Singere,
Denafrips products in the US are only sold by Vinshine Audio, and their amazing owner Alvin Chee. He and Vinshine are based in Singapore, and their US repair center is Tech Specialists in Buda, Texas. All Denafrips products sold by Vinshine include a fully transferrable 3 year warranty
Alvin is quick to answer a question (except night in Singapore), offers what I have found to be honest advice. A good part of why have four Denafrips products (Pontus II DAC, Hades Pre-Amp, Thallo Amp, and Iris DDC. All of the products that I own punch way above their price, and I am extremely happy.