Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Poor performance and worse customer service.

Navigating through AIWA's customer service is almost as bad as dealing with the IRS. It makes their warranty practically worthless.In my experience, the AIWA products I've owned (one shelf system, and one portable tape player) have functionally lasted about a year or less. Save yourself some money (and more importantly the headache of dealing with their customer service) and buy a Sony or a Pioneer (anything else).