When speeds are up to 80 mph, it gets a little hard to understand but with loud pipes I am very satisfied.

and I ride a Harley with loud pipes!

Honda VTX1800 with fairly loud pipes

The transmissions were clear even at highway speeds and loud pipes

We have a Harley Ultra Classic with loud pipes and have no trouble hearing at all.

Riding on a Harley with Loud pipes, the conversation and cell phone was crystal clear

I ride Vulcan 900 LT with cobra pipes (very loud)

The variable volume is more than adequate to hear while riding on the bike and my pipes are not quiet.