In my review to the "JBL On Tour" mini active speaker I have already praised it to the skies. The Mini-Aktivbox variant in the form of "JBL On Tour XT" is again a significant increase in terms of sound pressure (volume) and bass performance is because this first, a higher amplifier power is used, are secondly installed four instead of only two speakers and the "XT" Third, a bass reflex port has. Anyone who is considering a "JBL On Tour" zuzulegen, which should be strictly necessary for the almost identical expensive "on JBL Tour XT" version choose the "Extra" at Power!