what is hz on a guitar tuner?
Standard guitar tuning Hz Sound waves are made up of different frequencies, measured in Hertz (Hz). The standard tuning of a guitar consists of E2, A2, D3, G3, B3 & E4 from the lowest string to the top. Across music, the A above middle C, A4 (440 HZ), is used as a standard reference pitch for tuning instruments.