I bet everyone on here has a different method. I employ a Peterson Strobe for reference when tuning. Myself, I tune a six string using my fingers, but always use a pick when i tune a bass instrument. The only time for some reason i cannot use a tuner is in drop tunings. When i drop my 6th string to D, or double drop D tunings, if i do it by ear it always sounds right. If i use the tuner and get them perefect, it never sounds right to me, and i end up doing it manually by ear, and it always sounds dead nuts. The Hofner bass can be tuned good just by ear listening on the body being hollow. Pretty accurate too. But tunes up nicely to the Peterson as well. How do you guys tune up tour rigs ?