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The Best Free VST Effects - Guitar Amp:

Audio production software for mastering, mixing, and music composing:

British Valve Custom:

vst effect british-valve-custom

Amp VST Effect With Bite

British Valve Custom from Studio Devil is a free tube amp modeller based on the gain structure of the popular British Valve Rock amplifiers -like the infamous Marshall tube heads. This amplifier plugin has a lot of bite and attack making it perfect for classic rock and hard rock sounds. The British Valve Custom VST is a very versatile tube amp that can satisfy most playing styles. (Studio Devil requires an e-mail registration to download the British Valve Custom amplifier)

Cortex Stack Amp:

free guitar amp cortex stack

Tube Amp Simulation With Unrivalled Sound Quality

The Cortex Amp Stack is a combination of two VST-plugins by Matthias Becker: the Cortex Guitar Amp and the OldCab (an amp cabinet simulator). The original VST's have long been out of development, in fact the creators website no longer exists, but now the VST plugins are back with an unrivalled sound quality and a modern and slick looking GUI. The Cortex effect is definitely a virtual guitar amp with it's own unique sound. Unlike most other amps simulations Cortex doesn't try to emulate old hardware guitar tube amplifiers. Instead, sound quality has been the primary focus in making the amp VST.
The sound of the Cortex amplifier is far less aggressive than other guitar amps. This free tube amplifier will enhance and improve any guitar sound you can throw at it, without making it sound like you're playing in a heavy metal band!

FreeAmp3:

audio vst plugin freeamp3

Highly Flexible Free Guitar Amp

The FreeAmp3 by Fretted Synth Audio is an amp simulator plugin with a lot of flexibility and a stunning sound. The VST features an amplifier section with control of the low, mid, and high frequency band, a gate section to shape the audio signal, and several options for colouring the sound by adding drive or making the sound warmer or brighter. You can even adjust the virtual microphone position! The FreeAmp3 plugin comes with 45 great presets, and you can choose between the version including just the FreeAmp3 or a version offering the possibility to add three additional on-board effects like a phaser or eq to the audio signal.

SimulAnalog Guitar Suite:

Free VST Plugin Guitar Suite.

Classic analog amplifier sim

The free SimulAnalog Guitar Suite is a VST plugin collection of accurately modelled analog amplifiers and other classic processors for guitarists. It contains the simulation of the two classic guitar amplifiers the Fender Twin 1969 and the Marshall JCM900, as well as the VST simulation of the following stompboxes: Boss DS-1, Boss SD-1, Tube Screamer, Oberheim PS-1, and Univox Univibe. The Guitar Suite VST plugin doesn't have a GUI of it's own, but what it lacks in appearance it makes up for in sound quality. Especially the JCM900 and Boss sims are higly recommended!
If you're not happy with the standard GUI of your VST host, you can also download Requietus' cool GUI's (as shown here to the left) for the entire SimulAnalog Guitar Suite.
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