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I was trying to use my TDK A33 today with my 2014 MacbookPro and the sound was being muffled. My computer was connecting to the bluetooth, but the telephone button was turning on and connecting at the same time and the sound was getting really distorted. I tried repairing with bluetooth and not the telephone, resetting the TDK bluetooth options, and tried restarting my MacbookPro, but nothing has worked so far. When I connect to other devices both my MacbookPro and TDK A33 work fine however. Please help.

Did you try resetting the speaker? While the connection to the phone was severed the speaker may still think its active. I would check the volume levels within both the Mac & speaker. Try lowering the Mac’s volume to about 1/3 as well as the speakers.