I just purchased the acoustic tube and am satisfied overall. However, I am getting a weak signal. I tried running it through a direct box, and that helped, but still have the problem. I run it through a Korg stompbox tuner, Boss Compression/Sustainer, danelectro Danecho, and Boss loop station. Without all of these and just going straig to my crate acoustic amp, there is not much difference. Any Suggestions?