Topping DX1 II
Topping has never been particularly shy about squeezing ambitious specifications into inexpensive little boxes, but DX1 II is a much more substantial update than its familiar name might suggest. The original DX1 was deliberately simple - a USB-powered DAC and headphone amplifier built around AKM's AK4493S, with a single USB input, RCA output and 3.5 mm and 6.35 mm headphone sockets. DX1 II keeps the compact desktop format and USB-powered operation, but almost everything around it has changed. There is a new ESS converter, fully balanced analog architecture, considerably more headphone power, optical input and output, 4.4 mm connections, parametric EQ, a display and remote control, plus features aimed specifically at PlayStation 5 and Nintendo Switch users. In other words, what started as an inexpensive way to improve computer audio has evolved into a surprisingly complete little DAC, preamplifier, headphone amplifier and digital signal processor.