Acoustic IR Sample Pack (Free)


This sample pack includes selected acoustic Impulse Responses from our full IR packs. We’ve included IR’s based on the following guitars: Martin D35 (Dread-35), McPherson Camrielle (Holy Grail), and Taylor 816 (TLR 816). Our acoustic IR’s are designed to work with a wide variety of acoustic pickups, and we’ve included all the pickup options from the full packs in this sample pack.

Categories: , SKU: IR-000



1. INTENDED FOR USE WITH ACOUSTIC GUITARS: Our acoustic IR’s are intended to be used with acoustic guitars. They are not meant to make an electric guitar sound like an acoustic guitar.

2. CROSS PLATFORM: These .WAV impulse responses can be used in any hardware or application that supports IR’s. This includes products by Line 6 (Helix, HX Stomp, HX Effects, etc), Kemper, Axe-FX, etc.

3. EXPERIMENT: We’ve included multiple options in this IR pack (more details below). The best idea is just to start experimenting with your guitar and find the IR or combinations of IR’s that sound the best. Our recommendation is to first find the pickup type that fits your guitar best (see the pickup options section), and then experiment with different mic options for that pickup type.


Our Sample pack includes selected IR’s based on three different guitars/packs:

  • Holy Grail: Based on Brian’s McPherson Camrielle. Extremely balanced with a forward midrange response.
  • Dread-35: Based on a Martin D-35. Classic dreadnaught tone. This guitar is a canon.
  • TLR 816: Based on a Taylor 816ce. The beautiful shimmery top end we know and love from Taylor, but in their Grand Symphony body shape, which adds a lot more bass and midrange response.

We’ve included a single microphone option for each guitar (more info on that below).


Our acoustic impulse responses are meant to make the direct output of an acoustic guitar fitted with a pickup system sound more like a mic’d acoustic guitar – in this case, the mic’d McPherson MG 4.0. To do this, we’ve made detailed recordings of the McPherson and then matched direct the output of various different  acoustic guitars to it.

You can use these IR’s with any hardware or software application that accepts WAV IR files. This includes all the HX Line 6 hardware, Fractal, Kemper, Iridium, and countless software apps and plugins.


For the sample pack, we’ve only included one microphone option per guitar pack. They are:

  • Holy Grail: C800
  • Dread-35: SR25
  • TLR 816: M251

The following information applies to our full acoustic IR packs:

To create our acoustic IR packs we use a variety of microphones. Using a Slate VMS ML1 and ML2, we emulate a variety of classic microphones, as well as an Earthworks SR25.

In our full packs, we include the following microphone options:

  • C12 – AKG C12 (emulated with the Slate ML1)
  • C800 – Sony C800 (emulated with the Slate ML2)
  • M251 – Telefunken M251 (emulated with the Slate ML1)
  • M269 – Neumann M269 (emulated with the Slate ML1)
  • U47 – Telefunken U47 (emulated with the Slate ML1)
  • U67 – Neumann U67 (emulated with the Slate ML1)
  • SR25 – Earthworks SR25
  • 57v – Vintage Shure SM57 (emulated with the Slate ML2)
  • M222 – Schoeps M 222 (emulated with the Slate ML2)
  • C414 – AKG C414 (emulated with the Slate ML2)

Each of these mics (and mic emulations) will give you a different flavor. Some are extremely accurate (the Earthworks is legendary for their accurate mics, and the SR25 sounds fantastic), some are warm and vintage (try the Neumann and Telefunken options), and others are clear and bright (the SR25). Try different mic options with your guitar to see what sounds best.


The Sample Pack includes all the acoustic pickup options found in the full packs.

There are many different acoustic pickups options out there, and we have given you multiple options to accommodate a wide range of guitars. Here is what you get:

  • EXP: The “EXP1’ option is for Taylor guitars with Taylor’s Expression System electronics. These were made with a Taylor 414ce fitted with an Expression System 2 pickup system. If you have a Taylor with an ES pickup, these IR’s will be perfectly suited for it. NOTE: The TLR 816 IR’s include a 2nd EXP (Expression System) option. The ‘EXP2’ IR’s in in the TLR 816 pack were made from the direct out of the Taylor 816.
  • SB1: The ‘SB’ options denote pickup microphones that are attached to the bottom of the sound board on an acoustic guitar. These include the mic portion of the LR Baggs Anthem, the K&K Pure Western transducer pickups, etc. For the ‘SB1’ options, we used the full microphone setting of the LR Baggs Anthem pickup installed in Brian’s Martin D-35. These are the darker of the two SB options.
  • SB2: For this setting, we used the full microphone setting of the LR Baggs Anthem pickup installed in the McPherson Camrielle. These are the brighter of the two SB options.
  • SB3 (Blend): These IR’s were made by blending the ‘SB1’ and ‘SB2’ IR’s, achieving a balance between the two – a great starting point for any guitar.
  • Pz1: If your guitar is equipped with an under saddle piezo, try the ‘Pz’ options. Pz1 was created with just the LR Baggs Element piezo mix of the Anthem system in the Martin D-35
  • Pz2: This was created with an Orangewood Brooklyn Live, equipped with a Fishman Flex EQ piezo system
  • Pz3: This option was created with a Takamine FD-360sc from the late ’90’s, equipped with a Takamine AD-1 piezo system. This is a higher-end piezo pickup/preamp.


The IR’s are available in WAV formate in four different sample rates: 44.1 kHz, 48 kHz, 88.2 kHz, and 96 kHz (all at 24 bit) at both 500ms and 200ms. This ensures these IR’s  are compatible with a wide variety of hardware and software options.

If your hardware or application does not require a specific sample rate or length, use the 48k 500ms options.


.WAV IR’s are compatible with a huge range of software and hardware solutions, so there is no way we can really cover every scenario, but here are a few popular ways you can use these IR’s.

  • Line 6 HX Hardware (Helix, Stomp, HX Effects, POD Go, Helix Native):  Use the 48k IR’s. Open HX Edit and drag and drop any of the IR’s into the ‘Impulses’ column. Next, add an IR block to a patch and select the desired IR from the drop-down. You will probably want to turn the level of the IR block up – in our experience we have set it close to 0.
  • Strymon Iridium: Use the 96k options. In the Iridium editor, import the IR’s to an IR slot. Make sure to turn the amp modeling off (unless you’d like to run your acoustic guitar through a Marshall).
  • Mooer Radar: Use the 48k options. Download the Radar Editor and import the desired IR into any slot. We recommend turning the power amp and EQ sections off.
  • Kemper: Use the 48k options. In Rig Manager, drag and drop the desired IR into the cab section. Kemper will automatically convert it to the proper format. Make sure to disable the amp section (just use the cab).
  • Fractal (FM3, Axe-FX III, etc). Use the 48k options. In the Edit software, open up the Cab Manager (Tools -> Manage Cabs). Show the Browser in the Cab Manager and drag and drop the acoustic IR’s into the browser. You may then drag them into a desired location. You can select the IR’s using a cab block or using the ‘IR Player’ block.


Version 1.0 – Initial Release: Nov 22, 2021


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