Been using this for 2 years. Sound and durability are top notch. Having the 2 channels is plus. Great for anyone using 2 instruments. The biggest con is the lack of a rechargeable battery for the transmitter. You go through a lot of batteries with this. I thought by now AT would have come out with a rechargeable battery pack that would not only extend the life of the transmitter but also reduce the need to have batteries handy. If you happen to run out at a show and can't get more, you are screwed. Lithiums work great but there is no indicator the power is going down. It just stops working. Regular alkaline gives you a meter, but shorter life. With newer options coming out, this lack of a chargeable battery will make these obsolete. Not having a 9v option on the receiver might be a big deal in some cases. The range on this is long enough where the receiver will be near your amp and a power supply and you won't miss a beat.