Δε νομιζω να συμβει κατι τετοιο με ενα passive volume στη λουπα (και δεν υπαρχει και λογος για να συμβει κατι τετοιο,αφου απλα με ενα ποτενσιομετρο χαμηλωνεις ολο το σημα σου πριν τον τελικο)
Αντιγραφω απο το link του soldano που εβαλα παραπανω:
"There are two approaches to solving this problem: Active or Passive. We like the passive approach.
Active electronics, by design, alter your signal path. All too often, this alters your tone, as well. There are other potential issues, as well, such as the signal-to-noise ratio. If your goal is only to raise your volume for a lead solo, a passive solution is likely to be superior. A passive approach takes a backwards approach. Instead of boosting volume for solos, you reduce your volume when you aren’t soloing. No active electronics are involved and your signal is not at all altered—it is simply reduced."