Finally just got my recording set-up together, and want to use a volume pedal to make swells. I'm currently trying to focus on using amp sims and effects, so I'm just DI'ing straight into my interface (focusrite 2i2). Once I add the volume pedal (an Ernie Ball VP JR) to the chain, I'm getting a noticable hum/buzz (not crazy loud, but does appear on recordings). Has anyone had a similar problem? And if so, how did you fix it?