There are two modes. In Rate mode the tremolo speed varies continuously from one to 20 cycles per second. An LED pulses in time with the tremolo effect for easy Rate setting. In Ratio mode, tapping the Tap Rate switch establishes the speed, allowing for easy synchronization of the tremolo rate and song tempo. Also, in Ratio mode, the tapped tempo can be expressed in your choice of four tap-to-note ratios: 1:1, 2:1, 3:1, or 4:1 (1/4 notes, 1/8 notes, triplets, or 1/16 notes).
This super versatile trem is lightly used and ships safely and swiftly! Feel free to give us a call here at the shop if you have any questions about it!