I found the amps powerful enough to drive many good bookshelf speakers and most surround speakers to satisfying levels. Just remember that 25 watts is not a huge amount of power and set expectations accordingly. KEF claims the system has a range of 25 meters (82 feet), which is probably accurate if you maintain an unblocked path between the transmitter and receivers. For in-home use 30–35 feet seems more realistic given that walls and other obstructions (including people) reduce the effective range of the transmitter. The KEF system showed no problems at all with interference sources such as microwave ovens and cordless phones.
KEF’s Universal Wireless System provides fine sound quality and a simple, flexible, and effective way to spread music around your home or to set up no-fuss wireless rear speakers. Wireless sound used to be a pipe dream, but thanks to this affordable
KEF system, it’s now a reality. TPV