The Topping DX3 Pro+ is an advanced digital-to-analog converter (DAC) and headphone amplifier, an upgrade from the original DX3 Pro. It features a Qualcomm QCC5152 Bluetooth chip that supports Bluetooth 5.0 and LDAC high-resolution audio streaming. The DAC utilizes the ESS ES9038Q2M chip for superior audio decoding, offering 60% lower total harmonic distortion plus noise (THD+N) compared to its predecessor. With an output power of 1800mW at 32Ω, it ensures robust performance capable of driving a variety of headphones. The device includes a low-noise NFCA circuit and is equipped with multiple gain settings to accommodate different headphone impedances. Users can select from four output modes: headphone amp, headphone amp + DAC, DAC only, and as a preamplifier, making it versatile for different audio setups. Its compact design measures 6.5” x 4.7” x 1.5” and comes with a remote control, USB cable, and a power adapter.