DDMF phi-L Audio Tube Preamp v2.0.2 x64 x86 VST VST3 AU AAX WiN MAC [FREE] 0 (0)

What is it?
This tube preamp emulation has been developed Philipp Bulling as a thesis work. Philipp has been offering the plugin in VST format for some time on his own website. He has now moved on to new areas for some time already but didn’t want to let down his users. Hence, DDMF took over the code and will continue to offer the plugin as freeware, with the intent to further improve it and maybe add some more bells and whistles in the future.

The plugin is very unique in the sense that it gives you full control over all aspects of the modelled circuit. All values of all the capacitors, resistors etc. can be tuned by the user. Here is what Philipp had written on the original page.

AbstractSince the sound of an analogue tube amplifier has always exerted a strong fascination, electrical circuits with tubes play a certain role in the world of audio engineering up to now. On the other hand, audio technology becomes more and more digitised. In many cases, digital models emulate real devices in such a way that differences in sound are hardly audible. In this work a model is developed which is able to emulate the typical sound of a tube amplifier on digital devices. Here the main focus is on preamplifiers with triodes, since they have a particular influence to the sound.

Based on the physical properties of real tubes, a tube model is developed first. This mathematical model includes results of theoretical studies as well as analysis of data sheets. The model is then used to implement an entire amplifier circuit. In addition to the tube itself amplifier circuits contain several passive elements. In the domain of digital signal processing the latter are described by finite difference equations, which are solved recursively.

The resulting algorithm is finally implemented as an audio plugin in order to examine its tonal properties. The behavior of the digital model corresponds satisfactorily to real amplifier circuits. Important sound effects of analogue tube amplifiers can also be attested to the digital model.

Diode modelThe first step was to develop a triode model, based on the characteristic curves of real tubes. In theory, the characteristic curve of a vacuum tube is described by Langmuir-Child’s law. However, it was quickly realised that compared to real tubes, this law is not accurate enough. So a new model has been developed. This model describes a triode as a mathematical function. With the model, it is possible to compute the plate voltage (Upc) as a function of the grid voltage (Ugc), depending on the working resistor (Ra) and the supply voltage (Ub).

The following graph shows this function for a 12AU7 triode with Ra = 10k and Ub = 250V:
DDMF phi-L Audio Tube Preamp v2.0.2 x64 x86 VST VST3 AU AAX WiN MAC [FREE] screenshot
Circuit modelingBased on this model, a plate follower stage was implemented.
DDMF phi-L Audio Tube Preamp v2.0.2 x64 x86 VST VST3 AU AAX WiN MAC [FREE] screenshot
Cathode biasingIn this circuit, cathode biasing is used to adjust the bias point of the tube. This is realised by a resistor (Rc) and a capacitor (Cc), placed between the cathode and ground. The effect of cathode biasing can then be modeled by a simple first order RC low pass filter, with Ic*Rc being the input of the filter, and the cathode voltage (Uc) being the output.

If the input signal jumps for example from 0 V to 5 V, the cathode voltage follows quite similar to the step response of a RC-low pass filter:
DDMF phi-L Audio Tube Preamp v2.0.2 x64 x86 VST VST3 AU AAX WiN MAC [FREE] screenshot
Signal limitingThere are two reasons for signal clipping in this circuit. The first one is caused by the tube itself. If there is a high peak at the negative half-wave of the input signal, the tube can’t amplify the signal anymore since the flow of current is completely cut-off. Thus, the positive half-wave of the output is clipped. This effect can be intensified by a more negative bias point.

Here the bias point of an 12AU7 is at around -12 V:
DDMF phi-L Audio Tube Preamp v2.0.2 x64 x86 VST VST3 AU AAX WiN MAC [FREE] screenshotThe second reason for clipping is caused by grid current. High peaks of the positive half-wave of the input signal make the grid voltage positive compared to the cathode voltage. In this case electrons are attracted by the grid. The grid current causes a voltage drop at the internal resistance of the previous stage, which limits the input signal. The following figure shows the effect. The grid voltage is obtained by shifting down the input signal (Uin) by the cathode voltage (Uc). In the upper picture the maximum grid voltage (Ugc) is ~ 0 V compared to the cathode. Hence, there is no grid current. In the lower picture the input signal has an amplitude of 10 V. At the positive peaks of the input signal the grid voltage rises above 0 V (compared to the cathode). The grid current begins to flow and clips the grid voltage.



NA_Analog_Rack_Chorus by NEMBRINI Audio [x64 VST VST3 AU AAX WiN MAC] 0 (0)

The Analog Rack Chorus plugin is a very simple but powerful chorus plugin inspired by the most famous Chorus pedals and rack effect units.

Nembrini Audio has taken the guitarists most preferred analog and digital effect pedals and has repacked it in new rack style plugins easy to use and extremely powerful at the same time, with the addition of a custom design tube preamp virtual circuit which gives color to the signal in a very special way. Just insert the Analog Rack Chorus plugin in your tracks to hear its beautiful analog tube coloration!

The Analog Rack Chorus is ideal not only for Guitarist, but for every Musician, Producer and Audio Engineer in search of the last milestone in Analog and Digital Fx plugin emulations!



NA_Analog_Rack_Delay by NEMBRINI Audio 0 (0)

The Analog Rack Delay plugin is the power of Nembrini Audio’s delay algorithms in a simple package! BPM Sync, stereo spread circuit and a very juicy sound!

Nembrini Audio has taken the guitarists most preferred analog and digital effect pedals and has repacked it in new rack style plugins easy to use and extremely powerful at the same time, with the addition of a custom design tube preamp virtual circuit which gives color to the signal in a very special way. Just insert the Analog Rack Delay plugin in your tracks to hear its beautiful analog tube coloration!

The Analog Rack Delay is ideal not only for Guitarist, but for every Musician, Producer and Audio Engineer in search of the last milestone in Analog and Digital Fx plugin emulations!



Sawrizor Lite by Sugar Audio 0 (0)

Sawrizor Lite is an all-round wavetable / saw synthesizer that combines 2 high quality saw oscillators.

By mixing different generators for each oscillator, resulting in a matrix of recorded and hand made audio material of the last decades and unique new saw combinations.

Both units have voice unison features with detune, mix and other sound fattening abilities. The sub oscillator adds punch and more character to the sound. Chorus, delay and reverb effects enrich the sound with depth.

Sawrizor is aliasing free where necessary and allows up to 8x oversampling for high SNRs. Analogue sounding resonance/damp filters and an EQ complete the clearness of the digital synthesizer !

  • Double aliasing free wavetable synthesizer with unison and sub oscillator.
  • Famous high quality saw sounds of the last decades and new creations.
  • Resonance damping filter.
  • FX section with chorus, delay, reverb and equalizer.
  • Freely resizable GUI from very small up to Ultra-HD & 5K Retina.
  • Auto off feature.
  • Theme support.

FOUR EP by SampleScience 0 (0)

Four EP is a collection of 4 electric piano sounds created using additive and FM synthesis. The sounds have been sampled at multiple velocities and embedded in a VST plugin instrument. The plugin is as simple as possible and comes with simple parameters to shape your sound. The tones the plugin produces sounds like a digital piano.



  • 4 electric piano sounds
  • LFO to pitch, amplitude, pan
  • Lowpass Filter
  • Reverb


Four EP Windows 64-bit VST v1.2.2

Mac Versions you can download at the side, but it is very slow

Voxengo SPAN 3.11 (Win/Mac) Free 0 (0)

SPAN is a free real-time “fast Fourier transform” audio spectrum analyzer AAX, AudioUnit and VST plugin for professional sound and music production applications. For the most part it was derived from Voxengo GlissEQ dynamic parametric equalizer and reproduces its spectrum analysis functionality.

SPAN provides you with a very flexible “mode” system which you can use to setup your spectrum analyzer preferences. You may specify Fourier block size in samples, FFT window overlap percentage, spectrum’s visual slope. Beside that you can choose to display secondary spectrum of a desired type (e.g. real-time maximum, all-time maximum). Spectrum can be smoothed out visually for an easier examination.

SPAN supports multi-channel analysis and can be set to display spectrums from two different channels or channel groups at the same time. Spectrum’s color can be chosen to taste.

SPAN also features output level metering with adjustable ballistics and integration time, EBU R128, K-system metering (including calibration K-system metering). SPAN displays level metering statistics, headroom estimation and true peak clipping detection. Correlation metering is available as well.

Output signal power statistics
Spectrum smoothing
User interface window resizing
True peak and clipping statistics
Correlation meter
EBU R128 LUFS/LU metering
K-system metering (unweighted)
Stereo and multi-channel analysis
Mid/side analysis
Internal channel routing
Channel grouping
Preset manager
Undo/redo history
A/B comparisons
Contextual hint messages
All sample rates support
User interface color schemes
Retina and HighDPI support

This audio plugin can be loaded into any audio host application that conforms to the AudioUnit or VST plugin specification. Plugins with AAX version available can be loaded in ProTools 12+.

This plugin is compatible with Windows (32- and 64-bit Windows XP, Vista, 7, 8, 10 and later versions) and macOS (10.7 and later versions, 64-bit Intel processor-based) computers (2.5 GHz dual-core or faster processor with at least 4 GB of system RAM, SSE4.2 instructions support required, e.g. any Intel Core i-, AMD Bulldozer- or Zen-based processor). A separate binary distribution file is available for each target computer platform and audio plugin specification. If supported on a specific processor, the plugin may internally utilize AVX2-optimized code.

Compatible Windows and macOS plugin software: Cubase, Logic Pro, ProTools, Ableton Live, Reaper, Presonus Studio One, FL Studio, Cakewalk, Nuendo, WaveLab, GarageBand, Vegas, SoundForge, Audition, Samplitude, Digital Performer, Mixcraft, Bitwig Studio, Edius, others.

If you cannot get plugin to work on macOS High Sierra/Mojave, you have to logout from the system and login again, it’s a known issue not caused by plugin’s own bug.

List of changes in version 3.11:
Added Apple Silicon native compatibility.
Added 1/48 octave spectrum smoothing option.
Improved spectrum smoothing precision.
Enabled the “asynchronous drawing” window mode on macOS; may fix the user interface “lagging”.
The “Copy to” button is now called the “Copy”: this button now copies parameters FROM the selected group, NOT TO the selected group. This should improve the workflow.
Improved font rendering slightly.




AUXTURE – Unique exploratory sampler + sequencer by Audiobulb(Payware) 0 (0)

AUXTURE – Unique exploratory sampler + sequencer

Platform: Standalone Mac and PC + Ableton M4L.

For more information visit: http://www.audiobulb.com/AUXTURE.htm

AUXTURE is a unique exploratory sampler and sequencer (AUX-Seq) which enables the user to manipulate and record single samples or entire folders of samples through gesture, randomness and modulation. Unexpected results are achieved via the audio exploration of single samples or entire folders through gestures, randomness and modulation. The software comes bundled with a ‘Slices’ folder containing 115 free to use samples.

AUXTURE processes your loaded samples across a myriad of random parameters. The results open up a unique portrayal of your sound.

When AUXTURE receives a note, it applies an exploratory set of processes resulting in unique outputs based on unexpected outcomes or happy accidents applied to your sample set.

It chooses a random sample from its memory according to a freely settable probability. It then plays it back with a rate proportional to the pitch.

Some parameters related to sample playback are directly settable, such as loop mode, pitch shift and detunes, while others are based on chance, such as choosing another sample or reverse playback.

A random delay of a few milliseconds allows a rapid and unpredictable timbre variation, while frequency and ring modulations alter the sample more heavily. For a subsequent smoothing of the sound and to ensure complete processing there are digital distortion, delay, a weird reverb and two second order filters.

Features: Multi-effect software module featuring:

▪ ADSR Envelope
▪ Timbric Delay
▪ Frequency Modulation
▪ Ring Modulation
▪ Redux Distortion
▪ Stereo Delay
▪ Weird reverb
▪ 2 x Second Order Filters with cut-off, resonance and gain controls
▪ Bandpass, Notch and Shelf Filters.

The default playback mode is looping the sample during sustain phase, it’s possible disabling this behaviour. It’s also possible to set a sample change and reverse playback probabilities.

For more information, videos, manual and sound demos visit: http://www.audiobulb.com/AUXTURE.htm

Price: 20 £

Sonicbits Exakt Lite v1.4 x64 VST2 VST3 AU WiN MAC [FREE] 0 (0)

Exakt Lite is an intuitive and user friendly FM synthesizer plugin. From the harsh digital and cold sounds known from the FM era to warm and organic sounds, Exakt Lite can create a wide range of sounds.

Exakt Lite has got 4 operators which can be arranged in the classic 8 FM algorithms with feedback on operator D. Each operator has got different waveforms such as the basic sine, saw, square and triangle. Additionally, the 8 classic waveforms from the Yamaha TX81Z are emulated.

Each operator has got a separate amplitude envelope generator supporting the classic 5 point TX envelopes. These envelopes have been modeled to mimic the TX characteristics.

The plugin UI has been created using vector graphics and supports blur free resizing.


  • 4 aliasing free Operators with classic TX waveforms
  • 12 voices
  • Drag-and-drop envelopes
  • 8 classic FM algorithms with feedback on operator D
  • Resonant filter with 24db/oct lowpass, highpass and bandpass
  • Visualization of the resulting waveform for immediate editing response
  • LFO syncable to host
  • Runs on Windows (VST 2 and VST3) and Mac (AU, VST2 and VST3), 64 bit only


Windows: Windows 8 or higher, 64bit host
Mac: macOS 10.11 (El Capitan) or higher, 64bit host. macOS 10.15 (Catalina) and 11 (Big Sur) is supported

Version 1.4

  • Fix: Support for macOS Big Sur has been added.
  • Fix: The graphic library has been updated, which improves compatibility with many DAWs.
  • Fix: Sampling frequencies above 88.2kHz crashed the plugin. This has been fixed.
  • Fix: The “Comeback Bass” preset is now installed with the correct file suffix (Windows).
  • Add: Multitouch support has been added on Windows.