IPA 25 Multi-VCA Dynamics Processor

The deal

$99 at KVR Marketplace (down from $129). Sale ends April 28, 2026 - about three weeks out.

What it is

The IPA 25 is a circuit-modeled multi-VCA dynamics processor from Pulsar Audio. It starts from a structurally accurate model of the original THAT Corp VCA topology and extends it with tools the hardware never had - three switchable VCA topologies (P&P, IPA, Diode), each with its own harmonic character, plus an integrated clipper and limiter. The result is a compressor that behaves like the original in a mix while giving you far more control than any hardware unit.

Who it's for

Mix engineers and producers who work regularly on drums, buses, and full mixes and want a single dynamics plugin that can cover compression, clipping, and limiting in one chain. If you find yourself reaching for an API 2500-style compressor and then reaching for a separate clipper or limiter, this is built to replace that workflow.

Key features

• Three VCA topologies (P&P, IPA, Diode) let you switch harmonic character instantly without resetting parameters, so you can audition all three on a drum bus in seconds
• A visual four-band sidechain EQ lets you sculpt the detector signal in real time - rolling off low-end from the detection path no longer requires guesswork
• Lookahead and Lookbehind timing controls give you precise transient shaping - Lookbehind in particular is useful for letting drum attacks breathe while tightening the sustain
• The integrated clipper and limiter can be placed in three different positions in the signal chain, with the limiter designed to intervene only on overshoots rather than affecting sustained low-frequency content