SKU: 32548837966

Alexander F-13 Flanger Pedal

Sale price$152.95 Regular price$169.95
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Ships within 48 hours · Estimated delivery Jul 17 - Jul 22

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Description

Alexander F-13 Flanger PedalAlien mojo meets military tech, circa 1958. The F. 13 is our take on space junk stolen from Area 51 and put into the service of rock 'n' roll. Equal parts science, art, weapon and instrument, the F. 13 generates interplanetary flange never heard in this galaxy or any other. Controls: Rate: Controls the rate of the low frequency oscillator (LFO) for the flanger, from glacial to space invaders. Controls the input sensitivity in Dynamic mode. Depth:

Alien mojo meets military tech, circa 1958.  The F.13 is our take on space junk stolen from Area 51 and put into the service of rock 'n' roll.  Equal parts science, art, weapon and instrument, the F.13 generates interplanetary flange never heard in this galaxy or any other.

 

Controls:

Rate:  Controls the rate of the low-frequency oscillator (LFO) for the flanger, from glacial to space invaders.  Controls the input sensitivity in Dynamic mode.

Depth:  Controls the maximum LFO sweep.  In Step mode, the depth control chooses downward steps, upward + downward steps, upward steps, or random steps.  In Dynamic mode, this controls whether the flanger sweeps down (less than noon) or up (greater than noon) based on the input signal.

Mix:  Controls the blend between the dry and flanged signal.  Equal mix is at 12 o'clock.

Hint:  Pitch vibrato is available with low Regen settings and fully wet mix.

Regen:  Adjusts the amount of flanged signal fed back into the modulation.  Zero feedback is at noon, clockwise increases the positive feedback for a standard flanger sound.  Twist this knob counter-clockwise for negative feedback and a unique "inside out" flange.

 

Mode Toggle:

Step:  The flanger LFO is forced to "step" to eight different values for transforming robot sounds.  Sweeps either up, up + down, down, or random.  The random mode is similar to a synthesizer "sample and hold" effect but with flange instead of filter.

Sweep:  Traditional flanging is found here.  The LFO for the F.13 is actually a "hypertriangular" waveform, so that the flanger spends more time in the interesting portions of the sweep.

Hint:  Set the Rate control at zero for "filter matrix" style manual flanging.  The Depth knob controls the flange position. 

Dynamic:  This one is kind of unusual, even for us!  The flanger delay time is set by the volume of the input signal.  The Rate knob adjusts the sensitivity, to allow for different pickups or effects before the F.13.  The Depth knob controls which direction the flanger will sweep when it hears the input signal.  Don't say we didn't warn you.

Specs

Type: Flanger
Power Supply: 9v DC 2.1mm Negative Center
True Bypass/Buffer: True Bypass
In's - Out's: 1 In - 1 Out
Stereo/Mono: Mono
Expression Out: None
Analog/Digital: Digital 24-bit DSP architecture
Battery Connection None
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 32548837966

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Twins9
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★★★★★ 5
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Size: Medium, Color: (002) Black / Black / Halo Gray
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Reviewed in the United States on January 16, 2026
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swwkennyg
Lowell, US
★★★★★ 5
Perfect sucks
Size: Medium, Color: (001) Black / Black / Castlerock
Wonderful socks . The weight is perfect !! These do not slip when in a shoe they stay out !!
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Reviewed in the United States on April 14, 2026
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Monica Alzate
Lowell, US
★★★★★ 4
Amazing but quality changed
Size: Large, Color: (002) Black / Black / Halo Gray
Love these socks so much, been buying them for about 4 years now!! Not giving them 5 stars anymore because the quality is different and not as good, durable and thick as before.
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Reviewed in the United States on July 10, 2025
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Heather260
Bozeman, US
★★★★★ 5
The best no show socks
The only no show socks I have ever found that do not slide down. These are very comfortable and the extra tab on the back provides comfort by keeping shoes from rubbing the back of your foot. The top of the sock also comes up high enough to cushion the top of your foot all while still remaining hidden while wearing tennis shoes or even with my hey dudes.
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Reviewed in the United States on November 30, 2025
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Nick
Carnegie, US
★★★★★ 5
Great quality and fast shipping
Size: Medium, Color: (001) Black / Black / Castlerock
These socks are tight but after the first wash and dry , they fit perfect and NEVER slide off , ordered a second pack
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Reviewed in the United States on March 24, 2026

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