Final Hours: Cyber Monday CouponShop now »
Top Seller

Carl Martin Octa-Switch MKII Effects Switching System  

Item #: 
  • Write a Review

Ok, so you have eight effects pedals which you use regularly. You use various combinations of these pedals in various songs, but you are not good at tap dancing…or you are just clumsy and have (once o... Read More

Your Price:
Add to Wish List
GC Gear Card
Special Financing Offers
Learn More
PICK UP IN STORE Available in: 3-7 Days (estimated) Englewood, CO (3.11  mi) Change Pick Up Store

  • Pro Coverage Eligible
  • Free Shipping
  • International Shipping

Ok, so you have eight effects pedals which you use regularly. You use various combinations of these pedals in various songs, but you are not good at tap dancing…or you are just clumsy and have (once or twice) stepped on the ultra tricked out-metalized-distortion pedal for the lead in your one ABBA cover. You have seen the digital effects controllers they use on the big stages, and have secretly yearned for one… even though you may never make the big stage.

Enter Thomas Guldmann's Octa-switch II. Your eight effects plug into the eight effects-loops on the back of this unit (all true-bypass, impedance free, gold relays so you can run any of your pedals, new and old without problem), and then by turning on or off the numbered switches in each of eight DIP Bank switches, you determine which effects you wish to use simultaneously in each Bank.

There is a blue LED for every effects loop used and for each Bank (so once you are programmed, when you step on Bank 6 you will see the lights of all the effects you have assigned to Bank 6 and the Bank 6 LED). The Octa-switch II has incorporated a couple new features as well! The ninth switch on the left side of the case is a BYPASS Switch which allows you to completely bypass all eight pedals and enjoy only the unaffected sound of your amplifier.

There are also two External Switching jacks which allow you to use two amplifiers and/or switch channels on those amps. Once you have all the Banks programmed, we recommend placing a piece of scotch or electrical tape over each DIP (just to protect the switch from accidental switching, damage or floods like beer). There is a buffered Mono input and a stereo Output, and the unit is powered by dual 9V batteries, or by a regulated power supply…like the Big John or the Pro Power (both by Carl Martin).

  • Blue LED for every effect and bank used
  • Slide type DIP switches
  • Buffer circuit at input
  • Choose between 100% true bypass or buffered bypass
  • Mono send and stereo return on stereo jack plug
  • Power: 2x9V, Battery life approx. 10 hours with average use, it can be used withexternal supply 9V regulated, 400 mA
One year parts and labor warranty.

Pro Coverage gives you added warranty protection for your new gear. Stepping in where the manufacturer's "normal wear and tear" coverage ends, our Pro Coverage program offers you upgraded coverage if your product ever fails Read More.

Pro Coverage includes
  • Accidental damage protection (new gear only)
  • Expedited repair
  • Free shipping (for returns or repairs)
  • 100% coverage for commercial use
  • Extended return period
  • Extended price protection
  • No lemon guarantee
  • Free transfer of coverage to a new owner
  • Repair costs covered for up to three years from date of purchase
  • Repair authorization-toll-free by phone or via the web
  • Customer Reviews

Review Snapshot®

by PowerReviews

(based on 1 review)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 1 customer

Displaying review 1

Back to Top

(3 of 3 customers found this review helpful)


So Happy I Bought This (the first edition, not this better one)


from Salem, Oregon

Over 5 years ago I was building an elaborate 2 board patchbay-ed together pedalboard system due to the 16 pedals that I needed quick access to, I desired patches to select verses doing a tap dance for every verse, chorus, lead solo change that came along. After doing research in my price range I settled on the original Octaswitch that was available at the time. I paid around $400 and it has been so useful. I read a few reviews on complaints of popping noises when selecting patches but I found put it only happens if something is wrong. A bad cable, bad power, power crowding audio with electrical magnetic interference, whatnot...As long as everything is correct it is great. So over a year ago and long after the warranty, I busted off one of the foot buttons. My bad. I called the company to order the part. The guy sent me the part for free. I wanted an extra one incase I am stupid again and said I would pay for that one at least and he refused. 2 for free and no shipping. That is well beyond what I expected. If something were to happen that I needed another one, I would do it again.

Comment on this review

You are changing the Ship-To country.

Our product catalog varies by country due to manufacturer restrictions. If you change the Ship-To country, some or all of the items in your cart may not ship to the new destination.