This adapter PCB will allow any PTL-45 series LED slider to fit into the footprints of the original CTS 45mm sliders found on the ARP Odyssey, Axxe, Avatar, Omni 1 & 2, Pro Soloist & DGX, Sequencer, Little Brother and mixer section of the ARP Quadra. These adapter PCBs require some SMD soldering (0805 resistors being the smallest parts) . PTL-45 slide potentiometers are not included with the adapter PCBs. LED brightness is adjusted using the on-board brightness trimmer on each slider, allowing for easy mixing of colors on an installation. Each PCB can be mounted vertically (like Odyssey, Axxe, Pro Soloist, Avatar) or horizontally like sliders on the Omni 1 & 2 panels. Each slider can also be configured to blink (at rate of modulation source like LFO, ADSR, etc) or be lit constantly, by populating a 0 ohm resistor. The sliders can be connected horizontally (like the Omni front panel), or vertically (like the Odyssey, Avatar, Axxe, Pro Soloist, Sequencer, etc).