Cheap chinese headphone amps

So are any of these any good and would it be a big upgrade from the headphone out socket on a lets say Sony CDP-X ... ES player?

I recently started to collect vintage headphones and need a good quality amp, doesnt have to be "high end". I could build one also if you could recommend a kit.

Ended up buying a used Argon HA1 which is the same as Firestone Cute Beyond, only minor differences.

Original psu is 12w or 500mA, will change it for a 2A one. Should be sufficient I guess. Original fuse is 200mA after what I´ve seen on pictures. Might buy one of these chinese amps later on to test how it compare.