Hey take a look a this micro usb amp for phones, it works very well with headphones with earbuds it works with earbuds but the sounds distorts becose of the amplification so will need to turn the volume down a bit
https/www.amazon.es/GGMM-Amplificador-Auriculares-Portátil-dispositivos/dp/B01MFCK7WQ/ref=sr_1_2?s=electronics&ie=UTF8&qid=1520852464&sr=1-2&keywords=ggmm+a1&dpID=413mQ33MhwL&preST=_SY300_QL70_&dpSrc=srch
https/www.amazon.es/GGMM-Amplificador-Auriculares-Portátil-dispositivos/dp/B01MFCK7WQ/ref=sr_1_2?s=electronics&ie=UTF8&qid=1520852464&sr=1-2&keywords=ggmm+a1&dpID=413mQ33MhwL&preST=_SY300_QL70_&dpSrc=srch