OKKO T3 Tremolo

From the manufacturer: 

The T3 is our most complex build so far. This great-sounding, versatile Tremolo pedal can do everything from vintage amp style modulation to weird polyrhythmic chops and offers some features you won't find in any other Tremolo pedal:

– main tremolo featuring two optocouplers for harmonic or regular tremolo effect
– waveforms (sine, triangle, square) with adjustable symmetry (ramp ups/downs possible)
– tempo controlled by the speed pot or tap tempo footswitch can be multiplied by 1,2 or 3
– another optical tremolo (T3) in series with the main one for a way more complex modulation
– T3 can be switched via an optional external footswitch
– fully analog and parallel signal path featuring rail-to-rail opamps run on 18V for increased headroom (pedal runs on regular 9V though)
– 5V clock input and output available on request for integration in synth setups
– each pedal is setup individually for optimum performance