Hey go George, your getting there. Hey if you want a proper rack tuner go the Peterson strobe rack tuner (a bit expensive though ($550 ish ? IIRC), I use the Peterson strobo clip (here's the rack model for $400 US (https://www.petersontuners.com/index.cfm?category=135&action=itemView&itemID=6)).
IMHO, Loose the digital tuner (best thing you'll ever do
, apart from the noise...), tune in real time with a strobe tuner, no dead zone, instant response, accurate to 1/10th cent try one you won't go back, particularly with the sweetend tunings. The strobo clip is quite a bit cheaper (~$80) buy one from Melbourne (http://www.deluxeguitars.com.au/peterson-stroboclip.asp), great tuner, and clips on to my acoustics as well. I've used Korgs all my career and they have worked well, unfortunately no digital tuners (Roland IMHO is the worst) are very accurate (dead zones, i.e. if the sampled frequency is between x and y (the dead zone) glow green in tune lite...). So not only are they slow to respond (sample the note, compare to dead zone), they say they are in tune within a wider tolerance range.
Cheers R