Archimago's Musings: MEASUREMENTS: Topping DX3 PRO V2 (LDAC version) - plus frequency/amplitude stepped sine measurements, a quick look at the 8kHz USB PHY packet noise, and AirPods Pro "Spatial Audio" coming...
Topping DX3 Pro+ Review - Headfonia Reviews
TOPPING DX3PRO+ - Desktop DAC and Headphone Amplifier 32bit