This is my solution, finally ,to protect my hearing after 30 years of Tiger Moth and Bucker Jungmann flying.
I found a F 16 helmet,custom   silicon In EAR Plugs with CEP speakers ( or foam earplugs ) and an option for a microphone mask the best way to communicate,as well as being a head protection .The helmet alone still gave resonance from the airflow around my head ( propeller generated )

I use a Becker radio,AR 6201

Possibly this is of use to friends in the Bucker and open cockpit community.

Miklos Schermer Voest

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