An Apple dongle can drive them pretty well… people say better amps helping things is a meme, but they are so good; Sky is the limit for whatever you like about a pairing with a great amp. They sound awesome on OTL amps with the right tubes. Respond well to SS amps with lots of voltage into high impedance. I have a range of choices; I was jamming out with a dongle recently and it sounded great too.