Mixing

QB3

QB3 is a free equalizer VST plugin developed by de la Mancha. Compatible OS(s): Windows.

QB3 is a vintage-style, 3-band EQ plug-in, with its own unique colouring and a few tricks up its sleeve. For each band you can adjust the centre frequency and gain. For the low and high shelving bands you can adjust the steepness of the slope, whilst for the mid peaking band you can adjust the bandwidth. This allows a range of sounds from steep, sharp cuts to smooth and gentle boosts.

But the “Queen Bee” is not a super clean and transparent plug-in. QB-3 features a pleasing combination of harmonics, saturation and low level noise to bring a subtle mojo to your sound. You also have the option to switch on a 40Hz cut to boost your low frequency headroom and a limiter to curb any peaks.

Features:

Vintage-style, 3-band EQ.

Subtle colouring from a home-made blend of harmonics, saturation and low level noise.

Full Stereo processing.

Centre frequency adjustable for each band.

Gain adjusts positively and negatively for each band.

Low and High bands have adjustable slope, including negative ‘resonant’ like curve.

Mid band has adjustable bandwidth for narrow to wide curves.

Master gain control.

Optional 40Hz cut for low frequency optimisation.

Optional limiting on final output.

Non-linear knobs for precise control at small values, with double-click reset to default value.

33 Presets covering many different configurations.

https://delamanchavst.wordpress.com

Q-meleon

Q-meleon is a free equalizer VST plugin developed by madBee :: audio. Compatible OS(s): Windows.

This plug-in allows you to design your own equalizer by acting on parameters that change the curves behavior.

Specs:

Double precision filters.

Automatic band width correction at Nyquist frequency when working below 48 kHz.

Two GUI modes: really simple or highly editable.

Integrated help window.

Some presets based on classic gear.

Two saturation modes: Soft clip (only odd harmonics) and Tube (even and odd harmonics).

https://madbeeaudio.wordpress.com/

PWMDrive

PWMDrive is a free overdrive and saturation VST plugin developed by Audjoo. Compatible OS(s): Windows.

PWMDrive features “non-symmetrical” distortion and (optional) 8x oversampling.

The steps performed are:

Measure the amplitude.

DC-Offset signal depending on amplitude (LFO controlled).

Gain.

SoftClip.

HiPass (to remove DC).

Gain.

http://www.audjoo.com/

Pushtec 5+1A

Pushtec 5+1A is a free equalizer VST plugin developed by Leftover Lasagne. Compatible OS(s): Windows.

Pushtec 5+1A is a 6-band mid-range and program EQ. A Winamp plugin version is also included.

http://leftoverlasagne.googlepages.com/

Pulse Width Modifier

Pulse Width Modifier is a free exciter and enhancer VST plugin developed by Anarchy Sound Software. Compatible OS(s): Windows.

Pulse Width Modifier uses a procedurally controlled variable length delay line to compress the pulsewidth of the input signal’s fundamental frequency. This acts as a harmonic exciter and an interesting distorter of unrelated frequencies.

http://anarchysoundsoftware.co.uk/anarchysoundsoftware/

PTEq-X

PTEq-X is a free overdrive and saturation and eq VST, VST3, Audio Unit plugin developed by Ignite Amps. Compatible OS(s): Windows 64b, macOS.

PTEq-X is a digital emulation of 3 famous vintage passive program equalizers.

It has been developed to have all the characteristics of the original hardware, plus some circuit improvements and additional features to increase its versatility.
Every single component on the signal path of the real analog circuit has been taken into account and modeled in the best possible way to match the original sound, keeping an eye on CPU performance and real-time playability at the same time.
PTEq-X is meant to be used as a studio equalizer for tracking, mixing and mastering inside hosts capable of VST or AU Plug-Ins support.

Main Features:

Three different equalization modules with perfectly analog curve response even at highest frequencies.

Ignite Amps 3rd generation triode stage analog modeling for 4 different tube types.

Additional selectable frequencies for the PEQ1A model, compared to the original design.

Refined filters frequency precision for the MQ5 and HL3C models, compared to the original design.

Switchable equalizers and tube stage modeling for better CPU usage management.

Switchable linear phase oversampling for aliasing reduction.

Global input / output level controls.

Mono / Stereo processing support.

Double precision (64-bit) floating point processing.

Fully automatable controls.

Ignite Amps proprietary preset management system with bank file import/export functions.

http://www.igniteamps.com/

PSP VintageMeter

PSP VintageMeter is a free vu meter VST, Audio Unit, RTAS, DirectX plugin developed by PSPaudioware. Compatible OS(s): Windows, macOS.

PSP VintageMeter provides professional VU and PPM metering for mono and stereo tracks. All parameters like integration times and reference levels are widely adjustable to make this free plug-in suitable for any application. This plugin is used by top electronic music producers such as Fred Again or Skrillex

http://www.pspaudioware.com/

ProMeter

ProMeter is a free metering VST, VST3 plugin developed by Bakuage. Compatible OS(s): Windows 64b.

ProMeter is a VST Analyzer plug-in that measures “professionality”. “Professionality” is an index that shows how close it is to professional sound (sound of commercially CD). It is calculated based on the learning result of the actual commercial CD. Originally it was an indicator that can be measured with AI Mastering an automated online mastering service. In order to approach professional sound in the mixing stage, we made it possible to measure “professionality” in real time with VST.

Pricing

Currently, the use of this plugin is limited to those who have registered the premium plan of AI Mastering. Those who have registered in the premium plan in the past can use it even if they canceled afterwards.

AI Mastering Premium Plan: $29.99/month.

Evaluation

No license registration is necessary to use this plugin. Please feel free to evaluate it.

https://aimastering.com/

ProgressComp

ProgressComp is a free compressor VST plugin developed by Progress Audio. Compatible OS(s): Windows.

ProgressComp is the same compressor as found on Progress Audio’s commercial
ShapeShifter multi-effect plug-in. It features quick-and-easy-to-use controls for fast setup, but is still capable of a wide range of sounds.http://www.progressaudio.co.uk/

ProgOsc

ProgOsc is a free oscilloscope VST plugin developed by Progress Audio. Compatible OS(s): Windows.

Features:

X & Y scale knobs adjust the zoom on the screen.

Update control allows you to set how quickly the screen redraws.

Slide switch lets you monitor just the left channel, just the right, or both at the same time (each channel is drawn using a different colour on the graph).

http://www.progressaudio.co.uk/