EarthQuaker Devices Hummingbird User manual

OPERATION MANUAL
©2018 EarthQuaker Devices LLC
www.earthquakerdevices.com
<<< Power Requirements >>>
<<< Tech Specs >>>
• Current Draw: 10mA
• This device take a standard 9 volt DC power supply with a 2.1mm negative center barrel. We
always recommend pedal-specic, transformer-isolated wall-wart power supplies or multiple
isolated-output supplies. Pedals will make extra noise if there is ripple or unclean power.
Switching-type power supplies, daisy chains and non-pedal specic power supplies do not lter
dirty power as well and let through unwanted noise. DO NOT RUN AT HIGHER VOLTAGES!
• Input Impedance: 50K Ohm • Output Impedance: <10K Ohm
<<< Warranty >>>
This device has a limited lifetime warranty. If it breaks, we will x it. Should you encounter any
issues, please email [e-mail].
<<< Flexi-Switching >>>
This device features Flexi-Switch™ Technology! This relay-based, true bypass switching style
allows you to simultaneously use momentary and latching-style switching.
• For standard latching operation, tap the footswitch once to activate the effect and then tap
again to bypass.
• For momentary operation, hold the footswitch down for as long as you’d like to use the effect.
Once you release the switch, the effect will be bypassed.
Since the switching is relay-based, it requires power to pass signal.

<<< Controls >>>
Depth: This adjusts how much the
oscillator affects the signal. All the way
clockwise produces a full chop, all the
way counterclockwise produces no chop
and the Hummingbird can be used as a
simple JFET booster.
Mode: Three way toggle switch which
selects the range of the oscillator. Mode 1
is slow, Mode 2 is mid tempo and Mode 3
is fast.
Rate: This adjusts the speed of the
oscillator. Faster clockwise, slower
counterclockwise.
Level: Adjusts the output volume
Expression Jack: Use an expression
pedal to adjust the rate with your foot!
When an expression pedal is in use the
Rate control is defeated. We recommend
the Moog EP-2 expression pedal.
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Welcome to your new Hummingbird™ Repeat Percussion tremolo! The Hummingbird is a choppy,
sawtooth tremolo modeled on the vintage “repeat percussion” unit and similar to those found
in old Valco and Vox ampliers. It is capable of producing everything from classic “50’s style”
shimmering tremolo to a synthy, delay-like chop that turns your signal into a burst of short pings
and on through to near ring modulation speeds. Simply choosing between Modes 1 (slow),
2 (mid-tempo) or 3 (fast) and adjusting the Rate (3) and Depth (1) controls will unlock a whole
new world of amplitude modulation at your feet. The Rate is also expression pedal accessible
to allow instant changes on the y. Using an expression pedal opens up the possibility of true
random amplitude modulation! In addition to the modulation, the Hummingbird has plenty of
clean gain on-tap allowing you to either boost or cut the signal using the Level (4) control. If the
Depth is turned to zero, the Hummingbird will become a JFET clean boost! The Hummingbird is
all analog, true bypass and handmade one at a time on a gilded cloud in Akron, Ohio.
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<<< Suggested Settings >>>
Interstellar Sequence
Sun Reections
Try a Gmaj9 open chord in time with the warm
sunlight tempo of the modulations.
Power Chord Companion
Hit your amp a little harder while coming
down to each chord with right hand windmill-
like motions.
Tremors
Use expression pedal to create bone-chilling
modulations.