Topping D30 Pro Desktop DAC | FREE Two Day Shipping – Headphones.com
iPhone XS with Topping D30 not working. Connected to usb through the Apple usb to lightning adapter. Is there a setting in the iPhone I need to change? : r/headphones
Topping D30 Multi-Function S/PDIF and USB DAC
Archimago's Musings: MEASUREMENTS & LISTENING: Topping D30 DAC by Greg Dunn. (And briefly, more USB cable nonsense.)
Topping D30 review: a quality hi-res DAC at an affordable price - Soundphile Review