PreSonic

Which PreSonic size fits your guitar?

PreSonic comes in Small, Medium, and (soon) Large. Match the size to the Fishman preamp that originally came in your guitar.

	Small Prefix Pro / Aura Pro-size	Medium Presys / Presys+ cutouts	Large Original Prefix / Prefix Plus-TComing Soon
Replaces	Prefix Pro Prefix Pro Blend Aura Pro and other “Pro”-labeled Prefix variants.	Presys Presys+ Presys Blend and other compact Fishman preamps.	Prefix (original) Prefix Stereo Blender Prefix Premium Blend Prefix Plus-T and any Prefix model without “Pro” in the name.
How to identify	Faceplate says “Prefix Pro” or “Aura Pro”. Smaller, slimmer bezel compared to original Prefix.	Faceplate says “Presys” or “Presys+”. Compact rectangular unit, often with tuner display.	Faceplate says “Prefix” (no “Pro”). Larger, wider control panel with more spaced-out knobs/sliders.
Side cutout	Fits the smaller Prefix Pro/Aura Pro cutout.	Fits the compact Presys cutout.	Will fit the wide-format Prefix cutouts used for original Prefix, Prefix Plus-T, and related models.

Not sure which size you need? Snap a photo of your current preamp and contact us — we’ll confirm it for you.