What Audio Codecs do IQbuds2 MAX support? Follow IQbuds2 MAX supports SBC, AptX and Aptx-LL Audio CODECs. Here is also an interesting article for you about Audio Codes: Understanding Bluetooth Audio Codecs Related articles Is the battery in IQbuds2 MAX replaceable? Does the IQbuds2 MAX audio processing apply compression/limiting? What is the expected operating life of the batteries in IQbuds2 MAX? Can IQbuds2 MAX be adjusted for specific frequencies? When making a phone call with the IQbuds2 MAX, is there a way to reduce the ambient noise for the person on the other end of the call?