AE 100i is a very good small speaker, using a polypropylene woofer and a soft dome tweeter. AE 100i is an improved model of AE 100, including improved crossover component grade, using audiophile OCC crystal copper wire, etc. The transparency is increased, the high frequency is more neutral, the low frequency is more powerful, the transition between the low frequency and the mid frequency is smoother, and the sensitivity is increased and easier to drive.