The Sonoris Mastering Compressor (SMCP) is a wideband mastering compressor in VST, VST3, AU, AAX and RTAS format for Windows and Mac. It is an ultra clean compressor suitable for delicate material. No odd harmonic distortion that can be found in most compressors is present in the SMCP. To reduce residual artifacts the SMCP features upsampling of the audio up to 8 times. Transparency can be further enhanced by selecting auto-release and feedback detection together with two soft knees.

If a more aggressive behavior is needed you can for example choose feedforward detection with a harder knee. It can have some "character" if pushed. If needed, the audio can be warmed up with even harmonics with the flip of a switch.

Besides working on a full mix, the SMCP can also work in split mode on the individual L,R, M or S channels or anything in between, with the variable link. The sidechain for each channel has a selectable high-pass, band-pass and low-pass filter. This gives great flexibility and allows for creative enhancement of the audio.

Product Features

Ultra clean wideband mastering compressor
Ratio ranging from 1:1 to infinity for compression and limiting
Attack ranging from 0 msec to 1 sec
Selectable auto-attack
Release ranging from 1 msec to 5 sec
Selectable auto-release ranging from 0.5 sec. to 5 sec. program dependent
Threshold ranging from "60 dBfs to 0 dBfs
Very flexible knee setting from hard to soft in 100 steps
A second knee that enables the compressor to adjust the ratio back to 1:1 above the threshold, also adjustable in 100 steps from hard to soft knee
Feedback and feedforward detector types
Selectable high-pass, band-pass and low-pass sidechain filters
3 processing modes:
Variable: sidechain linking is adjustable from fully linked to fully split
Highest Link: sidechains linked with the highest value of the left and right channel
MS Split: sidechain signals split with the mid and side channels
Make up gain ranging from " 18 dB to + 18 dB
2x, 4x, 8x or auto upsampling for even less artifacts
Selectable gentle even harmonic distortion on the output
Parallel compression fader
A/B comparison
Large graphical display with dragable handles for maximum control
Scalable user interface
Gain transfer plot
High resolution gain reduction meter.
High resolution level meter with resettable peak indicator.
Full automation possible
Mousewheel support
Settings can be saved and loaded
64 bit internal resolution
Windows 32/64 bit VST, VST3 and AAX versions
Mac OS Universal Binary 32/64 bit VST, VST3, AU and AAX versions
Mac OS Universal Binary and Windows RTAS versions
Easy Online License Activation
USB drive based license activation for offline computers

Metering & Analysis

Sonoris Mastering Compressor