I found out that some VST instruments and real ones such as : piano,guitar do not match within the true 440 tuning frequency of a reference." A4" note.
I can tune my guitar below 440 Hz and I can also tune the VST instruments in my DAW.
Question : Do I need to make sure that all of my instruments match 440 Hz true "A4" tuning ? Or is guitar sometimes little bit below 440 ?
I found to be matching with other people at about 437 Hz.
Please let me know what you think.
Thanks,
Slav