Thank you for viewing. I am selling this as I am replacing my DAC. I have been using it for about a year. 【Sound Quality and Internal Structure】 The EH3 is equipped with ESS's latest generation DAC, the "ES9039PRO," and pursues high-precision sound and realistic sound quality. The 4-way full-balanced design, which combines four OPA1612s and discrete transistors, achieves both high output and stability. The maximum output is 1900mW (32Ω) for single-ended and 5300mW (32Ω) for balanced, which is very powerful, and can easily drive high-impedance headphones. In addition, the unique low-pass filtering technology "CPAF" realizes a sound full of realism. Since this is a used item, please purchase it if you understand. Thank you.