412 RECT Essentials


Released on September 26, 2022.

Cabinet and Speaker Type

The 412 RECT Essentials wave audio format impulse response library is based on measurement data from and seeking to recreate the sound of a MESA/BoogieŽ RectifierŽ Standard (Oversized) 4x12 closed back cabinet loaded with 2003 CelestionŽ T4335 Vintage 30 speakers.

This particular combination - largely the result of the unique tonality for this narrow space in time of this speaker model's production - results in a sound that is full yet tight in the lows, authoritative and forward in the mids, and smooth on top, with just enough bite to cut through a dense modern mix when paired with the right mic/mix selection.

The lack of overly whomping low end and harsh high end makes this file set incredibly versatile, and useful for a multitude of styles and applications.

Feature Set

  • 10 single mics (7B - 57 - 58 - 87 - 121 - 160 - 414 - 421 - 441 - 906)
  • 10 core mixes
  • 80 (r)Evolution mixes
  • 90 mic pair mix permutations
  • captured through major production/mastering grade signal chain

File Format

Wave Audio (.wav)

Wave audio format IR's (.wav) are compatible with convolution reverb type loaders in recording software and outboard hardware units. The files in this library are:
  • 24 bit resolution
  • 44.1, 48, 88.2, and 96 kHz sample rates
  • minimum phase transformed
  • 208 millisecond Mono



Included File 01:

Software & Plugins

Currently In Development
Impulse Responses

Acustica Audio N3
Fractal Audio Format
Line 6 Format
Wave Audio Format
Info & Support

I.R. Tutorials
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Terms of Use
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