Conventional amplifiers have serious problems when forced to drive electrostatic loudspeakers. Roger Sanders has developed the first amplifier specifically designed to drive these unusual speakers.

Electrostatic loudspeakers (ES­Ls) are very differ­ent from conventional mag­netic speakers and place unusual and difficult demands on the way amplifiers deliver power to them.  A magnetic speak­er presents a resistive/inductive load to an amplifi­er, while an ESL appears mostly as a capacitor.

Heatsinks start out as solid aluminum 3 1/2 inches thick by 20 feet long. The aluminum block is then extruded to create the fins and it arrives at Sanders factory in 20 foot long extrusions. They are then cut and milled on the CNC milling machine along with all holes drilled and tapped before they head out to local company for bead blasting and then off to be anodized.  We use local small businesses whenever we can.