Inputting a mic will need a mic preamp - which one is best cheapest and portable?

Hi guys, my first comment on the forum, I hope I’m following the rules…

This topic is exactly what I’ve been looking for! For my pedalboard anything powered by 12v is out of the question - it has to be 9V or or 5V USB powered so I can take it all outdoors (powered by mission engineering 529i). And it has to be as small as possible…

Right now I can’t make a decision between the Yamaha AG06 or the Eventide Mixing Link. I’d like the ability to loop vocals for choruses etc, but most other times time I don’t want the Aeros to pick up the singing while I record instrument loops. With the AG06 I could plug in 2 mics (use one for looping / one for singing), but I’m intrigued about using the Mixing Link to switch the same mic in and out of Aeros. Does anyone know if that would work?