I experienced the same "glitchy" noises on individual notes with earlier firmware v 1.038. Seems corrected by firmware update. I have the GT40 without pedals or Exp and it now sounds great for my home practice application. Can't even imagine how devastating it would be to bring an unreliable or "glitchy" GT 100 or GT 200 amp to a gig. Wonder whether Fender CEO knows how poorly his new GT100 and GT200 are performing for working musicians including respected Shane at "In The Blues". Great companies "pull" problematic products back from the market and provide their loyal customers with apologies and a well defined better path forward. They treat early adopters with extra care and incentives for putting up with early problematic product releases. Hope someone at Fender is monitoring this board and has sufficient influence to redirect Fender before this product release becomes a marketing and sales catastrophe for them.