Small analog amp to pair with ES100/Q5k?

[wlai]

I love this new generation of bluetooth dac and their apps, and don't want to switch back. But the ES100's built-in amp is not really able to drive some of my less efficient full size headphones. Anyone else has this issue? Does anyone use a good ol' analog portable amp to pair with the ES100?

I have a limited budget ($100-150 but don't mind used) and would prefer something small, ideally not much bigger than a deck of cards. Advice appreciated!

 

[fsi22]

Xcan would be your best small option, Fiio Q3 should be ok at a price closer to your budget. If you can find a Topping NX4, that would be another excellent choice.