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| Rocktron Pulse Tremolo $79.99 | |
You haven’t seen anything yet quite like the Rocktron Pulse
Tremolo. Where the effect is created using modulated and
static light! The classic “tube tremolo” sound in a small box.
While typical tremolo devices are created electrically using
VCAs, the Pulse is created with light, using light for creating
signal modulation via a photo-resistor – an LED lights up and
the photo-resistor changes the output volume on the Pulse in
relationship to the light intensity. An LFO (low frequency
oscillator) pulses the LED at a given rate and a given wave
form. The light travels to the photo-resistor causing it to change
resistance value, which in turn changes the gain output of the
internal amplifier (op amp). If all this sounds very technical,
what you really need to know is that the result is a smooth non-
symmetrical tremolo which closely approximates classic tube
tremolo properties.
A Speed control varies the rate of the tremolo, while an
Intensity control determines the amount of the effect. A switch
is provided that lets you choose triangle or square LFO pulse
modulation waveforms. A large blue LED shows the speed of
the tremolo.Tremolo pedals usually sound better when placed
after distortion in the signal chain. However, the Pulse can be
used either before or after the distortion. When you put the
Pulse before your distortion you will get a very cool tremolo
effect where at first you will not hear the tremolo effect until the
chord or note starts to decay or sustain…at this point you will
start to hear the effect.
When the Pulse is placed after the distortion, you will hear the
tremolo effect when activated. If using multiple pedals such as
delays and other modulation effects, try the Pulse Tremolo in
different parts of the signal chain until you find the sound you
like best.Like most Rocktron stomp boxes, the Pulse Tremolo
features an easy-access battery compartment that makes
changing batteries during a gig a breeze and a heavy duty chassis.
Tremolo. Where the effect is created using modulated and
static light! The classic “tube tremolo” sound in a small box.
While typical tremolo devices are created electrically using
VCAs, the Pulse is created with light, using light for creating
signal modulation via a photo-resistor – an LED lights up and
the photo-resistor changes the output volume on the Pulse in
relationship to the light intensity. An LFO (low frequency
oscillator) pulses the LED at a given rate and a given wave
form. The light travels to the photo-resistor causing it to change
resistance value, which in turn changes the gain output of the
internal amplifier (op amp). If all this sounds very technical,
what you really need to know is that the result is a smooth non-
symmetrical tremolo which closely approximates classic tube
tremolo properties.
A Speed control varies the rate of the tremolo, while an
Intensity control determines the amount of the effect. A switch
is provided that lets you choose triangle or square LFO pulse
modulation waveforms. A large blue LED shows the speed of
the tremolo.Tremolo pedals usually sound better when placed
after distortion in the signal chain. However, the Pulse can be
used either before or after the distortion. When you put the
Pulse before your distortion you will get a very cool tremolo
effect where at first you will not hear the tremolo effect until the
chord or note starts to decay or sustain…at this point you will
start to hear the effect.
When the Pulse is placed after the distortion, you will hear the
tremolo effect when activated. If using multiple pedals such as
delays and other modulation effects, try the Pulse Tremolo in
different parts of the signal chain until you find the sound you
like best.Like most Rocktron stomp boxes, the Pulse Tremolo
features an easy-access battery compartment that makes
changing batteries during a gig a breeze and a heavy duty chassis.