Nextar MA230 - Manual (Page 18)

Press the Mode button to confirm.
equalizer (Music only)
Use the Forward/Rewind button to select
the menu item Equalizer.
Press the Mode button to confirm.
Use the Forward/Rewind button to select
one of the following menu items:
tempo rate
Use the Forward/Rewind buttons to select
menu item Tempo rate.
Press the Mode button to confirm.
Use the Forward/Rewind buttons to set the
tempo rate you need.+ faster / - slower
A-B-replay
Selective playback of a part of a track.
Use the Forward/Rewind buttons to select
menu item A-B Replay.
Press the Forward button to mark the
beginning A- of the section. A- blinks on the
display.