“HoRNet Valvola (the Italian word for vacuum tube) it’s an emulation of the electric behavior of a vacuum tube and its surrounding circuit.
The sound of the plugin is as close as you can get to the real tube behavior since the code it’s the direct modeling of the circuit characteristics obtained directly simulating the tube and the biasing circuit around it.
The same technology is found inside our Guitar Kit plugin and Analog Stage plugin and we decided to give it away for free because we are proud of it.
Valvola comes with many different vacuum tube emulations, including triodes and pentodes, from the classic 12AX7 used in pre amplifiers to the EL84 power tube, well using more than one instance of Valvola you could create your little tube amplifier emulation.
The typical tube distortion that Valvola provides is not static but changes with your music since tubes has some kind of “memory effect” that actually change their bias point if they processed high levels (this is the case with heavy bass drums, bass synths or guitars) in practice they distort more with low frequency peaks. Also vacuum tubes are not linear in frequency response and each one has its own characteristic sound that we carefully modeled using the original tube parameters.
All these interactions are controlled using just one “saturation” knob that also keeps the level constant so you can just add distortion without adding gain and keeping the aliasing at minimum thanks to the intelligent oversampling up to 4x.
HoRNet Valvola comes with an hardware accelerated graphic interface that is completely resizable and drawn using vectorial techniques so that it looks sharp and perfect on every monitor size.
We also added the “load” and “save” buttons so you can quickly create your presets and reuse them in your projects.
HoRNet Valvola 1.1.0 is available, this update is free and includes:
- Added output knob control
- Added circuit type selection
- Fixed issue with VST3 not working in some DAWs
- Tube circuit emulation using electrical simulation
- Seven different tube types including triodes and pentodes
- Intelligent oversampling up to 4x
- macOS (10.11 and later) and Windows (Vista and later) support.
- 64-bit only on both on Mac and Windows.
- Audio Units VST2.4, VST3 and AAX format.”
Source : hornetplugins.com