www.tunnelvisionmusic.com - Basically, the ooh-wah is sort of a combination of a tremolo and a wah wah pedal. If youre familiar with seventies synths, its exactly like an analog sequencer/random sample-and-hold controlling a mellow bandpass filter. You have a choice between 4, 6, or 8 steps/channels for your wah. The 6 step positions works well with 6/8 or 3/4 time songs when in seek-mode, and you can control the total number of possible channels of wah with that switch in random mode ...