You can get custom earplugs with little speakers in them, if you have the $$. If that's out of your budget I think isolated headphones are easiest.I am wondering what is better: isolated EX29 headphones or custom earplugs with a non-isolated headphone. I often play along music.
I have a hearing problem on the right side, but this is not drumming related. My left ear has a very low hearing threshold, like an ideal ear would have. My right ear's hearing threshold is about 28-30dB higher over most frequencies. This is due to a Cholesteatoma that formed when I was 7 or 8. Long story short, I have a donor eardrum and a long straight connection where the three ossicles once were.