I just found running it through a tube amp sounds better than a solid state (and I’m not one to really picky between the two in general). I also like to run an EQ pedal after it to fine tune the tone. I also found turning the dry (guitar) sound up a little when using the string related instruments adds a bit of a natural feel to it too. When I first started using the 9 series pedals I never had the dry tone turned up but I have been using it with the mel-9 and find it helpful.