I purchased these speakers about a year ago. If you'd like to know what your likely useable time is with these speakers feel free to use this example. I'm on Amazon right now buying replacements (ANOTHER BRAND) for these that have completely failed. They worked fine at first, then got fuzzier. One quit completely tonight, no power..nothing. The other still "works" with lots of fuzz. I find myself re-tuning the signal a lot. Time for a replacement. If you intent to use wireless speakers spend some extra bones and get a different brand. I'm trying the Acoustic Research AW-871s now. They supposedly have better range. Don't settle for cheap unless you have to. You'll probably be replacing them in a year if your patience lasts that long! Don't say we didn't warn you!