SPT (Spiral Turbulence): Phase / vibe tones in a small pedal format. Select between one or four different frequency peaks ( voicing switch) for classic phase sound or swirling rotary-type effect. Expression pedal / tap tempo input.
- (2015-01-18) New at NAMM 2015 : Crazy Tube Circuits SPT by Crazy Tube Circuits
- (2015-02-11) NAMM '15 - Crazy Tube Circuits Splash MKIII, SPT, & Magnifier Demos by Premier Guitar
- (2016-03-28) Crazy Tube Circuits SPT Phaser/Vibe - DEMO by vhtargino
- (2016-08-02) Guitar God @gusgofficial playing with his SPT phaser !!! #gusg #crazytubecircuits #spt #phaser #officialjacksonguitars #blackstaramps #insanetone #Repost @gusgofficial with @repostapp ??? Playing around with the @crazytubecircuits phaser & my @officialj by Crazy Tube Circuits
- (2017-07-20) Crazy Tube Circuits SPT - Demo by Alberto Barrero by Alberto Barrero