 In the early systems, there was a detectable latency, especially at lower pitches, between playing a note on the guitar and the note's sounding on the synthesizer, but this was remedied in 2000s-era instruments.While this type is also somewhat prone to note-tracking glitches, the problem can be overcome by adjusting the sensitivity controls of the pickup or converter — and by playing more precisely.Another possible disadvantage is that not all of the variable performance parameters available on a synthesizer can be actuated from a guitar; a synth guitar lacks assignable controls to open a filter in real-time, for example.