Hi there, I am using my new ES-339 with a Zoom R8. This is a multitrack recorder, multi effect and audio interface. It has two inputs for balanced/unabalanced cables, one of them has an High Z switch to plug in directly electric guitars and similar, which is what I am using. Is there any advantage using a DI box between the guitar and the input instead? I see that some DI boxes are passive, while other are active and some have amp simulation as well. For instance the Behringer-GI100-Ultra-G-DI-Box on Amazon (cannot post a link). To be clear, I am not trying to fix any specific problem, the signal sounds nice to me and reasonably noise free. I am just wondering whether it would sound better with a DI box, given I have little experience with electric guitars. Also, I have a Micro BR recorder with a few patches I enjoy, so I might occasionally record the ouput to the R8, and a Casio digital piano with a stereo unbalanced output which sounds absolutely dreadful when connected to the R8 (lots of noise and very poor and muddy sound, even setting the gain so to avoid any peak). So I was also wondering if a DI box could help with those two.