It's a good idea to keep using earplugs and get a system loud enough to be heard through them. This means helmet speakers. I have such a setup, now pretty old, using a Boosteroo (?) amp and wired speakers. Leaving your earplugs in saves your hearing from wind and road noise.
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If you use very high quality earbuds for audio, not only do they seal out a lot of noise, the volume to hear audio from whatever source you have isn't very loud. I use Senheiser earbuds and often just use them to reduce noise in general while riding.
They are amazing but not inexpensive, you get what you pay for. Figure on spending close to $100 or even more but the money spent is worth it.
To avoid a wire going to the source, if handlebar mounted, use a bluetooth dongle, it fits into your jacket pocket and the earbuds plug into that. Now you are wireless.
Really good earbuds will serve you well in other situations too. If you fly often is take public transportation, they will block out most of the noise yet let you hear audio very clearly without cranking up the volume and damaging your hearing.