I'm sure that most are familiar with the LZ (Lao Zhong) brand by now. They have produced several highly regarded iem's, such as the A4 and Big Dipper, but may have just made the biggest price to performance champion in all of the portable audio landscape in the A6. Let's discuss them!! The LZ A6 is a 6 driver tri-brid, with a dynamic driver for the lows, and quad BA's for the mids, and with a piezoelectric driver for the treble. They also have an impedance button, called a loud button, as well as 9 filters to change their sound signature.