This is just a riff and not really a music promotion, but not sure where else to post this.
Anyway I have not played with FX too much but just found the EQ Telephone the other day and used it to surprise someone when showing them the KPA. I had the EQ on and played for a bit and acted really impressed with the sound. Once my buddy was adjusted to the sound I took off the EQ and then there was a huge grin on his face as soon as the full tone was released out of the speaker.
Here is a quick demo I did to give you an idea of what it was like. (It is dual tracked for the loud part, more for your enjoyment than for replication of the event)