1 on 1 Testing

Music Critic review products for professionals and enthusiasts, and are designed to help making a choice easier. Not sure which is right for you? Read on and find the perfect item for your needs. You might also be interested in our article Top 10 Rated Clean Boost Pedals for Guitar Solos in 2023

 TC Electronic Spark MiniThe first product we will be looking at is the TC Electronic Spark Mini.

 MXR M133 Micro AmpNext up is the MXR M133 Micro Amp. A much smaller cousin of the MXR we’ve already covered in our list, the M133 is branded as a ‘Micro Amp’, and we like that name, because that’s pretty much what it is. Crank up the dial and you get some serious extra boost without any real coloration. Just amplification.

Taking a closer look at the features of the MXR M133 Micro Amp

We think this little unit would be ideal when twinned with an old Marshall or Vox and either no other or a very restrained set of, pedals. There’s a bit of extra brightness when applied, but aside from that, it’s just pure, clean boost that you can feed into the amp. You’d get a really nice sound by pushing an older valve amp just a little bit harder than it’s used to.


TC Electronic Spark Mini

MXR M133 Micro Amp


+ Awesome value
+ Looks great, with fantastic attention to detail
+ PrimeTime feature is great for short bursts of boost

+ Great quality
+ Almost perfect transparency
+ Useful miniature chassis


A great looking little unit at a hard-to-beat price point make the TC Electronic Spark Mini a sound choice for anyone who needs a boost pedal that gets the job done. We’d highly recommend it if you’ve found your tone already and just want a high-quality kick in a small package.

This has been one of the top-reviewed clean boost units on the market for quite some time now, and we’d tend to agree. It does a very good job of boosting cleanly like a little preamp, and is very simple to use. The miniature chassis is also very welcome, and is almost surprising for how much of an effect the unit can have on your sound.

The Bottom Line

Check out our article Top 10 Rated Clean Boost Pedals for Guitar Solos in 2023 for more info.

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