Class-A Duo


Released on January 26, 2017.



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

112 VC15
212 VC30


"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.



"57" based on a modern production Shure SM57 dynamic mic.
"70" based on a Microtech Gefell UMT70S condenser mic.
"121" based on a Royer R121 ribbon mic.
"160" based on a Beyerdynamic M160 ribbon mic.
"414" based on an AKG C414B-ULS condenser mic.
"421" based on a vintage Telefunken MD421 dynamic mic.
"MID" based on a mid field placed AEA R92 ribbon mic.
"REAR" based on a vintage Neumann KM84 condenser mic.
"ROOM" based on a vintage Neumann KM84 condenser mic.

Also included but not pictured:
"SM58" based on a modern production Shure SM58 dynamic mic.


Power Amplification
• neutral tube amp

• Prism Orpheus

Microphone Amplification
• BAE 1073mp

• Vovox Sonorus



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
  • mono channel count
  • minimum phase transformed ("Mpt") and non-minimum phase transformed
  • 200 and 500 ms decay tail lengths
For added convenience, .wav files appropriate for conversion or submission to the following platforms have been separated out and designated within the library structure:
  • Atomic Amplifire
  • Fractal Audio Systems hardware/software
  • Kemper Profiling Amp
  • Line 6 Helix
  • Two Notes hardware

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.



Main Folder:

Cab Blends:

Single Cabs:


Folder Structure:
Single Cab Speakers

Mics Per Speaker

Mixes Per Speaker

Speaker Quick Start

Total Amount of Unique Files: 8320 IR's

See the TUTORIALS section for simple quick-use tips and a tone chart!


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