Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Didn't Work Out of the Box

Hooked up the speakers and plugged it in. Standby lite came on. Turned the power on, unit played for 15-20 seconds then reverted to standby. Disconnected speakers, same thing happened. Called Sherwood(it was not easy to reach them). Was told I should be using 16 ohm speakers. Nothing about that in the specs. Two service repair centers listed on their website. Called both, neither knew anything about Sherwood. Returning it to Amazon in exchange for another brand.