I have bought an audio technica 700 UHF wireless system for my bass, and as soon as I plug into it no matter what frequency or what channel I use, I lose about 40 % of my volume. For example I usually play with my master set at 3-4-5 depending on where i play with my band but when I get on my wireless i have to put to 7-8-9 to be heard. So is it me who's not using it right or is it the wireless system that's cheap and if it is cheap any suggestion of a better one?