Great power bank for supplying 9v power to all my fx pedals. I was very pleased to find it could also power my TC Helicon Voicelive 3 from its 12v 1A power point. The build quality is very good and the LED lights and on/off switch are useful . It comes with 8 standard connectors, 1 reverse polarity connector , a USB A connector , and a USB C port , which covers all my requirements .Only complaint is that the description on Thomann is misleading ; the power bank came with 9 x 60cm ( not 10 as described ) angled barrel connectors, 1 x 20cm ( not 2 as described ) reverse polarity adapter and no 100 cm barrel connector. Also, the printed manual does not give enough information on how to use the unit. Nevertheless , charging to full capacity only took about 3-4 hours and I no longer have that old problem with interference and ground loop noise when using my FX pedals . 👍🙂