ARIES, ARIES LE and ARIES MINI are designed for different applications with different prices.
ARIES is the step-up model featuring with two individual FemtoClocks for both USB audio host and digital outputs, low noise internal design to eliminate jitter and AURALiC's Purer‐Power™ based 10uV low noise external linear PSU. It is best for adding to your existing High-End audio system.
ARIES LE is the standard model with low-phase noise crystal and standard external PSU. It offers exactly the same software function with ARIES but at a much affordable price. You also have the option to purchase the Purer‐Power™ PSU coming with ARIES as an upgrade in the future.
ARIES MINI is designed in a much smaller box with most software functions from ARIES and ARIES LE, and with its substantially more affordable price, is intended for the more general user. The main difference between ARIES MINI and its brothers is that ARIES MINI has a built-in DAC with a pair of analog output. It also allows you to install a 2.5' HDD/SSD storage inside the device. With the two features above, you do not need to purchase a separate DSD DAC or an NAS drive.
Both ARIES and ARIES LE, sharing exactly same software structure with same DSP engine, will accommodate future software upgrades such as DSD upsampling and Room Correction functions available in the future. The ARIES MINI, due to hardware limitation, will not be upgradable with those audiophile features.