Instruct: Classify the given Amazon review as either positive or negative.
Query: Way too much hissing

I just sent these back and ordered the 170s. There is way too much hissing. It is extremely annoying. I tried switching channels a million times, moving the base, etc. Occasionally it would work and I would have great sound for a minute, but then came the hissing. I really hope the 2.4GHz of the 170s does not have this problem.