QuarterMaster QMX - 4

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Simple loop switching for your pedals

High-quality true bypass strip loop control for your effects pedals. Compact easy switching solution to keep your tone intact. 

TheGigRig QMX has all the same great features as the standard QuarterMaster including; 

1. Uses TheGigRig 'True Bypass' relay technology keeping your tone perfectly intact and your switching quiet. 
2. Tough aluminium enclosure and small footprint will keep your pedalboard light and compact 
3. Uses the new GigRig 'OptoKick' Optical Foot switch which we believe is the most reliable foot switch in the world.

PLUS, the QMX has a very clever ace up its sleeve. 

Each loop has a push button next to the loop return that gives you the option to turn a standard loop into a flip/flop loop. 
Instantly switch between any selected loops while adding other loops on top. Its great if there are effects on your board that you never stack like multiple delays, or drive units. 
By using the QMX returns as instrument inputs you can easily and quietly switch between your favourite guitars 

For your simple compact board, TheGigRig QuarterMaster QMX just makes life that little bit easier. 

Quartermasters - there are 5 size options

QMX2 - 9V/100mA / 16cm x 4cm x 5.8cm / 6.30in x 1.57in x 2.28in / 0.24kg / 0.5lbs

QMX4 - 9V/200mA / 28cm x 4cm x 5.8cm / 11.02in x 1.57in x 2.28in / 0.42kg / 0.9lbs

QMX6 - 9v/300mA / 41cm x 4cm x 5.8cm / 16.14in x 1.57in x 2.28in / 0.62kg / 1.4lbs

QMX8 - 9v/400mA / 54cm x 4cm x 5.8cm / 21.26in x 1.57in x 2.28in / 0.80kg / 1.8lbs

QMX10 - 9v/500mA / 68cm x 4cm x 5.8cm / 26.77in x 1.57in x 2.28in / 0.99kg / 2.2lbs


The GigRig warrants the product to be free from defects in material and workmanship for a period of 2 years from the original date of purchase. If the product fails within the warranty period, The GigRig will repair or, at our discretion, replace the product and cover the cost of return shipping to the original purchaser. This warranty covers defects in manufacturing discovered while using this product as recommended by The GigRig. This warranty does not cover loss or theft, nor does the coverage extend to damage caused by misuse, abuse, unauthorized modification, improper storage, lightning, or natural disasters. Damage caused by any of the above circumstances may result in a non-warranty repair fee. Legal: In the case of malfunction, the purchaser’s sole recourse shall be repair or replacement, as described in the preceding paragraphs. The GigRig will not be held liable to any party for damages that result from the failure of this product. Damages excluded include, but are not limited to, the following: lost profits, lost savings, damage to other equipment, and incidental or consequential damages arising from the use, or inability to use this product. In no event will The GigRig be liable for more than the amount of the purchase price, not to exceed the current retail price of the product. The GigRig disclaims any other warranties, express or implied. By using the product, the user accepts all terms herein.

23 Reviews Hide Reviews Show Reviews

  • 5
    Qmx 4

    Posted by David L Rundell on Jul 5th 2021

    Nice made my Pedal Tran Novo 18 build great. Love the ability to instantly change tones without having to have a large board or do alot of programing .

  • 5
    Quatermaster qmx 4

    Posted by Alex A. on Nov 16th 2020

    I just recieved my gigrig Quatermaster qmx 4. I have to say this is hands down the best loop switcher out there. My tone has never been better and I love the silent footswitchs. Plus the flip flop function is great!

  • 5
    Easy on the finger and new pesky buffers.

    Posted by Charles Shapiro on Sep 7th 2020

    First of all, I have spent several decades pushing effect switch buttons with my finger. My fingers are killing me! These button are like a dream to push with finger or feet, (if you have to use them). Secondly, it is beyond my understanding as to why pedal makers insist on, always on buffers. Put a switch in there! If I want a buffer, I will buy a stand alone good buffer. If you stack pedals, which if you have enough time and money, you will find the perfect pedal combination for your tone. But after about 3 always on buffers...that what predominates: ' always on buffer' sound. I have a chain of 6 stacked pedals. So even if there are 3 pedals on, I got 6 buffers! With Gig Rig, I switch off 3 pedals and I have three pedals and it sounds great. Further, II have 2 pairs of the same pedals. What sounds worse than 6 buffers on. Two buffers from the same vendor. So now, I push that switch in, on the jack field (Red LED), and I toggle between 2 pedals with different settings from the same manufacture. No more buffer overload.

  • 5
    Exactly what it should be

    Posted by Jack Sharkey on Jun 22nd 2020

    This loop switcher works perfectly with no problems/issues, and can do exactly what you want/need it to do perfectly. Additionally, product is very well-made.

  • 5
    Absolutely Perfect

    Posted by John on Jun 9th 2020

    I've only been using this for a few weeks now, but I absolutely love this switcher pedal. I use loop 1 for my tuner and the rest of the loops for my different drive types. It was nice that it came with a plug to setup one loop specifically for a tuner loop. Really should have bought this sooner. No more dancing around to hit the right pedals on and off anymore. I even have the second loop setup for my always on drive (Wampler ego into Greer Lightspeed). I may have to order a second one for another pedalboard in the future.

  • 5

    Posted by Eric on Apr 23rd 2020

    This QMX-4 is exactly what I was looking for to switch between overdrives and distortions on my compact pedalboard. The build quality is immaculate and the product is very sturdy. I have already recommended this product to multiple people and will continue doing so. This product has also convinced me to order other GIGRIG products to complete my pedal board.

  • 5
    Awesome tool!

    Posted by Tempest on Jun 10th 2019

    I’m using this on my bass pedalboard in flip flop mode to cycle through different preamps. It’s built well, dead quiet. Awesome product.

  • 5
    QMX - 4

    Posted by Tony on May 8th 2019

    Switching is so seamless, it’s amazing. It’s built well and sounds great!

  • 5
    Works perfectly

    Posted by Mark B-H on Apr 9th 2019

    Really nice switcher. Easy to use, works perfectly. Draws a surprising amount of power for its purpose, but that's OK, I'm sure it needs it for the opto switching and stuff. I'm running it from one of the higher-output plugs on my Voodoo power source. It works just fine.

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