So I bought this little beast for $22 brand new, unbelievable value when ‘branded’ competitors are in the $150-$200 mark which offer the same power (1300mw @ 32ohm).
For me, I see no reason in upgrading to anything else - it drives everything flawlessly for pocket change. Genuinely surprised more people don’t recommend chi-fi like this. If anyone else has this, it’ll be interesting to get your perspective.
It’s connected directly to my PC 3.5mm output.
Remember that different headphones and IEMs may need a lower noise floor or different power characteristics. It's also worth noting that it's relatively common for amps to perform worse when the current draw increases.
https://www.youtube.com/watch?v=PqlcJnoIcGo
I have not seen exhaustive measurements of this amp, but it seems to be good for many, but not necessarily all, headphones.