Bogner® XTC Mod

Marvel XTC Mod is a PC board with a toggle ON-OFF-ON switch, two metal film 0,6W 1% tolerance resistors and two WIMA MKS-4 polyester capacitors. The mod lets you choose between two separate RC circuits and also lets you switch both of them off. Originally, Bogner Ecstasy didn’t have an extra RC circuit in the cathode of the third gain stage. There was only a 10k resistor marked R12 on the preamp PC board. In 2004 Bogner decided to modify the preamp circuit adding an RC to the 3rd stage cathode. The vast majority of post 2004 XTC’s have an RC of 2k7/1uF piggy-backed to the R12 10k...