-
Why do you want to amp up the electro-acoustic at home? Is it a case of just wanting to play along and both sounds spraying out towards your ears rather than putting your phone in a stereo set up and setting it to a volume where you can just play the guitar acoustically?
As I understand it, the purpose of electro-acoustic is the ability to put the thing through a PA without having to sit still in front of a mic
Positive Grid Spark, a mate has one and says it's fantastic fun as a play along tool! They're very good value, quite aesthetically pleasing and come with some great software too!