Classic low-pass gates are probably best associated with the Buchla modulars. However, Rabid Elephant decided against the vactrols, aiming to produce something faster, more accurate, durable and natural-sounding.
RZ062 is a faithful recreation of a valve EQ that was made by Siemens in the 1950s — or rather, of two different valve EQs, because Audified have modelled both ‘A’ and ‘B’ versions of this processor as separate plug-ins.
We’re used to seeing convolution technology in plug-ins, but recent years have seen this increasingly appearing in hardware form. DigiTech’s take on this is a compact stompbox-format dual-channel cabinet emulator.