Yeah, the tube is there. Not sure if it's used always, or only for the distortion section. See pic.
On headphones it's really good though. 
Yeah, the tube is there. Not sure if it's used always, or only for the distortion section. See pic.
On headphones it's really good though. 
Huh. I really can’t imagine why it wouldn’t sound good direct. Are you using balanced TRS cables (as opposed to TS / instrument cables)?