This Module is currently available.
Four-Pole 24dB/Octave HPF with CEM3320 Architecture
The 3320 High-Pass Filter (HPF) is a four-pole 24dB/octave design that uses the newly re-issued and authentic CEM3320 IC.
It is the perfect partner to go along side either our 3320 Low-Pass Filter (LPF) or 2144 Low-Pass Filter (LPF), to produce a band-pass filter.
On it's own however, it shines when used on percussion or drums, along with a wide range of other applications.
Features
https://www.wavefonix.com/product-page/3320-high-pass-filter
These merchants probably sell this module. Huh?