Something noisy and windy (a flexwing, a Thruster...) you want a specialist microlight headset / intercom system.
A light aeroplane that somehow managed to get a microlight permit when the CAA wasn't looking (Eurostar, CT...) a standard GA headset is fine.
Either way, check the plugs match! There are several systems in use in various microlights, mostly incompatible with each other or standard GA.
P