I have yammy 650 amplifier and have one question relating to volume. Can anyone tell me what sort of volume they are using. I seem to use mine on approximately -15db to about -10db. I have heard comments that people are using them at around the -25db mark and that the sound is load at that level. Mine is very quiet at that level though. I confirm that i am using it with Tannoy 5.1 fx speakers.