Amp sims Best of 2018 Kuassa

Kuassa Amplifikation Caliburn

UsesRhythm, Lead, Crunch, Clean
Version reviewed1.0.5
Score: 4/5
Score: 4 / 5


Show me a Marshall sim and I will show you my enthusiasm immediately. I am a Marshall fanatic. I have owned 10+ Marshall amps in hardware form and it’s sort of an amp that I grew up appreciating because my Dad always had Marshall amps around the house when I was kid.

From Jimi Hendrix, Yngwie Malmsteen, Slash, Angus Young, Dave Mustaine, Lemmy and all the other guys that I grew up idolizing were always standing in front of the black and gold. It was like a mythical thing to me until I got to play on one. I think every guitarist remembers his first rip on a stack and mine just happened to be a 2×412 JCM 800 stack at age 12.

I am not one of those rich amp collectors, I just ran into a couple good trades and deals that led to me owning a JCM 800, JMP and Jubilee. I actually found the Jubilee at the landfill in need of repairs but that’s a story for another day.

I am a little confused by the name Caliburn for a British amp plugin but it still sounds cool anyways.


The looks are simple but effective, the layout is easy going and everything I need is right in front of me. They make experimenting with the Caliburn a lot of fun because they give you piles and piles of tone possibilities here.

I really like when a developer has a really solid starting point when I first load up a plugin. It always makes the very first impression a lot better. The initial tone you get when you open the plugin is well rounded.

You get a JTM45, JCM 800 and a JCM 900. Two of these are high on my all time list and the other is…. Not as much but still cool. I have a hate/hate relationship with the original JCM 900 but the plugin version is pretty enjoyable.

I started with the 900 because I wanted to get the negatives out of the way first but when I laid into a few chords and notes, I had to sit and appreciate that Kuassa has somehow shaved off a lot of the things I never liked about the 900. A little processing took care of things nicely. I also added a boost and some EQ that made the tone even better. The 900 clean is a bit clunky but if you dial back the mids a bit, it sings nicely.

I moved to the 800 with a lot of anticipation and I was not let down. There’s not much in the world of tone that I like better than a JCM800 with a tube screamer in front of it and a 412 cab to seal the deal. This 800 sounds like it’s been to the amp doctor for a few modifications but the characteristics of the 800 are there. It’s loud, ripping, shredding and cutting pleasure. Caliburn has so many rhythm and lead capabilities. It can do 80s rock, 80s thrash, stoner rock, metal and a bunch of other things just like the real JCM800. Kuassa did a great job to make sure the version of the 800 they included had the tone of the real thing while giving the user a lot more ways to change the tone than you would have with a stock JCM800.

I boosted Caliburn with a few plugins. The best two I found were Kuassa’s Efektor OD and Audified’s Multi-Drive pedal pro but it was friendly to the majority of the pedal plugins. I also tried the Brainworx metalzone plugin on the 900 mode to get some 90s hardcore tones happening. It was a fun review.

After the 800, I took a break and actually let the review sit for a few days. I feel if things are sounding too similar, you need to give your ears a break. When I came back to it I hit the JTM and I was right back in the pocket in a snap. The JTM45 2245 is in my top 5 amps and always will be so when I switched the amp, I turned up my monitors so I could test the warmth and sustain while also rocking the f**k out.

The 45 is warm, aggressive and just a little obnoxious in the right places as a good 45 should be. I am in classic rock town and there’s a chance I could end up with a mullet when this is done. The rhythm and lead tones are just as they should be as well which rounds out the realism a little more.

You can get the Caliburn to do high gain and it’s pretty decent but I did have to process it a little more than I usually would to harness a few of the unwanted frequencies created by pushing it a little passed it’s comfort zone. Still, it will do it well.

I added the Kuassa Efektor Fuzz plugin to see about the doomier side to the Caliburn. The answer is yes it can do stoner/doom. The efektor fuzz is an awesome pedal and a great mix with the Caliburn. The added strength in this department put the plugin into our list of the best Marshall sims and it will likely make a few more lists in the future.

The sim gives all of the amps clean tones even though two of them don’t have clean channels. It’s just an added bonus really. The cleans are a little bland at times, you can liven them up with some EQ and reverb to get them to take more shape.

The impulses included fit the amp sim really nicely. You can alter the mics, cabs and go with one or two impulses onboard. I also had great luck with my own impulses. I used a huge variety of 212 and 412 impulses and it seemed that a lot of Orange cab impulses were sounding really great so I focused on Orange 412 and Marshall open and closed back cabs.


Superb release from Kuassa here. I couldn’t be happier with this amp sim. Kuassa took classic Marshall amps, put their stamp on them and put together a really nice package here. I loved this plugin and I will be using it a lot in the future.

See more – Meet&Greet with the Kuassa Caliburn