Boss GT-3 Promo (Roland 1999)
5:32
BOSS GT8 The Basics
15:50
BOSS GM-800 Guitar Synth: One Step to Infinite Sonic Potential
7:35
Boss GT-3 multi effects processor: Retrospective DAW recorded demo
10:12
convierte tu Viejo equipo en uno moderno solo con esto
6:13
BOSS GT-3 Part 1
21:50
Boss Gt3 sounds
12:22
BOSS ME-90 | Dial in 5 tones in 5 minutes challenge | Better Music
6:08