Price performance are good. Frequency range 40 Hz to 12 kHz, THD 0.5%, 6Watt average power (RMS) are ok to listen to some music or to direct the TV sound in another room or on the balcony. Bass (depths are ok for this 7cm bass speakers. The heights so fall at 12kHz from, as well as given (presumably 3dB half-power at 12kHz and above continue falling). For normal piped music in the background (waiting room, kitchen, balcony, dining room , ...). If you expect the best, truer, concert playing classical music, which is, however, with these boxes less happy. The reception 100m on view may be true, these routes I can not try. If a Betonwandund with steel reinforcement, 2 brick walls and a distance of about 9m between transmitter and speakers are located, it is just the reception. Here it must be tried by position change of speaker and transmitting antenna ensure a noise-free or low-noise reception.