name: SILENT Brass SB5X - Included items: Cable, box, instruction manual, warranty, other documents Thank you for looking.