I realize I was not clear in what I was going to do. I wanted access to a 388 to digitize my Q8s using Pro Tools, Auria and my iPad Pro. You are absolutely correct if I was planning to use the 388 to just playback the Q8 for 'my listening pleasure'. Thanks for your response!It would if you plan to play the tape on a different machine. For example, if you record tracks on a tape to play on another 8-track, they won't line up.
They will line up of you record it to put in an 8-track cartridge. The 8-track and the Q8 both play all odd tracks or all even tracks at once. If the head gaps are staggered, all of the even tracks line up and all of the odd gaps line up.
Note that changing the speed also changes the equalization. The reproduction curve on the machine won't match the record and repro curves for the tape. The turnover points in the curves will be an octave off.