User Guide
Reverse
• Reverse delay, normal reverb.
• Ratio is always in 1/1 position no matter where the ratio switch is set.
Pro Tip: The other ratios will still work for standard delay, if you set 
the ratio for anything other than 1/1 when you are in Reverse mode, 
you will get really cool rhythmic patterns when using the Tap switch or 
expression pedal to switch between reverse and “normal” modes.
• Hold down the Tap switch to temporarily send the delay back to forward 
mode and release the Tap switch to go back to Reverse. 
Pro Tip: Use the expression pedal in the “Toggle” position to go back 
and forth from reverse to standard. This allows you to still use the Tap 
switch to send the delay into self-oscillation. 
Swell
• Adds an auto swell to the entire signal path, much like slowly turning 
up the volume control on your guitar.
• Reverb Mix controls the length of the swell, swell length becomes 
longer as you turn the control clockwise. 
• Swells are triggered by the input, regardless of input strength. To get 
the most from this effect, adjust your playing to a more staccato style 
and mute the strings after every note or chord.
• This mode sums both left and right inputs on both the wet and dry 
paths to mono.
• Hold Tap switch down to send delay into innite repeats. On shorter 
Time settings, they will quickly go into oscillation and on longer Time 
settings, they will slowly build. 
Tails Mode
The Avalanche Run also has a “Tails” mode. Tails mode allows the wet 
signal to naturally fade out after the effect is switched off. It has 5 Tail 
length settings that are selected by the Ratio switch during power up.
How to engage Tails mode:
• Unplug the power cable
• Set the Ratio switch to the desired Tail length:
  • 1/4- True Bypass (See “Return to True Bypass” below)
  • 1/3- Short Tails
  • 1/2-  Medium Tails
  • 2/3- Long Tails
  • 3/4- User Dened- Tail length is determined by where 
   the repeat control is set. Tails can go into oscillation   
   by holding the Tap switch down or stopped by double 
   clicking the Tap switch. 
  • 1/1- “Sound on Sound”- Tail length goes into innite  
   repeats once the effect is switched off. Tails can be 
stopped by double clicking the Tap switch. 
• Once you have selected the Tail length, hold down the Activate 
switch and plug in the power. The Activate LED will light up Green 
after 2 seconds then release the Activate switch and you’ll be in your 
desired Tails mode.
• The signal is in buffered bypass mode when the LED is green.
• The ratio switch will go back to selecting your desired Ratio after this 
process is complete.
Return to True Bypass mode
• Unplug the power cable
• Set the Ratio switch to 1/4
• Hold Activate switch and plug in the power. The Activate LED will light 
up Red after 2 seconds and you’ll be back in True Bypass mode.
Jacks & Signal Path
The audio jacks are located on the north side of the pedal, along with 
the 9v 425ma power jack. 
• The Avalanche Run has a stereo analog dry path, a dual mono delay 
path and a stereo reverb.
• To run mono; use the left input and output only. 
• To run stereo; through use both left and right inputs and outputs. 
• To run mono in and stereo out; use the left input and both left and 
right outputs.
Cool Trick: Plugging into the right input and using the left and right 
outputs will give you an all-wet left channel and a standard mixed right 
channel while the effect is engaged. You can create dramatic stereo 
effects by keeping the Mix set low and turning up the amplier source 
connected to the left output. The left output will not pass dry signal 
when the effect is turned off in true bypass mode but trails mode it will 
still produce the effected signal as long as it is set to decay.
The expression jack is located on the west side of the pedal. It is a 
TRS jack with the tip acting as the wiper. 
• We recommend using a Moog expression pedal with the output 
adjustment knob all the way up. 
• We cannot guarantee any other expression pedal to work with the 
Avalanche Run.
Power Requirements
• 425mA current draw
• Please use the included 9V center negative 1 Amp DC power supply 
for best results
Tech Specs
• 24-bit 96kHz A/D & D/A converters
• 115dB Typical signal to noise
• Input impedance: 1M Ohm
• Output impedance: 100 Ohm
• All analog dry signal path
• All digital wet signal path with 20hz-20kHz Frequency response
• Selectable relay-based true bypass or buffered analog tails modes
• PCB’s populated by a combination of articial and human intelligence 
in the Akron, Ohio of America. 
• Each and every Avalanche Run is completely assembled, wired and 
tested by total human beans in the tiny tundra town of Akron, Ohio.
This device has a lifetime transferable warranty, if it breaks we will x it. Should 
you encounter any issues please send an email to info@earthquakerdevices.com.
© 2018 EarthQuaker Devices LLC. | www.earthquakerdevices.com | info
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