For Fastest Service:

If you need repairs, technical help, or replacement parts, see our repairs page, or contact

If you have questions about an order, marketing, or international shipping then contact

If you have questions about ZVEX Synth Modules contact

If you want custom artwork on your pedal, see the custom requests page.

Contact Information:

Zachary Vex Effects
PO Box 16078
Minneapolis, MN 55416




4301 HW7 Dock 3
St. Louis Park
United States


ZVEX makes effects pedals and amps for guitar and bass and we've been at it since 1995. Our line is a unique blend of no-rules engineering and artistic whim, from our affordable Vexter series to our hand painted and custom designed items.


Hand Painted Pedals

Hand painted pedals are warranted to be free from manufacturing defects for as long as I am on the planet. Due to the hand-painted nature of our products: colors, styles, and designs may vary. The finish may have naturally occurring flaws, which are not covered by warranty.

Vexter Series Pedals

Vexter series pedals (non hand-painted) carry a 1-year non-transferrable warranty against manufacturing defects, which may be extended to 2 years by registering the product/sending in the warranty card. 

Our repair policy

Contact us FIRST before returning anything to get an RMA (Return to Manufacturer Authorization) number and return instructions. We will request a small payment for return shipping and handling. Paypal or Credit cards are okay but they have a small surcharge. ZVEX Effects reserves the right to either repair or replace your pedal with one of equivalent value, at our discretion. 

Please contact us using the form at the bottom of this page, or at 952-922-8320, before sending a pedal in for repair. We will fill you in with the return insructions and assign you an RMA number. We will also be able to help you with any questions you have.


The very FIRST thing you should do if you have any trouble with your pedal is to replace the battery with a fresh, new battery, just out of the package. You'd be surprised how many people send us their pedals swearing they're broken when all it needed was a fresh battery (and not one that you've pulled out of another pedal, mind you). Below are some of the more common problems people have. Most can easily be fixed without sending the pedal to us for repair. 


Possible Cause


The pedal sounds weak, silent, behaves oddly, or sequence is stuck at one step. Guitar signal is audible when the effect is bypassed.

Dead battery.

Replace battery.

Battery is good, but the effect will not turn on and the LEDs will not light.

1) Battery clip wire broken.

2) Stereo cord/plug is connected to input jack so battery is disconnected.

1) Click Request Repairs below.

2) This is surprisingly common. Use mono cords only.

Power plate used, but effect won't work. Effect may make popping noise when turned on.

1) 9V connector shorting inside.

2) 9V connector disconnected inside and shorting against jack.

1) Wrap 9V connectors with tape to insulate.

2) Reconnect 9V connectors and wrap with tape to insulate.

Fuzz Factory squeals, but no guitar is audible. Sequencer runs or other pedals appear to turn on, but no effected guitar is audible. Guitar is audible when the effect is bypassed.

Pedal is plugged in backwards.

Reverse input/output cords.

Copper plate on probe seems to have lost its sensitivity.

1) Battery dead. 

2) Grounded metal object near probe such as a shielded cord, another pedal, or pedal board frame.

3) Someone has tweaked the "RF" trim pot on the bottom of the pedal so that it's no longer at factory setting.

1) Replace with 9V alkaline-type.

2) Move grounded metal objects away from probe antenna.

3) Check the instruction sheet for your probe to see how to properly adjust the sensitivity. If that doesn't seem to be helpful enough, go ahead and click Request Repairs below and we will give you a more detailed run through.

Your older model Super Hard On (Pre-2002) suddenly doesn't work.

The transistor has blown due to a burst of static electricity.

To temporarily fix the problem, replace the transistor with the one that is taped inside the box. To permanently fix the problem, click Request Repairs below and ask for the "SHO update mod" to be done.

Nano's red fuse light comes on when powered up.

If the Nano is in cooler environments (below 65 degrees F or 18 degrees C), it has trouble starting and the red fuse light comes on.

Let your Nano sit for a couple minutes so the fuse has a chance to cool and reset. With the adapter plugged into the AC mains, plug the power cord into the Nano and quickly check to see if the blue LED dims. If so, quickly unplug the power supply from the back of the Nano. Immediately reconnect while watching the blue power LED. If it dims again, repeat the process of unplugging and reconnecting. It should work after a few tries. If you continue to have trouble, click Request Repairs below.