Primal Audio has released Acid Diode Ladder Filter, a filter Rack Extension for Propellerhead Reason.

Primal Audio Acid feat

ACID is an analogue-modelled low-pass filter. Based on the characteristic diode ladder filter design from the vintage Roland TB-303 synthesizer, ACID brings the squelchy sound of the original unit to the Reason Rack.

ACID uses cutting-edge DSP rooted in techniques used in industrial circuit simulators to accurately model its analogue components. Furthermore it extends the original filter with an envelope follower, resulting in a versatile unit capable of many types of effects from gentle overdrive and adding some bite to samples to transforming dull synth sequences into bubbly, acidy riffs.

Acid Diode Ladder Filter features

  • Low-pass filter: 24dB/oct squelchy low-pass filter based on the TB-303 diode ladder filter circuit.
  • Envelope follower: Envelope Follower with external side chain for organic filter modulation.
  • Industrial circuit simulation: Techniques used from industrial circuit simulators to accurately model the electric components.

The Acid Diode Ladder Filter is available at a 30% off intro-offer until February 22nd, 2016, priced at 19 EUR.

More information: Primal Audio / Acid Diode Ladder Filter