AMP DAC for Campfire Audio Polaris 2 IEM

[pavan alaparthi]

Hi guys

I want to buy AMP DAC for my Polaris 2 IEM. Need help as I am unable to decide.

Preferably:
1. Portable
2. One which does not have to be charged.

I use Apple music on android and iPad pro 2018.

Thanks in advance.

Pavan.