The 4020 Retro EQ HD from McDSP is a 4-band EQ and filter set. The high-frequency (HF) and low-frequency (LF) bands are shelving EQ, with two additional high-mid and low-mid frequency parametric EQ bands. All EQ bands operate on a gain dependent variable Q system for a vintage smooth sound.
The HF and LF filters use a split-octave design that provides a 12dB/octave slope near the selected frequency, with a maximum slope of 24dB/octave. The plug-in uses an output stage topology designed by the company to eliminate digital clipping at any output level and produce a smoother distortion characteristic.
The HD plug-in provides TDM functioning for Pro Tool HD, but also includes an Audio Units version for use with DAWs that support the format, including Logic, Digital Performer (DP) and Ableton Live. Additionally, a third party software application that supports the TDM, RTAS, or AudioSuite plug-in standard can also be used.
Note: iLok required if one is not already on the system.
4020 Retro EQ
Unique original algorithms with transparent yet vintage sound
Variable slope filtering
Variable Q/slope shelving and parametric EQ
Anti-Clip output stage topology
Analog Saturation Modeling
Double precision processing
Ultra low latency
Mono and stereo versions
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Mac OS 10.5.x (Leopard), 10.6.x (Snow Leopard) Compatible with Pro Tools HD, LE and M-Powered systems as well as Audio Unit compatible DAWs including Logic, Digital Performer (DP) and Ableton Live (additionally, a third party software application that supports the TDM, RTAS, or AudioSuite plug-in standard may be supported)
PC Windows XP, Vista, and Windows 7 Third party software application that supports the TDM and RTAS plug-in standards
Pro Tools HD on the PC is only supported under Windows 7
McDSP 4020 Retro EQ HD v5 - EQ and Filter Plug-In (TDM/RTAS/AU) Review