I won a pair of Bose 251 outdoor speakers and I'm looking to hang them on an eve of my roof above my patio. I am going to experiment with driving them with an Echo Dot. The Echo uses a 3.5MM output cable to hook up to external speakers. What would be an adequate amp to drive the pair of speakers. Ideally: 1. Not more than $150 2. Doesn't suck juice while I am not using the speakers which would be 99% of the time. 3. Could handle the heat in the summer and cold in the winter being stored inside the soffit of the roof. Is this just a dumb idea and should I sell the 251's for a better solution? They'd sell for $300+ on ebay.