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4020 Retro EQGet Demo Buy HD Buy Native

The 4020 Retro EQ is a four-band EQ and complimentary filter set. The HF and LF bands are shelving EQ, with two additional parametric EQs at the HMF and LMF bands. All EQ bands operate on a unique gain dependent variable slope/Q system for a vintage smooth sound and increased boost/cut frequency selectivity high gains. The HPF and LPF filters use a unique split-octave design giving a 12 dB/Oct slope near the selected frequency, and a maximum slope of 24 dB/Oct.

All Retro plug-ins use a McDSP designed output stage topology to eliminate digital clipping at any output level and produce a smoother distortion characteristic. This feature is in addition to the analog saturation modeling that has made McDSP famous over the last decade.

Retro plug-ins are a line of ‘classics’ that can live up to their own name without emulating something else.

For more information, check out the Colin’s Corner article about this product.


  • 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
HD v6: AAX DSP/Native, AU, VST
Native v6: AAX Native, AU, VST

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    Colin’s Corner

    Founder of McDSP talks about product design, implementation and all of the nitty gritty features in each product. Learn to be a power user of 4020 Retro EQ by reading the article here.

  • Justin Meldal-Johnsen (Paramore, M83, Young the Giant)

    “I quickly found out that I could rely on the 4020 Retro EQ to inject a richer, smoother, and more finessed sound in the box, while working with the same speed that I typically do.”

  • Nick Radovanovic (Melissa Etheridge, Skillet, Eric Hutchinson)

    “I just finished mixing the new Melissa Etheridge record. Love that 4020 Retro EQ, it’s all over the record.”

  • AAX Optimized

    Every v6 plug-in has been AAX Optimized to take advantage of the new Pro Tools specification. Learn what that means for you and your audio.

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    Pairs Well With…

    4030 Retro Compressor has the perfect vintage compressor vibe to work with your 4020 Retro EQ.

  • Save With A Bundle

    Whether it’s the Classic Pack, Emerald, or Everything Pack, save more money when you buy a bundle!