Based on the Alembic filter tone control. This puppy is hours old. Volume-Volume-Filter Sweep (tone) There’s magic in this preamp! mounted on black plate w black knobs and an active/passive switch. solder less connections. Works in both 9v or 18v. Reactions: NigelD
Papazita Jun 27, 2008 1,917 2,346 Ohio Oct 1, 2021 How easily could that be removed from the plate? Is there any tone control in passive?