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AXP SoftAmp 3OD
Vacuum Triode Stage simulator.
A single triode stage circuit typical for guitar preamps is captured in this plugin. The model engine is based on a system of non-linear ODEs. Some smart calculation techniques are used to reduce the computational load.
This effect could be used to apply mild tube overdrive to add some presence to your tracks, or you could chain a couple of instances together for a full-blown high-gain overdrive. You may want to throw in some EQ as well to better shape the signal and use a poweramp/speaker simulator afterwards.
The plugin UI has a real-time transfer characteristic plot display. It provides an overview of the things going on inside the tube. It also has a peak-detecting algorithm that will flash a line when the level exceeds 0dB. You can monitor stereo channels separately or at once by clicking the corresponding buttons under the plot display.
16x switchable oversampling is also implemented to reduce the aliasing effects. Please note that for the most time the aliasing is low enough to switch off the oversampling. When oversampling is enabled, the plot display will not be of much use, because of the phase smearing introduced by the oversampling filters. Still good enough for monitoring the in/out levels.
The model has 3 core controls to configure the circuit:
The gain/level controls are combined into a single knob that is operated with left and right mouse buttons.
The "Normalize Output" control enables the normalization of peak-to-peak output voltage swing across all triode configurations, particularly different plate voltages. By default it's turned off to reflect the natural triode stage behavior, which could be regarded as a normalized small-signal gain.
Please note that output signal is not clipped at 0dB to let you overdrive chained stages using more that one plugin instance connected in series. Make sure to watch the output level or use a hard limiter somewhere in your signal chain.
Clicking on the SoftAmp logo in the plugin will bring up the "About" window with a version number and contact details.
Thanks to everyone who has voted for SoftAmp 3OD in the Developer Challenge and used it in their work.
Unzip the archive and put the "AXP SoftAmp 3OD.dll" or "AXP SoftAmp 3OD x64.dll" to
your VST folder. Make sure to select the one appropriate for your system (Win32 or x64).
This software is licensed for an unlimited usage by everyone, including personal,
commercial and scientific applications. You are NOT allowed to modify it (including both the binary code and the copyright information) or sell it, in either stand-alone or
bundled form. The plug-in is provided "as is" without a warranty of any kind. In no event I shall be liable for any damage associated with the usage of this software. I encourage further distribution by sharing a link to the effect web page.
Please send your questions and suggestions to my e-mail or post them on the site.
VST is a registered trademark of Steinberg, GmbH.
AXP SoftAmp 3OD (c) 2012-2013 Alexander Petrov-Savchenko.