Looking for a 'cheap' amp and dac for my hd660s

How do you even switch inputs on the Topping D10? I see no buttons on it…
Oh nvm it’s usb only… well then there is that… D30 has more inputs…

If you need more inputs I would suggest the smsl m100 instead of the topping d30

Just looked it up… That’s a very cute little DAC!