Instruct: Classify Amazon reviews into positive or negative sentiment
Query: worst purchase from Amazon till date..though not Amazon's fault

After reading and spendign a week researching i ordered the z2300 from amazon for 130. The item was promptly delivered within 2 days. I carried the heavy box to my place and placed it in the center of my small apartment room with several friends and family overlooking. I was so excited to show off my new purchase as i had made such hype for it. Setup was very very simple, but imagine my surprise when i unhooked my existing 2.1 speakers and hooked on this one. The sound was worse than my existing one. Cranking up the volume to almost full began to show signs of sound and the sub started to show signs of working when it was 100%. I think it is defective..full bass and 40% volume just barely gives some bass. Exact same setup gives too much sound with my older cheap 2.1 speakers. This has to go back. 200w heavy bass system...i think not. Or maybe its just unlucky me.