Low output impedance is not always the best thing especially for high impedance headphones, here a thread where there is a list of many shops in the eu
The 880 are not the easiest headphones to drive but the emotiva is pretty exaggerated as power.
The liquid spark is available in Europe
The aune x1s if you need a DAC as well is a valid option
The aune x7s if you want to use the balance out in the future is also a good choice
The ifi zen can (not the DAC) is also a good option and as the the x7s is balanced as well
If you want there are also more “premium” options like the lake people g109 g111 Lehman Rhinelander and linear sometimes you can find them used for a good price and they drive them pretty well.