Size tuner pedal True Bypass, superb screen Quartz mode instead of as small LED on the TC Electronic Polytune (that I have seen that I have two amps)
An external power supply output more not lose your power supply socket block
The PolyTune as the TC Electronic mode is not 100% accurate it is just to check quickly, I live not grant this mode I done the old, convenient option against j ' have a gap between the two tuners when I switch from one to the other, after which sounds more just there ... bah
Aside from the housing is plastic, it's still a great product