Electric Bass Preamp BARTOLINI XTCT+MCT3MC Used as an outboard preamp, wired in an effects case. The control section is pre-wired. You can use it by connecting the input, output, and battery sections. For wiring changes, please refer to the wiring diagram on the Moridaira Musical Instruments website, which is based on the official Bartolini diagram. Treble and bass are boost only. Mid is boost/cut, and the mid frequency can be switched with a mini-switch. Currently, if you buy it new, the main unit only (excluding pots) costs approximately 18,000 yen (Onyaka price). Electric bass preamp Bartolini XTCT TCT bartolini Atelier Z ATELIER Z kenken Marcus Miller bass Aguilar