Applied Computer Music Technologies released ACM-3SA for free, a versatile low and high-cut filter plug-in combined with an intuitive, modern stylized user interface.

Inspired by the vintage Pultec HLF-3C passive filter, the ACM-3SA perfectly complements the ACM-2SA Vintage Program EQ and ACM-5SA Vintage Mid-Range EQ. Emulating 12dB / octave low and high-cut passive filters, the ACM-3SA combines high-performance processing with an intuitive stylized user interface. A versatile general purpose filter suitable for removing rumble, hiss, and hum with the minimum loss of content.

Features:

• Easy to install.
• Smooth switching between filter settings.
• Physically modelled rotary control modes.
• Resizable graphical user interface.
• 12dB / octave low-cut (high-pass) filter.
• 12dB / octave high-cut (low-pass) filter.
• Innovative processing accurately models the analogue frequency response – without additional latency or high CPU demand, even at lower sample rates.
• VST, VST3 and CLAP plug-in for Linux.

More info and free download here: Applied Computer Music Technologies | ACM-3SA