In direct comparison test, the T50 clearer highs show but for less bass than the T40. But if you use the knobs for bass and treble, both systems sound absolutely identical. In very close inspection also shows why: The drivers look absolutely identical, apart from a glued in the center tile. The tweeters seem to be identical and have only received a silver lining for decoration. Otherwise, the T50 have received a dedicated on / off switch, whereas the T40 are turned off with the volume up / down control. For the Bluetooth function of the auxiliary input on the front panel is in the T50 ceased and the dust covers of the T40 is available with the T50 also no longer. Even the automatic standby, the T40 advantage: The T50 will switch off after 15 minutes silent and not go back on automatically when re-enter tone signals, as do the T40. But if the T50 have a connection via Bluetooth, you not only play at the same time the signals from BT and the mini-jack input, but the automatic standby is also suppressed.
Overall, both systems deliver from a very round sound, which surprisingly has a lot of bass, given the small drivers in the loudspeakers. But we must, of course, do not expect so powerful bass, how would it provide a subwoofer but just want you perhaps to love its neighbors have not and has deliberately opted for a 2.0 system. Finally, a reference to three shortcomings of the T50: The feet rattle, the three knobs eggs when turning, which is not absolutely appropriate for the high price and the already decried as sleeping sickness standby function can be annoying when coupled a Bluetooth device.