Hi all, have just made available some FREE presets for demo to be used with acoustic guitars that use piezo pickups. Please find and try them here; www.greendog.co.uk/af/acousticpacks.php Be glad to hear any feedback (no pun intended) you may have on how these affect your acoustic guitar sound. thanks and enjoy!! demo video: Using an old '90s Washburn acoustic with relatively poor (and occasionally distorted) sound from the in-built piezo bridge pickup. Sound played back through Atomic Amplifire with presets created to tame the "quack" and "harshness" of that sound using custom created IRs. Note, the AMP block of the AA is bypassed.