BEST BRASS III EB3-TRB for trombone

■Muffling level: about -30dB ■Function: Digital echo, headphone volume ■Input terminal: AUX-IN (mini stereo jack), PHONE (mini stereo jack), LINE OUT (mini stereo jack) ■Accessories: stereo headphones, karaoke CD (with mini sheet music), connection cable (stereo mini jack/stereo mini jack) *2 AAA batteries (sold separately) required. (Alkaline batteries are recommended.) Total length: 157mm, width: φ85mm, weight: 90g