Class-A Duo


Released on January 26, 2017.

"112 VC15" based on a Vox® AC15H1TVL open back solid mahogany 1x12 combo.

  • “BCT” based on a Celestion® Bad Cat® proprietary speaker.
  • “BLU” based on a 1963 Celestion® T530 blue AlNiCo speaker.
  • “F55” based on a 1979 Fane™ 125155 speaker.
  • “GLD” based on a Celestion® Alnico Gold speaker.

“212 VC30” is based on a Vox® AC-30/6 open back fawn 2x12 combo.

  • “BLU” based on 1963 Celestion® T530 blue AlNiCo speakers.
  • “M25” based on pre-Rola Celestion® G12M-25 speakers.
  • “SLV” based on 1969 Celestion® T1656 silver AlNiCo speakers.
  • “V3H” based on hemp cone modified Celestion® Vintage 30 speakers.

  • 6 industry standard microphones:
    57 - 70 - 121 - 160 - 414 - 421
  • 3 auxiliary capture types:
  • incremental position sweeps across speaker sweet spots
  • meticulously crafted proprietary multi-mic mixes
  • speaker mix permutations for each cabinet
  • major production/mastering grade signal chain

Please read this section carefully!

Wave Audio (.wav)

Wave audio format IR's (.wav) are compatible with convolution reverb type loaders in recording software and outboard hardware units and are provided in:

  • 24 bit resolution
  • 44.1, 48, 88.2, and 96 kHz sample rates
  • minimum phase transformed
  • mono channel count


If your platform cannot load .wav files, make sure you explore the free or commercial conversion applications available elsewhere for your device. As per Section 9. Terms of Sale of the Terms of Use Agreement, there are NO REFUNDS ON DIGITAL GOODS, which includes this library.

Class-A Duo Overview
112 VC15
Jon Symons
212 VC30
Jon Symons
"Punchy Grime"
(+ tutorial)

Included File 01:

Included File 02:

Included File 03:

Included File 04:


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Any and all third party companies and products listed or otherwise mentioned on this site may be trademarks of their respective owners and are in no way affiliated or associated with OwnHammer, LLC. Product names are referenced solely for the purpose of identifying the hardware used in the equipment chain for impulse response capture or are examples of companion products. Use of these names does not imply any cooperation or endorsement.