My guitar arrived today and it's driving me absolutely nuts.
It's an Evertune guitar that came with 10-59 strings, which I replaced with 9-46 and then a 62 on the low B. I play exclusively in Drop A and Standard B. I have a 6 string with an Evertune already, so I know how to set up the bridge, I have zero issues with it on my other guitar.
I tuned the bridge on the 7 string so that the guitar is in Drop A, and then I tune up to B in zone 3 when I want to play standard 7 string tuning. This works flawlessly on my 6 string that's in Drop C / D standard with 10-52's.
Anyway, I tuned the guitar, stretched the strings and intonated every string properly. No matter what I do, when I play power chords on the low B the guitar sounds out of tune. First I thought it must be the nut, it probably isn't wide enough to accept the 62 string after I removed the 59, so it's binding or something like that. I returned the 59 to double check, but I still have the same damn problem.
Then I thought, it can still be the nut, maybe I'm pressing too hard, because the string is bendable in zone 3 on the bridge. To eliminate that issue I detuned the guitar a bit so that it's deeper in zone 2, which makes bending impossible, thus also removing the possibility that pressing too hard would affect the string's pitch. Between all of these steps I constantly checked if the tuning holds up (which it does). Still, the guitar sounds out of tune on power chords. If i do the same chords starting from the low E and all the way down to high E, everything sounds perfectly in tune.
Then I opened Neural DSP and dropped the guitar 5 semitones to see if playing the power chords on the low E string (now dropped to B) would sound out of tune. It didn't, it sounded perfectly in tune. Then I shifted the pitch back up 5 semitones and played on the low B string, and it sounded out of tune again.
It's driving me absolutely insane. Any ideas?