I have hiby r5 , r6 pro & Astell SR15 and want to use with Audeze isine 20. I understand that planars can require quite a bit of power to do them justice. In order to get more power what kind of portable power unit can i get that is easy to use and biggest bang for the buck. I know zero about...

Can anyone tell me where i can send a HIBY r6 to get a micro sd card out of the unit.? The tray came out and the card stayed inside the unit and is rattling loose. Clueless as to where to go and might be long wait if i send to China Thanks for the much needed help HT