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V6
Northlane DSP·Released 2026-03-02·Mastering

VelvetFilter 6

Cohesive mastering chain featuring EQ, compression, saturation, and true-peak limiting.

Download (8.5 MB)

Overview

VelvetFilter 6 is a mastering plugin engineered by Northlane DSP. It's designed for use inside Equalizer APO as a VST insert, giving you studio-quality processing at negligible CPU cost. Ideal for streamers, podcasters, and producers who want reliable, hi-fi audio processing without opening a full DAW.

  • Ultra-low latency processing
  • Sample-accurate automation
  • CPU-efficient DSP
  • Preset system with A/B compare
  • Sidechain-ready routing
  • Full 64-bit internal precision

Screenshots

Main interface
THRESH
RATIO
ATTACK
RELEASE
Preset browser
THRESH
RATIO
ATTACK
RELEASE

Installation guide — Equalizer APO

  1. 1
    Download
    Save the ZIP file for VelvetFilter 6 to a folder you'll remember.
  2. 2
    Extract
    Right-click the ZIP and choose Extract All. ZIP, RAR, and 7Z are all supported by tools like 7-Zip or WinRAR.
  3. 3
    Locate the DLL
    Inside the extracted folder you'll find SweetDrums_x64.dll. Move it into a permanent VST folder (e.g. C:\VstPlugins).
  4. 4
    Open Equalizer APO Configurator
    Enable APO for the device you want to process (e.g. your microphone).
  5. 5
    Open the Configuration Editor
    Click the + icon on any line and choose Plugins → VST plugin.
  6. 6
    Browse and select the DLL
    Point Equalizer APO to SweetDrums_x64.dll and click Open.
  7. 7
    Configure
    Tweak the plugin's parameters in the popup. Changes apply live to your audio device.
  8. 8
    Save & restart audio service (if needed)
    Save the configuration. If audio glitches, restart the Windows Audio service or reboot.
  9. 9
    Done
    VelvetFilter 6 is now processing your audio in real time.

Troubleshooting

Plugin not showing
Confirm the DLL matches your Equalizer APO architecture (64-bit APO requires a 64-bit DLL).
DLL won't load
Install the latest Microsoft Visual C++ Runtime redistributables (x64 and x86).
Plugin crashes
Update your audio drivers and make sure no other host is currently loading the DLL.
No audio after enabling
Toggle the plugin off/on in APO, then restart the Windows Audio service.
Wrong architecture
Use the x64 DLL with 64-bit APO. Do not mix 32-bit and 64-bit binaries.
Missing dependencies
Some plugins require the VC++ 2015–2022 redistributable; install both x64 and x86 packages.

Changelog

  • v3.3.3
    2026-03-11
    Performance improvements and small UI polish.
  • v3.3.2
    2026-02-21
    Added preset browser, new modulation shapes.
  • v3.3.1
    2026-01-15
    Initial public release.

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