handmade analogue guitar effects

Pinkie QT -dynamic tremolo

Available in both an engraved and painted standard enclosure and a handbuilt engraved stainless steel and mahogany enclosure

Pinkie QT is a vactrol based dynamic tremolo effect, handmade in the UK using discrete analogue circuitry. An envelope follower and Q filter is built into its anatomy which can be blended in for a more exotic tremolo or used independently for a wah-like effect. The filter can also be controlled by the tremolo's low frequency oscillator (LFO) for a Q based tonal sweep. There is also an option to control the LFO rate with your playing dynamics using the envelope follower. Finally, a generous amount of pre filter gain can be added to your sound with an additional 24db of boost available on the output to push your amplifier if required.


This controls the output level of the effect and helps to compensate for the perceived volume loss when a deep tremolo effect is used. This can also be used to provide a clean boost to your signal to either overdrive your amplifier or provide a volume change when the effect is engaged.


This adds overdrive to your sound. The gain is applied before the filter, giving more characterto the modulation when a more distorted sound is needed.


This controls the depth of the tremolo effect. When the amplitude based tremolo is being used, the modulation can almost entirely be removed from the output sound by turning the depth control fully counter clockwise. This allows other features of the effect to be used independently. When the filter based tremolo is being used, the depth control adjusts how far the LFO is able to sweep the filter from bass through to treble. On lower settings the filter will only sweep the bass frequencies, on higher settings increasingly more treble will be included in the modulation.


This controls the speed or rate of the low frequency oscillator (LFO) that generates the tremolo effect. The rate of the LFO can also be controlled by the envelope follower. When this feature is used the rate control will set the slowest rate of the dynamic tremolo, so for the largest variation of rate, this control should be fully counter clockwise.


The envelope follower uses the dynamics of the input signal to control several of the of the effect parameters. The sensitivity control adjusts the amount of signal made available to the envelope follower. This is predominately used to match the output level of your instrument to the follower circuitry for maximum dynamics . It can also be used to add more subtle changes to your sound. By turning it fully clockwise, when the envelope is controlling the filter for example, the filter will not sweep unless the instrument is played very softly or louder notes are left to decay.


This manually sweeps the narrow band pass or Q filter. This can be used to set the Q of the filter for a cocked wah-like sound, great for a lead tone when a little (or a lot) of pre filter gain is added. When either the envelope or the LFO is controlling the filter, the Q control adjusts the bass frequency limit of the filter. For the most dynamic sweep, the Q should be fully counter clockwise. For a more traditional tremolo effect or an unfiltered drive or boosted sound the Q should be fully clockwise.


This switch allows the envelope follower to control either the filter in the up position, or the rate of the LFO in the down position. When the envelope is controlling the LFO rate, the filter is still present in the signal path. This is then manually adjusted by the Q control.


This switches between either an amplitude based tremolo (volume) in the up position, or Q filter tremolo (tone) in the down position. When filter based modulation is being used, the Q control still affects the filter and can limit the bass frequencies of the sweep. If both the LFO and the envelope follower are controlling the filter, the envelope is able to override the LFO's effect making it only audible as the instrument's sound decays or when quiet notes are played.