Very fast delivery (1 day in advance!), Thank you! Powerful speakers (right speaker: 2 separate controls (volume and tone), LED, headphone jack - left speaker: off / on button on the rear), visible at the rear of each speaker: built low port (" giving a deeper sound with enhanced bass "... and it's true!) Moreover, they are attractive and their base is very stable, great! Excellent price / quality ratio. Perfectly matches my expectations !! :))