Re: Problems with Boss PS-6 Harmonist
I don't think a different adapter/battery is going to give you tonal differences unless you've been using an improper adapter or the battery is dying. Are you finding this problem across the board or only on very "wet" settings? If it drastically impacts your tone on drier settings, it could be you have a bad one and you might want to consider replacing it. If it's only a problem on the wet side of things, you might want to run it drier or adjust EQ to compensate.
The nature of these pedals is that they do have a significant impact on the tone. Sometimes it sounds great and you like it, however, a lot people (especially those going after very organic tones) hate what it does to their tone and only use it, if they use it at all, in select settings. You'll have to decide. I have the PS-5 and I use it when I'm going for really out there stuff, because it does really change the tone, much more metallic, much harsher. I like it for what I use it for and I don't expect it to maintain my tone transparently since it will never do that.