I bought a $14.00 tuner at the local Sam Ash store . They had a variety
of tuners in different colors and sizes .Some with lighted dots and
some with tones also .mine has an instrument plug-in(gtr,bass,etc.)and
a microphone !It is digital but has an analog meter that displays
frequency .
It is really useful in the studio !I usually place it right on the
music stand . it would be next to impossible to use during a
performance with more than one instrument though ! Never thought I
needed a tuner till I started using one ! It has helped my playing
quite a bit !