We're had our PSWi225 for about one month now. No problems, whatsoever. As a matter of fact, we added it "outside" on our large, covered patio. Our exterior speakers simple didn't have sufficient bass to make listening to music enjoyable. We were concerned that the PSWi225 might be too small to make much difference in an outside area that's approximately 650 S.F. covered, surrounded by nothing else but trees, grass, lake, etc. Were we ever wrong! This thing has provided exactly what we were wanting. Makes our small speakers sound like they are twice (maybe triple!) their size. We are VERY pleased with our 225!