Two rocker switches labelled CHANNEL and BYPASS are mounted on the front part of the case. To their right is the plug for the 12-volt power supply (included) which can be locked in place by its bayonet plug. Next to them, two 1/4” / 6.3mm jacks for INPUT and OUTPUT are fitted. for sound optimization) just by loosening a single screw. The two 12AX7 preamp tubes (ECC83 – comparison type), mounted in a separate casing with air vents on the left rear of the case, stand out. The control panel is provided with numerous rotary potentiometers in vintage style (6 pots in total), as well as a number of LEDs and chromed mini toggle switches for the unit’s various functions. It is a new tube preamplifier or tube distortion pre-stage which is available in both hand- and foot-switched versions, and can thus be used as either a foot-controlled effect or as a desktop device set on the instrument or amplifier in question. The ORGAN DRIVE from the Tube Amp Manufactur company in Berlin comes in an elegant, compact brushed stainless steel case, which is robustly built with a vintage look. We’ve looked into the inner workings of the Organ Drive. The Organ Drive from Berlin is a fascinating device devoted to exactly this. If a more “rocking” sound is desired, of course some proper distortion is required to give the sound the right “drive.” “Drive“ being the key word. This is also true for a convincing Hammond sound. It’s often the apparently small details that make for a truly authentic sound.