Bananalogue LPFA
A DIY or assembled Frac Rack format low-pass filter module inspired by the Arp 4075 design.
Overview
The Bananalogue LPFA is a modular synthesizer low-pass filter based on the Arp 4075 style. Bananalogue made it, mostly in Frac Rack format. It came either as a printed circuit board (PCB) for self-assembly or as a fully assembled unit. A Kickstarter campaign was launched to produce a series of these modules, which makes it a small-scale, community-driven release and not a mass-production one.
Design
The LPFA follows the design principles of the Arp 4075 filter. It was released in Frac Rack format, and the community discussed building a Eurorack version. It was sold as a PCB only or as an assembled module, so DIY builders and plug-and-play buyers were both covered.
Context
An original run of Bananalogue LPFA modules took place several years prior to 2012, and a later Kickstarter project aimed to produce more units. The module came out of a niche community of modular synth builders, and it is often discussed alongside other Arp-inspired filters like the STG Post Lawsuit Filter - though that unit is based on the Arp 4072. Leftover Arp 4075 PCBs from the original run suggest limited production volume and possible collector interest among modular synth hobbyists.
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