Let me just say this upfront. I love listening to this amp. I also had to check on it mid-session because it was running hot enough to worry me a little. Both of those things are true. That's basically the whole review in one sentence. What is this thing, actually FiiO didn't bother with a clever model name here. They called it, literally, the FiiO CLASS A. No K-number, no cryptic three digits. Just the topology, printed on the front like a dare. It's also not a standalone product as much as...

The R2R Question I'll admit something upfront: the moment a brand slaps "R2R" on a press release, my eyebrow goes up before my ears do. It's gotten to the point where it feels like walking into a coffee shop and being asked if you want regular or artisan coffee. It might genuinely be better. Or it might just be a marketing word stapled onto the same bean to justify charging more for it. That's the audiophile equivalent of "artisanal," a word that's supposed to signal soul and craft but...

Intro The first time I saw the DISC Nano, I laughed. Not a polite laugh. A proper "who approved this" laugh. A CD player where half the disc just hangs out in the open, spinning, like it forgot to get dressed? Then I held one. And honestly? I stopped laughing somewhere around the second album. Fosi Audio is not new to the CD game anymore. Earlier this year the brand did its first CD player, the Merak, which I reviewed and liked, but that one is really a desktop box that needs a wall socket....