One of the first popular musicians to employ the octave effect was Jimi Hendrix, who also used a variety of other effects in his recordings and public performances.

Similar to (but more versatile than) the Whammy IV, the POG lets the user mix in several octave effects into one along with the dry signal.

Octave effect boxes are a type of special effects unit which mix the input signal with a synthesised signal whose musical tone is an octave lower or higher than the original.

Warwick Electronics manufactured the first wah-wah pedal, The Clyde McCoy, in 1967 and that same year Roger Mayer issued the first octave effect, the Octavia.

Here he starts to use the Varitone amplified saxophone, albeit very discreetly, as he sticks mostly to the doubled octave effects for a suave tone that allows for some slippery swinging".

These included the Green Ringer, an octave effect, the Yellow Humper, a frequency booster designed for bass guitar, the Purple Peaker, a similar boost effect for electric guitar, and the Orange Squeezer, a signal compressor.

In addition to the standard Les Paul electronics (individual pickup volume and tone controls, plus three-way selector switch), the Schon Signature features two mini-toggles - an on/off for the Sustainer and an octave effect - along with a push/pull pot for midrange cut.