Stunning piece of equipment for the price. I needed an isolator to get rid of the loud buzz and hiss caused by my bass overdrive and fuzz pedals. Even while not switched on, they still caused a noticeable hiss which sound engineers would moan about and would annoy me at gigs during quiet parts of songs. I bought another make first, also a rechargeable one but it didn't make ANY difference to the buzzing so I sent it back. I got this and it's finally gone ! Even with both fuzz pedals on while not playing there is only a minute background hum but a million times better than the loud buzz iv had for years.The rechargeable element is an added bonus. The one I sent back was also a 10,000mah powebank and all the reviews I saw said it lasted 8 hours. So far iv had it on for around 3 hours and it's still showing full battery.So no more battling for plug sockets on stage or messing about while practicing at home and no worrying about tripping over plug cables on stage due it's powerbank and best of all no more buzzing and hissing from my pedals. These are essential for gigging musicians