Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sony Disappoints

Our past experience with Sony products has been great, but this receiver is a disappointment. We have integrated the receiver with a DVD/CD player, a Dish Satellite TV receiver, a VCR, and a tape deck. Installation instructions are good, but operational instructions are a problem.1) The manual is written for an audio engineer, not a consumer. The many control settings are barely explained.2) CD sound is biased toward high treble, and Sony recommends an external equalizer as the only answer.3) Technical support is by email only with slow responses and incomplete answers.We will not buy another Sony audio product.