Vintage-Flavored All-Analog Tremolo Pedal with 3-Knob Design and Seamless Morphing Between LFO Styles. Choka Tremolo's intuitive 3-knob layout lets you easily crank out fast waves that either cut deep or leave shallow furrows across your tone, or slow tides that ebb and flow with just the right amount of white-capped tubes you need for a satisfactory surf tone. Choka features a knob that lets you seamlessly fine tune the waveform of the LFO to your specific sound. You can either go totally triangle mode for the classic California tube amp tone or full-on square mode for dramatic chopping riffs. Of course, you can choose to be the bigger man and compromise - find the exact place between the waves where your sound lies. With all-analog circuitry in its heart, Choka Tremolo is as warm and organic sounding as a beach in Southern California. The surfy sounds of the sixties are easily within reach but Choka is equally at home in more modern settings with plenty of hard chop on tap and with its versatile controls over Speed and Depth and low noise operation, Choka covers everything from surf to Motown to nu-metal and beyond. Built from metal and solid enough to stand up to a tidal wave, Choka is a reliable dude. The inner workings are also made from high quality materials, with an all analog circuit and true bypass technology that won't wipe out your tone when Choka is off.